MT4自定义周期实时更新程序 MT4自定义周期实时更新程序 已经更新成1.3版本 最后一次代码更新在第5页的87楼 一. 功能 这个是MT4自带的period_converter的重写改进版, 自带的period_converter 不少人都用过, 不支持真正的实时刷新, 单个转换脚本就占用大量的CPU(50%-9x%) 导致整个系统变慢. 退出MT4下次重新进来还得重新对各窗口应用脚本才能再次 更新，麻烦至极. 这个改进版解决了上面的所有问题: 1. 支持实时刷新或者自定义到毫秒级的刷新周期. 2. 很低的CPU占用, 平均为5%-10%或者更低. 3. 以指标模式工作，退出MT4再重新启动也不会有任何问题，一切恢复到退出 之前的设置. 4. 没有每个窗口只能应用一个脚本的限制，用不同参数可以从同一窗口生成 多个不同的输出结果到多个窗口. 二. 使用方法 和其他的MT4指标安装类似，复制到experts\indicators即可完成安装. 注意必须安装为自定义指标而不是脚本. 然后类似其他指标那样操作, 添加到你想转化的窗口即可. 参数设置: PeriodMultiplier: 新的周期对于原周期的倍数。 UpdateInterval: 刷新间隔, 毫秒为单位, 0表示实时刷新 默认为实时刷新. Enabled: 是否启用刷新. 注意必须将允许动态库调用选项允许，否则将无法正常工作. 之后通过文件->打开离线历史数据打开刚生成的图表即可. 然后将会 自动进行实时刷新. 只要你一直保持数据源窗口以及该程序运行，则生成的离线图表也会 一直保持为最新状态，包括其中的指标等等. 关闭该离线窗口后, 你 也可以再重新通过文件->打开离线历史数据打开. 如果需要退出或者重新启动MT4, 可以和往常一样正常退出，离线图表 以及设置会同样保存并且下次重新启动后加载恢复到上次同样设置. 三. 注意事项 1. 注意"不"要将离线窗口属性中的"离线窗口"的勾去掉，否则退出 MT4再重新启动该窗口将被当成实时数据而导致无法获得数据. 这种情况下将需要重新关闭离线窗口后重新打开. 2. 你可以在同一个数据源窗口中加载多个不同倍数设置的转换程序, 从而获得多个数据输出, 比如对M1使用PeriodMultiplier = 2, 4, 10 将同时获得M2, M4, M10. 甚至可以使用M1数据来获得小时图. 但一般因为服务器上不会有太多的短周期数据，所以这样讲导致 生成的数据时间跨度不大, 所以推荐用接近的数据周期来获得需要 的周期.比如用H1来获得H2. 3. 实时刷新时候将尽可能快地进行数据刷新, 即对每一次数据变动, 但如果同时有大量数据进入时可能会错过部分数据, 但这种情况 一般不会出现而且你至少可以获得每秒十次以上的刷新率, 这已经 完全足够用了. 4. 离线图表窗口没有那条买入价线显示，但数据实际上还是被刷新的, 如果该城非离线窗口则必须退出前改回来, 否则下次启动就会得不到 数据. 一般就没有必要去弄这个麻烦. 5. 如果你在源数据窗口中往前拉到了新的历史数据, 生成的数据窗口里面 是不会自动更新这些数据的, 需要ctrl+I显示指标列表后选择对应的 指标然后双击弹出设置窗口后确认即可. 另外附一个用这个改进的版本后开了M1->M3, M10, 以及H1->H2的转换时候 的CPU使用率图. 如需转载请保留原始版权信息, 谢谢. 更新到1.3版本，解决了当重新启动后新加载的数据过多时候可能出现的数据丢失情况, 并且现在支持源数据窗口中新增加了开头的历史数据时候的自动更新. 不过因为现在是周末服务器没有数据刷新没有进行完整测试, 请大家帮忙测试. //+------------------------------------------------------------------+ //| Period_Converter_Opt.mq4| //| Copyright ?2005, MetaQuotes Software Corp. | //| http://www.metaquotes.net | //| Modified by wfy05@talkforex based on Period_Converter| //| http://www.talkforex.com | //+------------------------------------------------------------------+ #property copyright "wfy05@talkforex.com" #property link "http://www.talkforex.com" #property indicator_chart_window #property show_inputs #include <WinUser32.mqh> /* Readme: I. Features: This is an improved version of period converter for MT4 based on the MT4's default period converter by metaquotes. The default period converter script do not support real-time refreshing, and consume lots of CPU (50%-9x%) making the whole system slow. Also, the default one is a script which do not save when you exit MT4, so you have to apply every converter script again after restarting, quite annoying. This one fixed all above problems: 1. Real-time updating or custom interval millisecond level updating. 2. Low CPU cost, average 5%-10% or less. 3. Works as an indicator, so can be saved and reloaded during restart. 4. There is no one converter per chart limitation as it is not script any more, you can only use one window as source to generate as many new timeframe chart as possible. 5. Auto updating if there is new history block loaded. II. How to use: Copy the mq4 file to your MT4 indicators folder (experts\indicators) to install it as an indicator, NOT script. then in the custom indicator list, attach period_converter_opt to the chart you want. It support 4 parameters: PeriodMultiplier: new period multiplier factor, default is 2 UpdateInterval: update interval in milliseconds, zero means update real-time. default is zero. Enabled: You can disable it without remove it with this option. Other parameters are comments or for debugging, it is safe to ignore them. Also Make sure you have Allow Dll imports option checked in common tab or it won't work After that, File->Open Offline to open the generated offline data. then the offline data will be updated automatically. As long as you keep the source chart open and the converter indicator running, the generated chart including indicators inside will always be updated. also you can close the generated chart and open again later from File->Open Offline without problem. If you want to quit MT4, you can leave those offline chart as other normal online charts. when you start MT4 next time, those charts will also be loaded and updated. III. Notes: 1. Do NOT uncheck the "offline chart" option in offline chart common properties. or after MT4 restart, it will treat that chart as online chart and request the data from server, resulting empty chart window. 2. You can attach more than one converter to same window with different PeriodMultiplier, e.g: you can attach 3 converter with PeriodMultiplier = 2, 4, 10 to M1 to generate M2, M4, M10 at the same time. It is even ok to use the M1 chart to generate Hourly chart like H2, which only cost a few more CPU resource during initial conversion. but usually most server don't have much data for those short period. resulting the generated data isn't long enough for long period. so it is suggested to use Hourly/Daily charts as source when needed. 3. The real-time updating mode updates quotes as fast as possible, but as this is done via script, and MT will skip calling start() function when your PC is busy and lots of quotes income. anyway, this seldom happen, and you can at least get 10 updates each seconds which is much more than enough. 4. The offline chart don't have a bid line showing in chart, but all data in the chart including the indicators is still being updated, so don't worry. you can show the bid line by unclick the "offline chart" option in chart properties. but which don't helps much and if you forget to check "offline chart" option before exit. it will cause errors and become empty on next startup. you have to close the window and open again from File->Open offline, which don't worth the trouble. IV. History: 2005.12.04 1.3 Fixed missing data when there is large amount of data loaded in several blocks, and support auto updating when new history is loaded. 2005.11.29 1.2 Additional fix for missing data and server changing. 2005.11.29 1.1 Fixed missing partial data after restart. Reinitialize after changing server or data corrupted. 2005.11.28 1.0 Initial release */ extern double Version = 1.3; // code version extern string BuildInfo = "2005.12.04 by wfy05@talkforex.com"; extern int PeriodMultiplier = 2; // new period multiplier factor extern int UpdateInterval = 0; // update interval in milliseconds, zero means update real-time. extern bool Enabled = true; extern bool Debug = false; int FileHandle = -1; int NewPeriod = 0; #define CHART_CMD_UPDATE_DATA 33324 void DebugMsg(string msg) { if (Debug) Alert(msg); } int init() { NewPeriod = Period() * PeriodMultiplier; if (OpenHistoryFile() < 0) return (-1); WriteHistoryHeader(); WriteHistoryFile(Bars-1, true); UpdateChartWindow(); return (0); } void deinit() { //Close file handle if(FileHandle >= 0) { FileClose(FileHandle); FileHandle = -1; } } int OpenHistoryFile() { FileHandle = FileOpenHistory(Symbol()+NewPeriod+".hst", FILE_BIN|FILE_WRITE); if(FileHandle < 0) return(-1); return (0); } int WriteHistoryHeader() { string c_copyright; int i_digits = Digits; int i_unused[13] = {0}; int version = 400; if (FileHandle < 0) return (-1); c_copyright = "(C)opyright 2003, MetaQuotes Software Corp."; FileWriteInteger(FileHandle, version, LONG_VALUE); FileWriteString(FileHandle, c_copyright, 64); FileWriteString(FileHandle, Symbol(), 12); FileWriteInteger(FileHandle, NewPeriod, LONG_VALUE); FileWriteInteger(FileHandle, i_digits, LONG_VALUE); FileWriteInteger(FileHandle, 0, LONG_VALUE); //timesign FileWriteInteger(FileHandle, 0, LONG_VALUE); //last_sync FileWriteArray(FileHandle, i_unused, 0, ArraySize(i_unused)); return (0); } int WriteHistoryFile(int start_pos, bool init = false) { static int last_fpos, i_time; static double d_open, d_low, d_high, d_close, d_volume; int i, ps; if (FileHandle < 0) return (-1); // normalize open time ps = NewPeriod * 60; i_time = Time[start_pos]/ps; i_time *= ps; if (init) { //first time, init data d_open = Open[start_pos]; d_low = Low[start_pos]; d_high = High[start_pos]; d_close = Close[start_pos]; d_volume = Volume[start_pos]; i = start_pos - 1; } else { i = start_pos; FileSeek(FileHandle,last_fpos,SEEK_SET); } if (i < 0) return (-1); int cnt = 0; int LastBarTime; //processing bars while (i >= 0) { LastBarTime = Time; //a new bar if (LastBarTime >= i_time+ps) { //write the bar data FileWriteInteger(FileHandle, i_time, LONG_VALUE); FileWriteDouble(FileHandle, d_open, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_low, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_high, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_close, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_volume, DOUBLE_VALUE); cnt++; i_time = LastBarTime/ps; i_time *= ps; d_open = Open; d_low = Low; d_high = High; d_close = Close; d_volume = Volume; } else { //no new bar d_volume += Volume; if (Low<d_low) d_low = Low; if (High>d_high) d_high = High; d_close = Close; } i--; } //record last_fpos before writing last bar. last_fpos = FileTell(FileHandle); //write last bar's data FileWriteInteger(FileHandle, i_time, LONG_VALUE); FileWriteDouble(FileHandle, d_open, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_low, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_high, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_close, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_volume, DOUBLE_VALUE); cnt++; d_volume -= Volume[0]; //flush the data writen FileFlush(FileHandle); return (cnt); } int UpdateChartWindow() { static int hwnd = 0; if(hwnd == 0) { //trying to detect the chart window for updating hwnd = WindowHandle(Symbol(), NewPeriod); } if(hwnd!= 0) { if (IsDllsAllowed() == false) { //DLL calls must be allowed DebugMsg("Dll calls must be allowed"); return (-1); } if (PostMessageA(hwnd,WM_COMMAND,CHART_CMD_UPDATE_DATA,0) == 0) { //PostMessage failed, chart window closed hwnd = 0; } else { //PostMessage succeed return (0); } } //window not found or PostMessage failed return (-1); } /* int PerfCheck(bool Start) { static int StartTime = 0; static int Index = 0; if (Start) { StartTime = GetTickCount(); Index = 0; return (StartTime); } Index++; int diff = GetTickCount() - StartTime; Alert("Time used [" + Index + "]: " + diff); StartTime = GetTickCount(); return (diff); } */ static int LastStartTime = 0; static int LastEndTime = 0; static int LastBarCount = 0; int reinit() { deinit(); init(); LastStartTime = Time[Bars-1]; LastEndTime = Time[0]; LastBarCount = Bars; } bool IsDataChanged() { static int LastBars = 0, LastTime = 0, LastVolume = 0; static double LastOpen = 0, LastClose = 0, LastHigh = 0, LastLow = 0; if (LastVolume != Volume[0] || LastBars != Bars || LastTime != Time[0]|| LastClose != Close[0] || LastHigh != High[0] || LastLow != Low[0] || LastOpen != Open[0]) { LastBars = Bars; LastVolume = Volume[0]; LastTime = Time[0]; LastClose = Close[0]; LastHigh = High[0]; LastLow = Low[0]; LastOpen = Open[0]; return (true); } return (false); } int CheckNewData() { static string LastServer = ""; if (Bars < 2) { //the data is not loaded yet. DebugMsg("Data not loaded, only " + Bars + " Bars"); return (-1); } string serv = ServerAddress(); if (serv == "") { //no server yet DebugMsg("No server connected"); return (-1); } //server changed? check this and reinit to prevent wrong data while changing server. if (LastServer != serv) { DebugMsg("Server changed from " + LastServer + " to " + serv); LastServer = serv; reinit(); return (-1); } if (!IsDataChanged()) { //return if no data changed to save resource //DebugMsg("No data changed"); return (-1); } if (Time[Bars-1] != LastStartTime) { DebugMsg("Start time changed, new history loaded or server changed"); reinit(); return (-1); } int i, cnt; //try to find LastEndTime bar, which should be Time[0] or Time[1] usually, //so the operation is fast for (i = 0; i < Bars; i++) { if (Time <= LastEndTime) { break; } } if (i >= Bars || Time != LastEndTime) { DebugMsg("End time " + TimeToStr(LastEndTime) + " not found"); reinit(); return (-1); } cnt = Bars - i; if (cnt != LastBarCount) { DebugMsg("Data loaded, cnt is " + cnt + " LastBarCount is " + LastBarCount); reinit(); return (-1); } //no new data loaded, return with LastEndTime position. LastBarCount = Bars; LastEndTime = Time[0]; return (i); } //+------------------------------------------------------------------+ //| program start function | //+------------------------------------------------------------------+ int start() { static int last_time = 0; if (!Enabled) return (0); //always update or update only after certain interval if (UpdateInterval != 0) { int cur_time; cur_time = GetTickCount(); if (MathAbs(cur_time - last_time) < UpdateInterval) { return (0); } last_time = cur_time; } //if (Debug) PerfCheck(true); int n = CheckNewData(); //if (Debug) PerfCheck(false); if (n < 0) return (0); //update history file with new data WriteHistoryFile(n); //refresh chart window UpdateChartWindow(); //if (Debug) PerfCheck(false); return(0); } 说一下添加方法： 1.终端打开----自定义指标右键----点击创建(稍候)----出现MetaEditor背景,Expert Advisor Wizard 对话框. 2.Expart Advisor Wizard对话框点击下一步,在Name键入名字,比如zhouqi----点击下一步.点击完成. 3.删除左上部编辑器里的所有内容,把搂主的东东复制到上面----点击按钮Compile----关闭MetaEditor ------关闭MT4,重新打开. 4.点击你要定义的货币对(使其成为活动窗口),比如GBP/JPY周图----插入技术指标自定义你键入的名字,比如zhouqi ,出现对话框,允许导入动态连接库前的小勾点上,参数设定根据自己的需要,默认的是2.按确定键. 5.打开:文件----打开离线历史数据找到GBP/JPY 2W图表,形成一张独立的以2周为一条柱线的表格,自己添加技术曲线.OK
http://www.forexfactory.com/showthread.php?t=206301 这个是最新版本 v1.8 可惜我在自定义周期图表中加载ea时，不能运行ea里的start函数，start里的printf没有反应！ 请教大家指点下！ 谢谢！
// Quickstart Instructions: // Copy this file to to your MT4 indicators folder: // On XP, usually: C:\Program Files\__your_MT4_broker__\experts\indicators\ // // Read the extensive notes and directions below. // Review the "extern" variable settings further below. Change as desired. // Restart MT4 or do "Compile" in MetaEditor. // Open a source chart and add this indicator with desired settings. // Then File -> Open offline -> (choose the specified chart from the list; click "Open") 你给的地址，下载的不是EA，而是一个指标文件，将它复制到experts\indicators\下面，编译一下，然后在某一个时间框架中插入该指标，设置好相关的参数后，就会自动生成相对应的offline图了，这时候，再Open offline 即可,这个offline图由指标生成，可以在上面运行EA，汇价会自动更新的。
我也在试验offline图表中运行EA的经验，如果上面我所说的步骤都是对的，那么唯一可能的是，你插入指标时，没有ALLOW DLL IMPORTS，看看指标的选项，开启后，才能将OFFLINE图模拟成为liveUpdate的图，指标需要调用外部DLL去执行，这样汇价才能更新，才能运行EA。
我也试过你所说的指标，的确不能运行EA，大概看了一下指标代码 我发一个能运行EA的，你修改一下，这方面了解不多，估计UpdateChartWindow的问题 这段代码默认的timeframe=2，是2分钟图，如果是其他时间框架，需要更改. Code: #import "user32.dll" int RegisterWindowMessageA(string lpString); #import extern bool ShowWicks = true; extern bool EmulateOnLineChart = true; extern bool StrangeSymbolName = false; extern int TimeFrame = 2; //+------------------------------------------------------------------+ int HstHandle = -1, LastFPos = 0, MT4InternalMsg = 0; string SymbolName; void UpdateChartWindow() { static int hwnd = 0; if(hwnd == 0) { hwnd = WindowHandle(SymbolName, TimeFrame); if(hwnd != 0) Print("Chart window detected"); } if(EmulateOnLineChart && MT4InternalMsg == 0) MT4InternalMsg = RegisterWindowMessageA("MetaTrader4_Internal_Message"); if(hwnd != 0) if(PostMessageA(hwnd, WM_COMMAND, 0x822c, 0) == 0) hwnd = 0; if(hwnd != 0 && MT4InternalMsg != 0) PostMessageA(hwnd, MT4InternalMsg, 2, 1); return; }
指导就谈不上了，自己懂的就这么多，再深入我也没研究了，EA也是网上找的，没有深研究。这样吧，我叫整个EA文件传上来，你再研究一下 这个EA用法是，附加在某个货币的m1图上，会生成固定点数的BAR的OFFLINE图，如10点为一个BAR,全部采用默认的参数的话，还要开启allow dll imports，这样附加好EA后，就可以去OPEN OFFLINE了，打开OFFLINE图后，就可以在这个图上附加EA进行操作了，如果不明，再联系。 Code: //+---------------------------------------------------------------------------+ //| EA VERSION //| RenkoLiveChart_v3.2.mq4 //| Inspired from Renko script by "e4" (renko_live_scr.mq4) //| Copyleft 2009 LastViking //| //| Aug 12 2009 (LV): //| - Wanted volume in my Renko chart so I wrote my own script //| //| Aug 20-21 2009 (LV) (v1.1 - v1.3): //| - First attempt at live Renko brick formation (bugs O bugs...) //| - Fixed problem with strange symbol names at some 5 digit //| brokers (credit to Tigertron) //| //| Aug 24 2009 (LV) (v1.4): //| - Handle High / Low in history in a reasonable way (prev. //| used Close) //| //| Aug 26 2009 (Lou G) (v1.5/v1.6): //| - Finaly fixing the "late appearance" (live Renko brick //| formation) bug //| //| Aug 31 2009 (LV) (v2.0): //| - Not a script anylonger, but run as indicator //| - Naroved down the MT4 bug that used to cause the "late appearance bug" //| a little closer (has to do with High / Low gaps) //| - Removed the while ... sleep() loop. Renko chart is now tick //| driven: -MUSH nicer to system resources this way //| //| Sep 03 2009 (LV) (v2.1): //| - Fixed so that Time[] holds the open time of the renko //| bricks (prev. used time of close) //| //| Sep 16 2009 (Lou G) (v3.0): //| - Optional wicks added //| - Conversion back to EA //| - Auto adjust for 5 and 6 dec brokers added //| enter RenkoBoxSize as "actual" size e.g. "10" for 10 pips //| - Compensation for "zero compare" problem added //| //| Okt 05 2009 (LV) (v3.1): //| - Fixed a bug related to BoxOffset //| - Auto adjust for 3 and 4 dec JPY pairs //| - Removed init() function //| - Changed back to old style Renko brick formation //| //| Okt 13 2009 (LV) (v3.2): //| - Added "EmulateOnLineChart" option (credit to Skipperxit/Mimmo) //| //+---------------------------------------------------------------------------+ #property copyright "" //+------------------------------------------------------------------+ #include <WinUser32.mqh> #include <stdlib.mqh> //+------------------------------------------------------------------+ #import "user32.dll" int RegisterWindowMessageA(string lpString); #import //+------------------------------------------------------------------+ extern int RenkoBoxSize = 10; extern int RenkoBoxOffset = 0; extern int RenkoTimeFrame = 2; // What time frame to use for the offline renko chart extern bool ShowWicks = true; extern bool EmulateOnLineChart = true; extern bool StrangeSymbolName = false; //+------------------------------------------------------------------+ int HstHandle = -1, LastFPos = 0, MT4InternalMsg = 0; string SymbolName; //+------------------------------------------------------------------+ void UpdateChartWindow() { static int hwnd = 0; if(hwnd == 0) { hwnd = WindowHandle(SymbolName, RenkoTimeFrame); if(hwnd != 0) Print("Chart window detected"); } if(EmulateOnLineChart && MT4InternalMsg == 0) MT4InternalMsg = RegisterWindowMessageA("MetaTrader4_Internal_Message"); if(hwnd != 0) if(PostMessageA(hwnd, WM_COMMAND, 0x822c, 0) == 0) hwnd = 0; if(hwnd != 0 && MT4InternalMsg != 0) PostMessageA(hwnd, MT4InternalMsg, 2, 1); return; } //+------------------------------------------------------------------+ int start() { static double BoxPoints, UpWick, DnWick; static double PrevLow, PrevHigh, PrevOpen, PrevClose, CurVolume, CurLow, CurHigh, CurOpen, CurClose; static datetime PrevTime; //+------------------------------------------------------------------+ // This is only executed ones, then the first tick arives. if(HstHandle < 0) { // Init // Error checking if(!IsConnected()) { Print("Waiting for connection..."); return(0); } if(!IsDllsAllowed()) { Print("Error: Dll calls must be allowed!"); return(-1); } if(MathAbs(RenkoBoxOffset) >= RenkoBoxSize) { Print("Error: |RenkoBoxOffset| should be less then RenkoBoxSize!"); return(-1); } switch(RenkoTimeFrame) { case 1: case 5: case 15: case 30: case 60: case 240: case 1440: case 10080: case 43200: case 0: Print("Error: Invald time frame used for offline renko chart (RenkoTimeFrame)!"); return(-1); } // int BoxSize = RenkoBoxSize; int BoxOffset = RenkoBoxOffset; if(Digits == 5 || (Digits == 3 && StringFind(Symbol(), "JPY") != -1)) { BoxSize = BoxSize*10; BoxOffset = BoxOffset*10; } if(Digits == 6 || (Digits == 4 && StringFind(Symbol(), "JPY") != -1)) { BoxSize = BoxSize*100; BoxOffset = BoxOffset*100; } if(StrangeSymbolName) SymbolName = StringSubstr(Symbol(), 0, 6); else SymbolName = Symbol(); BoxPoints = NormalizeDouble(BoxSize*Point, Digits); PrevLow = NormalizeDouble(BoxOffset*Point + MathFloor(Close[Bars-1]/BoxPoints)*BoxPoints, Digits); DnWick = PrevLow; PrevHigh = PrevLow + BoxPoints; UpWick = PrevHigh; PrevOpen = PrevLow; PrevClose = PrevHigh; CurVolume = 1; PrevTime = Time[Bars-1]; // create / open hst file HstHandle = FileOpenHistory(SymbolName + RenkoTimeFrame + ".hst", FILE_BIN|FILE_WRITE); if(HstHandle < 0) { Print("Error: can\'t create / open history file: " + ErrorDescription(GetLastError()) + ": " + SymbolName + RenkoTimeFrame + ".hst"); return(-1); } // // write hst file header int HstUnused[13]; FileWriteInteger(HstHandle, 400, LONG_VALUE); // Version FileWriteString(HstHandle, "", 64); // Copyright FileWriteString(HstHandle, SymbolName, 12); // Symbol FileWriteInteger(HstHandle, RenkoTimeFrame, LONG_VALUE); // Period FileWriteInteger(HstHandle, Digits, LONG_VALUE); // Digits FileWriteInteger(HstHandle, 0, LONG_VALUE); // Time Sign FileWriteInteger(HstHandle, 0, LONG_VALUE); // Last Sync FileWriteArray(HstHandle, HstUnused, 0, 13); // Unused // // process historical data int i = Bars-2; //Print(Symbol() + " " + High[i] + " " + Low[i] + " " + Open[i] + " " + Close[i]); //--------------------------------------------------------------------------- while(i >= 0) { CurVolume = CurVolume + Volume[i]; UpWick = MathMax(UpWick, High[i]); DnWick = MathMin(DnWick, Low[i]); // update low before high or the revers depending on is closest to prev. bar bool UpTrend = High[i]+Low[i] > High[i+1]+Low[i+1]; while(UpTrend && (Low[i] < PrevLow-BoxPoints || CompareDoubles(Low[i], PrevLow-BoxPoints))) { PrevHigh = PrevHigh - BoxPoints; PrevLow = PrevLow - BoxPoints; PrevOpen = PrevHigh; PrevClose = PrevLow; FileWriteInteger(HstHandle, PrevTime, LONG_VALUE); FileWriteDouble(HstHandle, PrevOpen, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevLow, DOUBLE_VALUE); if(ShowWicks && UpWick > PrevHigh) FileWriteDouble(HstHandle, UpWick, DOUBLE_VALUE); else FileWriteDouble(HstHandle, PrevHigh, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevClose, DOUBLE_VALUE); FileWriteDouble(HstHandle, CurVolume, DOUBLE_VALUE); UpWick = 0; DnWick = EMPTY_VALUE; CurVolume = 0; CurHigh = PrevLow; CurLow = PrevLow; if(PrevTime < Time[i]) PrevTime = Time[i]; else PrevTime++; } while(High[i] > PrevHigh+BoxPoints || CompareDoubles(High[i], PrevHigh+BoxPoints)) { PrevHigh = PrevHigh + BoxPoints; PrevLow = PrevLow + BoxPoints; PrevOpen = PrevLow; PrevClose = PrevHigh; FileWriteInteger(HstHandle, PrevTime, LONG_VALUE); FileWriteDouble(HstHandle, PrevOpen, DOUBLE_VALUE); if(ShowWicks && DnWick < PrevLow) FileWriteDouble(HstHandle, DnWick, DOUBLE_VALUE); else FileWriteDouble(HstHandle, PrevLow, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevHigh, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevClose, DOUBLE_VALUE); FileWriteDouble(HstHandle, CurVolume, DOUBLE_VALUE); UpWick = 0; DnWick = EMPTY_VALUE; CurVolume = 0; CurHigh = PrevHigh; CurLow = PrevHigh; if(PrevTime < Time[i]) PrevTime = Time[i]; else PrevTime++; } while(!UpTrend && (Low[i] < PrevLow-BoxPoints || CompareDoubles(Low[i], PrevLow-BoxPoints))) { PrevHigh = PrevHigh - BoxPoints; PrevLow = PrevLow - BoxPoints; PrevOpen = PrevHigh; PrevClose = PrevLow; FileWriteInteger(HstHandle, PrevTime, LONG_VALUE); FileWriteDouble(HstHandle, PrevOpen, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevLow, DOUBLE_VALUE); if(ShowWicks && UpWick > PrevHigh) FileWriteDouble(HstHandle, UpWick, DOUBLE_VALUE); else FileWriteDouble(HstHandle, PrevHigh, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevClose, DOUBLE_VALUE); FileWriteDouble(HstHandle, CurVolume, DOUBLE_VALUE); UpWick = 0; DnWick = EMPTY_VALUE; CurVolume = 0; CurHigh = PrevLow; CurLow = PrevLow; if(PrevTime < Time[i]) PrevTime = Time[i]; else PrevTime++; } i--; } LastFPos = FileTell(HstHandle); // Remember Last pos in file // Comment("RenkoLiveChart(" + RenkoBoxSize + "): Open Offline ", SymbolName, ",M", RenkoTimeFrame, " to view chart"); if(Close[0] > MathMax(PrevClose, PrevOpen)) CurOpen = MathMax(PrevClose, PrevOpen); else if (Close[0] < MathMin(PrevClose, PrevOpen)) CurOpen = MathMin(PrevClose, PrevOpen); else CurOpen = Close[0]; CurClose = Close[0]; if(UpWick > PrevHigh) CurHigh = UpWick; if(DnWick < PrevLow) CurLow = DnWick; FileWriteInteger(HstHandle, PrevTime, LONG_VALUE); // Time FileWriteDouble(HstHandle, CurOpen, DOUBLE_VALUE); // Open FileWriteDouble(HstHandle, CurLow, DOUBLE_VALUE); // Low FileWriteDouble(HstHandle, CurHigh, DOUBLE_VALUE); // High FileWriteDouble(HstHandle, CurClose, DOUBLE_VALUE); // Close FileWriteDouble(HstHandle, CurVolume, DOUBLE_VALUE); // Volume FileFlush(HstHandle); UpdateChartWindow(); return(0); // End historical data / Init } //---------------------------------------------------------------------------- // HstHandle not < 0 so we always enter here after history done // Begin live data feed UpWick = MathMax(UpWick, Bid); DnWick = MathMin(DnWick, Bid); CurVolume++; FileSeek(HstHandle, LastFPos, SEEK_SET); //------------------------------------------------------------------------- // up box if(Bid > PrevHigh+BoxPoints || CompareDoubles(Bid, PrevHigh+BoxPoints)) { PrevHigh = PrevHigh + BoxPoints; PrevLow = PrevLow + BoxPoints; PrevOpen = PrevLow; PrevClose = PrevHigh; FileWriteInteger(HstHandle, PrevTime, LONG_VALUE); FileWriteDouble(HstHandle, PrevOpen, DOUBLE_VALUE); if (ShowWicks && DnWick < PrevLow) FileWriteDouble(HstHandle, DnWick, DOUBLE_VALUE); else FileWriteDouble(HstHandle, PrevLow, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevHigh, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevClose, DOUBLE_VALUE); FileWriteDouble(HstHandle, CurVolume, DOUBLE_VALUE); FileFlush(HstHandle); LastFPos = FileTell(HstHandle); // Remeber Last pos in file if(PrevTime < TimeCurrent()) PrevTime = TimeCurrent(); else PrevTime++; CurVolume = 0; CurHigh = PrevHigh; CurLow = PrevHigh; UpWick = 0; DnWick = EMPTY_VALUE; UpdateChartWindow(); } //------------------------------------------------------------------------- // down box else if(Bid < PrevLow-BoxPoints || CompareDoubles(Bid,PrevLow-BoxPoints)) { PrevHigh = PrevHigh - BoxPoints; PrevLow = PrevLow - BoxPoints; PrevOpen = PrevHigh; PrevClose = PrevLow; FileWriteInteger(HstHandle, PrevTime, LONG_VALUE); FileWriteDouble(HstHandle, PrevOpen, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevLow, DOUBLE_VALUE); if(ShowWicks && UpWick > PrevHigh) FileWriteDouble(HstHandle, UpWick, DOUBLE_VALUE); else FileWriteDouble(HstHandle, PrevHigh, DOUBLE_VALUE); FileWriteDouble(HstHandle, PrevClose, DOUBLE_VALUE); FileWriteDouble(HstHandle, CurVolume, DOUBLE_VALUE); FileFlush(HstHandle); LastFPos = FileTell(HstHandle); // Remeber Last pos in file if(PrevTime < TimeCurrent()) PrevTime = TimeCurrent(); else PrevTime++; CurVolume = 0; CurHigh = PrevLow; CurLow = PrevLow; UpWick = 0; DnWick = EMPTY_VALUE; UpdateChartWindow(); } //------------------------------------------------------------------------- // no box - high/low not hit else { if(Bid > CurHigh) CurHigh = Bid; if(Bid < CurLow) CurLow = Bid; if(PrevHigh <= Bid) CurOpen = PrevHigh; else if(PrevLow >= Bid) CurOpen = PrevLow; else CurOpen = Bid; CurClose = Bid; FileWriteInteger(HstHandle, PrevTime, LONG_VALUE); // Time FileWriteDouble(HstHandle, CurOpen, DOUBLE_VALUE); // Open FileWriteDouble(HstHandle, CurLow, DOUBLE_VALUE); // Low FileWriteDouble(HstHandle, CurHigh, DOUBLE_VALUE); // High FileWriteDouble(HstHandle, CurClose, DOUBLE_VALUE); // Close FileWriteDouble(HstHandle, CurVolume, DOUBLE_VALUE); // Volume FileFlush(HstHandle); UpdateChartWindow(); } return(0); } //+------------------------------------------------------------------+ int deinit() { if(HstHandle >= 0) { FileClose(HstHandle); HstHandle = -1; } Comment(""); return(0); } //+------------------------------------------------------------------+
已弄好了，随便改了一下，可以实现运行EA了，呵 extern bool LiveUpdateMultipleCharts = false; 这个参数记得改为False 也就是说，指标只更新一个窗口，这样就能运行EA了 这些功能蛮有用的，因为自己的EA就是运行在这样的OFFLINE图上，如果实现更新多个窗口，那是个好事情。现在还没研究，改天有时间再看看。 Code: //+------------------------------------------------------------------+ //| MT4 Indicator: v1.8 P4L PeriodCon.mq4 | //| Previous names: periodcon.mq4, Period_Converter_Opt.mq4| //| Copyright ?2005, MetaQuotes Software Corp. | //| http://www.metaquotes.net | //| v1.5 modified by wfy05@talkforex based on Period_Converter| //| http://www.talkforex.com | //| v1.6 - 1.8 modified by pips4life of ForexFactory.com | //+------------------------------------------------------------------+ // // Quickstart Instructions: // Copy this file to to your MT4 indicators folder: // On XP, usually: C:\Program Files\__your_MT4_broker__\experts\indicators\ // // Read the extensive notes and directions below. // Review the "extern" variable settings further below. Change as desired. // Restart MT4 or do "Compile" in MetaEditor. // Open a source chart and add this indicator with desired settings. // Then File -> Open offline -> (choose the specified chart from the list; click "Open") //v1.6, v1.7, v1.8: #property copyright "pips4life of forexfactory.com" #property link "http://www.forexfactory.com/showthread.php?t=206301" //v1.5 ?? //v1.4: //#property copyright "wfy05@talkforex.com" //#property link "http://www.mql4.com/codebase/indicators/277/" #property indicator_chart_window #property show_inputs #include <WinUser32.mqh> // The above include is missing some needed function(s) #import "user32.dll" int GetParent(int hWnd); int RegisterWindowMessageA(string lpString); #import /* Readme: (v1.6 & v1.7 updates by pips4life, renamed to "P4L PeriodCon.mq4") This new version adds substantial capability to the previous versions. Offsets (timeshifts) are now fully supported for (almost) any multiple of any chart. More than one of this indicator can be added to a single source chart to generate multiple offline charts with different offsets, e.g. an H1 chart can (theoretically) have 24 of this indicator added, each with different hourly offsets, to generate 24 different Daily charts. (It would not be recommended for performance reasons but it *should* work; at least this indicator is now architected differently to be able to do 24+ offset charts). As always, you must keep your source chart open at all times in order that the generated "offline" charts get their live-updates with each tick. FYI, in v1.7, charts with bars longer than 1 month work but are different from other normal period charts due to limitations with MT4. If the effective period is >1month, then EITHER the *symbol* name or the *period* will reflect the fact the chart is > 1-Month. If variable "Over_1MN_alters_Symbol_name=true" (default), then the symbol name will indicate the actual period as a multiple of the apparent period. Examples: 2-month bars: EURUSD_x2,Monthly (2 x Monthly) 6-week bars: EURUSD_x6,Weekly (6 x Weekly = W6) 12-month bars: EURUSD_x12,Monthly (12 x Monthly, i.e. Yearly) 12-month +1 month timeshift: (Not) EURUSD+1Nx12,Monthly (NO! Illegal 12-character symbol name!) (Use) EU+1N_x12,Monthly (See ***Note) (***Note, if a timeshift is also used, the symbol name will indicate both, BUT due to an 11-character MT4 limit, the name may get hacked in order to shorten it to keep within the character limit). If variable "Over_1MN_alters_Symbol_name=false", then IT IS CRITICAL that you note the proper name of the generated offline chart that the program tells you (by popup alert) when you add this indicator to a chart. You must then use the menu commands: File -> Open offline -> (scroll down to the *same* generated name) (e.g. "EURUSD+1H,Daily" is NOT the same chart as "EURUSD,Daily") FYI, because of the new offline timeshifted chart name, this affects what the command "Symbol()" will return. If you use other indicators that rely upon the Symbol() command (or NULL default) to be, e.g. exactly "EURUSD", then such programs may not work unless modified to be compatible with this new chart naming standard! Please note that v1.5 had some support for hourly offsets (on D1's), but the chart name used to be "EURUSD,1441". The "1441" was also a problem for some indicators because it changed the "Period()" value from the standard "1440" to the non-standard value of "1441". This broke some indicators -- but that was an older version and this indicator now returns the standard values with respect to "Period()". Another big change is that the older versions could only live-update a single offline chart with a given name. This version will live-update every offline chart that shares the same name. (If for reasons of performance you decide the old single-chart method works better for you, there is an external variable you can change to use the older method, but you are advised to open only one of each offline chart. If "false", the 2nd-Nth ones open will not live-update). The meaning of an offset such as "+1H" is as follows: Suppose you have opened the chart: EURUSD+1H,Daily (offline) At the top of your MT4 Market Watch window, the current "broker" time is given. Suppose it says "21:45:00". Your offline chart time is therefore "+1H" relative to the "broker" time, which would be "22:45:00". A new Daily candle will form when the broker time is "23:00:00" which is when the "+1H" chart time is "00:00:00". You will note that for the majority of broker feeds, there are SIX Daily candles formed per week. Usually there is a small Daily candle with either a Sunday date or a Saturday date depending on your broker's time offset. If your broker, regardless of broker time, has a trading week <= 5*24 hours (such as from Sunday 5PM ET to Friday 5PM ET), then a key advantage of this indicator is that you can choose a timeshift value such that the offline chart time of 00:00:00 corresponds to this key time of Sunday 5PM, ET (17:00:00). By doing so, you can create an offline chart with only 5-bars-per-week! This may be useful if you are drawing trendlines or channels over a long period of time. The slope (and therefore price intercepts with the lines) will be different when you have 5 vs. 6 bars per week on your Daily charts. Example: Suppose you have a broker time which corresponds to GMT. At 00:00:00 GMT, it is 19:00:00 ST (7PM) in NY, depending on ST/DST dates AND depending on whether your broker follows NY ST/DST changeover dates or some other choice of changeover dates! What we would like is for an offline "00:00:00" to correspond to 17:00:00 (5PM NY), so, we choose an offset of "-2H". This *MAY* give you the desired 5-bars-per-week. Many factors are involved such as what time of year it is vs. the ST/DST changeover dates, whether your broker follows the U.S. ST/DST dates or some other dates like England or Australia (or Japan which doesn't have DST). It also depends on whether your broker has only 5*24 hourly bars per week or less. If you are lucky then your new Daily chart will have 5 daily-bars-per-week year-round. If it is inconsistent with 5-per-week part of the year and 6-per-week a different part of the year, then I don't recommend using that chart for critical slope/trendline intercepts. Another useful consequence of supporting timeshifts is that you can convert the broker time into your LOCAL time! The bars on H1 or below are otherwise the same shape. (Bars above H1 like H4 and especially D1 may appear different because the starting bar 00:00:00 time is now offset). Suppose your broker time says it is 21:45:00. Your local time is 15:45:00. The difference is "-6H" which we can generate with a TimeShiftAdd_in_HptMM value. Open a source chart (e.g. an M15), add this indicator, and generate an M15 offline chart (mult = 1) with an offset of "-6H" which would be entered as "-6.0" (-6hr + 0min) The generated chart will then be "xxxxxx-6H,M15". When you look at the times given on the X-axis of the chart, they will show you local times. Open your native M15 chart and the offline M15 chart. The bars should look exactly the same; only the times are different. The external variable "TimeShiftAdd_in_HptMM" is a number entered as: H.MM Examples: 1.0 = 1hr, 1.30 OR 0.9 = 90min, -0.05= -5min, -2.0 = -2hr Note that "1.5" does NOT equal 90min, but rather 110min (60+50)! (FYI: This somewhat unusual style of number entry makes it easier to enter the most common values which would be an integer number of hours. However, you can still enter a minute offset like 0.05 (5min) with ease. The alternative would either be to enter in bars or in minutes. If in bars, one is constantly calculating the shift_in_bars based on the current chart, be it M5, M15, M30, H1, etc. If entered in minutes, then large numbers of hours are clumsy to calculate and remember (e.g 23hr*60m/hr = 1380min). If it were in pure hours, then how would one accurately enter 5min/60 = 0.0833333333...?! With the H.MM syntax, one can enter any timeshift accurately and with ease). Many people use "CandleTime.mq4" or a variation to graphically display a countdown timer for how much time is left before the latest bar closes. As this is very useful in conjunction with these offline charts, you MUST use a version such as the new "P4L CandleTime.mq4" v1_6 (Nov 2009). That program uses the chart "Symbol()" name to find the chart offset and adjusts the remaining bar time accordingly. Download "P4L CandleTime.mq4" from: http://www.forexfactory.com/showthread.php?t=109305 For example, at "21:45:00", a normal Daily chart bar would display "2:15:00" remaining time for the most recent bar. However, for the +1H,Daily chart, it should display "1:15:00" remaining bar time. The "P4L CandleTime.mq4" indicator also has an option to display the remaining time as a chart Comment. (Change an external variable). Final comment re v1_6: Note that MT5 is in beta and should be released in 2010. Supposedly any timeframe chart (in minutes) can be generated with MT5 (e.g. M10, M20, H2, H8, ... I do not know what the maximum supported value is). Therefore, you might already be able to accomplish some of your non-standard timeframe requirements using a demo MT5 account even today. (Search for MT5 download). However, I am unfamiliar with the details of MT5 and I cannot say whether or not the timeshift feature will be available in basic MT5 or whether a new indicator or EA must be written to accomplish the same timeshift feature as this indicator does on MT4. I guess we'll find out together... Comments regarding the previous v1_5 update are left here for additional reference: I. (v1.5 update) Features: This is an improved version of period converter for MT4 based on the MT4's default period converter by metaquotes. The default period converter script do not support real-time refreshing, and consume lots of CPU (50%-9x%) making the whole system slow. Also, the default one is a script which do not save when you exit MT4, so you have to apply every converter script again after restarting, quite annoying. This one fixed all above problems: 1. Real-time updating or custom interval millisecond level updating. 2. Low CPU cost, average 5%-10% or less. 3. Works as an indicator, so can be saved and reloaded during restart. 4. There is no one converter per chart limitation as it is not script any more, you can only use one window as source to generate as many new timeframe charts as possible. 5. Auto updating if there is new history block loaded. II. How to use: Copy the mq4 file to your MT4 indicators folder (experts\indicators) to install it as an indicator, NOT script. then in the custom indicator list, attach period_converter_opt to the chart you want. It support 4 parameters: PeriodMultiplier: new period multiplier factor, default is 2 UpdateInterval_in_msec: update interval in milliseconds, zero means update real-time. default is zero. Indicator_On: You can disable it without remove it with this option. Other parameters are comments or for debugging, it is safe to ignore them. Also Make sure you have Allow Dll imports option checked in common tab or it won't work After that, File->Open Offline to open the generated offline data. then the offline data will be updated automatically. As long as you keep the source chart open and the converter indicator running, the generated chart including indicators inside will always be updated. also you can close the generated chart and open again later from File->Open Offline without problem. If you want to quit MT4, you can leave those offline chart as other normal online charts. when you start MT4 next time, those charts will also be loaded and updated. III. Notes: 1. Do NOT uncheck the "offline chart" option in offline chart common properties. or after MT4 restart, it will treat that chart as online chart and request the data from server, resulting empty chart window. 2. You can attach more than one converter to same window with different PeriodMultiplier, e.g: you can attach 3 converter with PeriodMultiplier = 2, 4, 10 to M1 to generate M2, M4, M10 at the same time. It is even ok to use the M1 chart to generate Hourly chart like H2, which only cost a few more CPU resource during initial conversion. but usually most server don't have much data for those short period. resulting the generated data isn't long enough for long period. so it is suggested to use Hourly/Daily charts as source when needed. 3. The real-time updating mode updates quotes as fast as possible, but as this is done via script, and MT will skip calling start() function when your PC is busy and lots of quotes income. anyway, this seldom happen, and you can at least get 10 updates each seconds which is much more than enough. 4. The offline chart don't have a bid line showing in chart, but all data in the chart including the indicators is still being updated, so don't worry. you can show the bid line by unclick the "offline chart" option in chart properties. but which don't helps much and if you forget to check "offline chart" option before exit. it will cause errors and become empty on next startup. you have to close the window and open again from File->Open offline, which don't worth the trouble. IV. History: 2009.12.10 v1.8 New external variable: Over_1MN_alters_Symbol_name = true (default; more readable). If you prefer NOT to change the Symbol name for charts > 1-Month, then "false" will alter the Period() instead. Indicators that care more about the Symbol() name may be compatible, so long as they don't care about getting a correct "Period()" value (which is always wrong anyway for any chart > 1-Month, due to MT4 limitations and the hack this program used to get around this). 2009.12.07 1.7 (By pips4life of forexfactory, enhanced based on an idea by circlesquare) Added external variable: TimeShiftAdd_in_Bars Note, this value ADDS to any timeshift specified by TimeShiftAdd_in_HptMM. The "Bars" syntax is much easier for very high timeframe timeshifts whereas the "H.MM" syntax is easier for low timeframe timeshifts. This version supports the generation of charts with Period > Monthly. The "Symbol()" name uses new syntax to indicate the period is higher than 1 month (which MT4 cannot display unless tricked into thinking it is <= 1-month). Here are chartname ("Symbol,Period") syntax examples: EURUSD_x2,Monthly (MN2 chart) EURUSD-1Nx2,Monthly (MN2 chart, offset by "-1N" (1 Month) (NOTE: "N" not "MN" or "M") EURUSD-1Wx5,Weekly (W5 chart, offset by -1W timeshift) EURUSD_x12,Monthly (MN12 (i.e. Yearly) chart) EURUSD+1Nx12 (ILLEGAL 12-character name! NOT created!) EU+1N_x12 (EURUSD is shortened to "EU". The "_" before "x" is used if within character limit). SEKRUB+1Nx,M43188 ( An unusual example, but if the symbol name is not shortened, and a timeshift is used, and there is no room left (within the 11-characters max) to add the "x#" (# = PeriodMultiplier), then the reported period is the source chart "Period() - PeriodMultiplier". In this example, M43188 was from Monthly(43200) - 12 (A Monthly chart - PeriodMultiple-of-12) There was no room for "x12" but there was room for just "x" so it was added. Final result: This is a Yearly (1 bar is 12mo) chart, timeshifted by +1Month. NOTE: The MT4 symbol length limit is only 11. This requires a lot more hacking and jumping through hoops to keep below this character limit whenever a timeshift is used for a chart TF > Monthly, or whenever a large number timeshift is used (regardless of chart TF) that would cause the symbol name to exceed 11 characters. The next v1_3 "P4L CandleTime.mq4" will have the routines needed to unconvert the strange changes to symbol and/or period to get the true effective symbol, period, and timeshift values. 2009.11.11 1.6 (By pips4life of forexfactory, partly based on an idea by rangebound) Users can now open same-timeframe charts with different (multiple) timeshifts. For example, open an H1 chart and add multiple instances of this indicator, each with multiplier=24, but use several different timeshift values. This highly-useful feature will show what the bars look like if the start/stop times are shifted by any number of hour(s). Similarly, do the same thing for H4 charts. Compare your native H4 charts with the 3 possible others charts that use timeshifts of 1,2, and 3 hours. Added support for real-time updating of *multiple* offline windows. In other words, you can open 2 or more M10 charts and each will update. Because it loops and checks every window, there *may* be a cost in CPU time. If you desire only to update the first-found offline chart, go back to the old method by setting LiveUpdateMultipleCharts=false. A few other updates to variable names were made for clarity. The meaning of the old "TimeShift" was clarified (and is reversed from the previous meaning which had previously subtracted from the broker time; now "+" means ADD). Known problem(s): Adding this indicator to a Monthly chart with PeriodMultipler=2 should generate a ",MN2" chart but the "Open offline" list displays it as ",D60". More importantly, even if you open that ",D60" chart it doesn't seem to work! In fact, anything above a ",Monthly" chart appears not to work (MT4 v4.00 Build 225) 2006.02.16 1.5 (By ???) Added (discontinued) TimeShift (in bars) option, can be used to shift hour timeframe to generate daily timeframe when your timezone is different from the server, default is zero. 2005.12.24 1.4 (By wfy05@talkforex.com) faster to detect if data changed by removing float point operations, added support to output CSV file in real time. OutputCSVFile = 0 means no CSV. OutputCSVFile = 1 means CSV + HST OutputCSVFile = 2 CSV only, no HST . (useful if you want to generate CSV for builtin periods) CSV Filename will be the same as HST file except the extension. added safe checking for PeriodMultiplier. 2005.12.04 1.3 Fixed missing data when there is large amount of data loaded in several blocks, and support auto updating when new history is loaded. 2005.11.29 1.2 Additional fix for missing data and server changing. 2005.11.29 1.1 Fixed missing partial data after restart. Reinitialize after changing server or data corrupted. 2005.11.28 1.0 Initial release */ extern double FYI_Version = 1.7; // code version extern string FYI_BuildInfo = "2009.12.07 by pips4life of ForexFactory"; extern int PeriodMultiplier = 2; // new period multiplier factor extern string FYI_TimeShift_HptMM = "H.MM 1.0=1hr, 1.3 or 0.9=90min, -0.05= -5min"; //NOTE: "1.5" is NOT 90min but 110min! extern double TimeShiftAdd_in_HptMM = 0.0; // time shift value, H.MM. extern int TimeShiftAdd_in_Bars = 0; // time shift value in Bars (easier for higher timeframes). NOTE: The two timeshifts ADD!! (Both are in effect!) //extern double TimeShiftAdd_in_Bars = 0; //OLD method. Time shift value. Type "double" allows fractional bars, like 0.25 = 1/4 bar. extern int UpdateInterval_in_msec = 0; // update interval in milliseconds, zero means update real-time. extern string FYI_OutputCSVFile = "0=HST only; 1=CSV+HST; 2=CSV only"; extern int OutputCSVFile = 0; // also output CSV file? (CSV means "comma separated values". File can be imported into various tools & programs) extern bool LiveUpdateMultipleCharts = false; //True (recommended) is more CPU but will update all offline charts found. extern bool LimitedAlertsEnabled = true; // Sometimes an Alert is the best way to notify you rather than the experts (Print) log. extern bool Over_1MN_alters_Symbol_name = true; // If true, Symbol() name changes, if false, Period = (Period() - PeriodMultiplier). Chartname is "symbol,period", so... // Examples: If true, 2-mo chart: EURUSD_x2,Monthly False: EURUSD,M43198 (where PERIOD_MN1=43200, and 43200-2=43198) // If true, 5-wk chart: EURUSD_x5,Weekly False: EURUSD,M10075 (where PERIOD_W1=10080, and 10080-5=10075) // Choice "false" is for indicators (especially MTF) that require the normal "Symbol()" name, but don't // care about "Period()" // NOTE: A timeshifted chart (ANY timeframe) must always change the Symbol() name, e.g. EURUSD+1H,Daily extern bool Indicator_On = true; // "False" is an easy way to disable without removing from the source chart. bool Debug = false; //Generally for developer use // Regarding the auto-adjustment of the symbol name: // Always pay attention to the chart name it tells you it will generate so you will know which offline // chartname to open! See the experts log or maybe an Alert. // Unless you have a non-zero timeshift, you cannot create an offline chart with the same name as a // regular period: M1,M5,M10,M15,M30,H1,H4,D1(Daily),W1(Weekly),MN1(Monthly) // If your TimeShiftAdd_in_HptMM is "0", and the new period is not a standard period, it will be called, e.g., "EURUSD,H2". // If you have a Daily chart with positive time shift of 2 hours, the name would be "EURUSD+2H,D1" // Similarly, a time shift of -2 hours would be "EURUSD-H2,D1". int FileHandle = -1; int CSVHandle = -1; int NewPeriod = 0; int NewPeriodDisplayed; string symbol; string symboloutput; #define OUTPUT_HST_ONLY 0 #define OUTPUT_CSV_HST 1 #define OUTPUT_CSV_ONLY 2 #define CHART_CMD_UPDATE_DATA 33324 // GetWindowTextA overwrites gwstr but it should initially be at least as long a string as it will become later. // //12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 //119 chars "}; string gwstr = " "; string offlineChartName; int TimeShiftAdd_in_Minutes; bool FLAG_NO_OFFLINE_CHART = false; bool FLAG_FIRSTINITDONE = false; bool FLAG_ERRORFOUND = false; //==================== void DebugMsg(string msg) { if (Debug) Alert(msg); } int init() { string msg; int intShiftByNum; string strShiftByUnit; //TimeShiftAdd_in_Minutes = TimeShiftAdd_in_Bars*Period(); TimeShiftAdd_in_Minutes = MathFloor(TimeShiftAdd_in_HptMM)*60 + MathMod(TimeShiftAdd_in_HptMM*100,100) + TimeShiftAdd_in_Bars * Period(); if (MathMod(TimeShiftAdd_in_Minutes,Period() ) != 0) { //ERROR. TimeShift must be an even multiple of the source chart Period() msg = StringConcatenate("ERROR. ",WindowExpertName(),": Illegal TimeShift value: ",TimeShiftAdd_in_Minutes,"min must a multiple of source TF ",Period() ); Alert(msg); // This is critical so it is forced to Alert //if (!FLAG_FIRSTINITDONE) //{ // if (LimitedAlertsEnabled) Alert(msg); // else Print(msg); //} return(-1); } //safe checking for PeriodMultiplier. if (PeriodMultiplier <= 1) { PeriodMultiplier = 1; //only output CSV file? The ONLY point of PeriodMultiplier == 1, timeshift=0, would be to have a CSV file. if (TimeShiftAdd_in_Minutes == 0) OutputCSVFile = 2; } NewPeriod = Period() * PeriodMultiplier; //if(Period() * PeriodMultiplier < PERIOD_MN1) NewPeriod = Period() * PeriodMultiplier; //else NewPeriod = Period()-PeriodMultiplier;//feel free to change how you come up with an obscure tf lower than monthly. //NewPeriod2=Period() * PeriodMultiplier; symbol = Symbol(); // Figure out the timeshift string to be added to the offline Symbol() name: //if (MathMod(TimeShiftAdd_in_Minutes,PERIOD_MN1) == 0) {strShiftByUnit= "MN"; intShiftByNum = TimeShiftAdd_in_Minutes/PERIOD_MN1;} if (MathMod(TimeShiftAdd_in_Minutes,PERIOD_MN1) == 0) {strShiftByUnit= "N"; intShiftByNum = TimeShiftAdd_in_Minutes/PERIOD_MN1;} // Need to stay within char. limit, so "N" used, not "MN" else if (MathMod(TimeShiftAdd_in_Minutes,PERIOD_W1) == 0) {strShiftByUnit= "W"; intShiftByNum = TimeShiftAdd_in_Minutes/PERIOD_W1;} else if (MathMod(TimeShiftAdd_in_Minutes,PERIOD_D1) == 0) {strShiftByUnit= "D"; intShiftByNum = TimeShiftAdd_in_Minutes/PERIOD_D1;} else if (MathMod(TimeShiftAdd_in_Minutes,PERIOD_H1) == 0) {strShiftByUnit= "H"; intShiftByNum = TimeShiftAdd_in_Minutes/PERIOD_H1;} else {strShiftByUnit= "M"; intShiftByNum = TimeShiftAdd_in_Minutes;} if (intShiftByNum == 0 && OutputCSVFile != OUTPUT_CSV_ONLY && (NewPeriod == PERIOD_M1 || NewPeriod == PERIOD_M5 || NewPeriod == PERIOD_M15 // || NewPeriod == 10 //e.g. Oanda has M10. || NewPeriod == PERIOD_M30 || NewPeriod == PERIOD_H1 || NewPeriod == PERIOD_H4 || NewPeriod == PERIOD_D1 || NewPeriod == PERIOD_W1 || NewPeriod == PERIOD_MN1 )) { symboloutput = symbol; FLAG_NO_OFFLINE_CHART = true; // One cannot generate an offline chart with the same name as a regular TF chart! if (OutputCSVFile != OUTPUT_HST_ONLY) OutputCSVFile = OUTPUT_CSV_ONLY; //2 } else if (intShiftByNum > 0) symboloutput = StringConcatenate(symbol,"+",DoubleToStr(intShiftByNum,0),strShiftByUnit); else if (intShiftByNum < 0) symboloutput = StringConcatenate(symbol,DoubleToStr(intShiftByNum,0),strShiftByUnit); //negative else symboloutput = symbol; if (StringLen(symboloutput) > 11) symboloutput = shortenSymbol(symboloutput); symboloutput = StringSubstr(symboloutput,0,11); // The MAX number of characters for symboloutput is 11, no matter what the offset. NewPeriodDisplayed = NewPeriod; if (NewPeriod > PERIOD_MN1) { msg = "NOTE: For charts > 1-month period, be aware of variable: Over_1MN_alters_Symbol_name"; if (!FLAG_FIRSTINITDONE) { if (LimitedAlertsEnabled) Alert(msg); else Print(msg); } int solen = StringLen(symboloutput); int pmlen = StringLen(DoubleToStr(PeriodMultiplier,0)); if ( solen+pmlen > 10) symboloutput = shortenSymbol(symboloutput); solen = StringLen(symboloutput); if ( Over_1MN_alters_Symbol_name && solen+pmlen <= 9) { NewPeriodDisplayed = Period(); symboloutput = StringConcatenate(symboloutput,"_x",PeriodMultiplier); //<=9 plus 2chars "_x" is always <= 11 MAX } else if ( Over_1MN_alters_Symbol_name && solen+pmlen == 10 && intShiftByNum != 0) { NewPeriodDisplayed = Period(); symboloutput = StringConcatenate(symboloutput,"x",PeriodMultiplier); // ==10 plus 1 char "x" is == 11 MAX, but there must be a "+" or "-" from a timeshift. } else { if ( Over_1MN_alters_Symbol_name && solen <= 10) symboloutput = StringConcatenate(symboloutput,"x"); //The "x" will help to know a larger TF was used. NewPeriodDisplayed = Period() - PeriodMultiplier; if (NewPeriodDisplayed <= 0) NewPeriodDisplayed = 101; //arbitrary (preferably prime) number } } if (NewPeriodDisplayed == PERIOD_MN1) offlineChartName = StringConcatenate(symboloutput,",Monthly (offline)"); //Note, there is no "MN2". Instead it would be D60, but MT4 doesn't handle it (directly). else if (MathMod(NewPeriodDisplayed,PERIOD_W1) == 0) { if (NewPeriodDisplayed == PERIOD_W1) offlineChartName = StringConcatenate(symboloutput,",Weekly (offline)"); else offlineChartName = StringConcatenate(symboloutput,",W",DoubleToStr(NewPeriodDisplayed/PERIOD_W1,0)," (offline)"); } else if (MathMod(NewPeriodDisplayed,PERIOD_D1) == 0) { if (NewPeriodDisplayed == PERIOD_D1) offlineChartName = StringConcatenate(symboloutput,",Daily (offline)"); else offlineChartName = StringConcatenate(symboloutput,",D",DoubleToStr(NewPeriodDisplayed/PERIOD_D1,0)," (offline)"); } else if (MathMod(NewPeriodDisplayed,PERIOD_H1) == 0) offlineChartName = StringConcatenate(symboloutput,",H",DoubleToStr(NewPeriodDisplayed/PERIOD_H1,0)," (offline)"); else offlineChartName = StringConcatenate(symboloutput,",M",NewPeriodDisplayed," (offline)"); if (OpenHistoryAndCSVFiles() < 0) return (-1); WriteHistoryHeader(); UpdateHistoryFile(Bars-1, true); if (FLAG_NO_OFFLINE_CHART) { msg = StringConcatenate("Offline chart not created because it already exists: ",StringSubstr(offlineChartName,0,StringLen(offlineChartName)-10)," (Time shifted by 0min)"); if (OutputCSVFile != OUTPUT_HST_ONLY) msg = StringConcatenate(msg," However, CSV file will be created"); if (!FLAG_FIRSTINITDONE) { if (LimitedAlertsEnabled) Alert(msg); else Print(msg); } } else if (OutputCSVFile == OUTPUT_CSV_ONLY) { msg = StringConcatenate("CSV file will be created: ",StringSubstr(offlineChartName,0,StringLen(offlineChartName)-10),".csv (Time shifted by ",DoubleToStr(TimeShiftAdd_in_Minutes,0),"min )"); if (!FLAG_FIRSTINITDONE) { if (LimitedAlertsEnabled) Alert(msg); else Print(msg); } } else if (LiveUpdateMultipleCharts) { msg = StringConcatenate("Looking for one or more charts named: ",offlineChartName," (Time shifted by ",DoubleToStr(TimeShiftAdd_in_Minutes,0),"min )"); if (OutputCSVFile != OUTPUT_HST_ONLY) msg = StringConcatenate(msg," CSV file will also be created"); if (!FLAG_FIRSTINITDONE) { if (LimitedAlertsEnabled) Alert(msg); else Print(msg); } UpdateMultipleChartWindows(); } else { msg = StringConcatenate("Looking for ONLY the FIRST FOUND chart named: ",offlineChartName," Others will not live-update! (Time shifted by ",DoubleToStr(TimeShiftAdd_in_Minutes,0),"min )"); if (OutputCSVFile != OUTPUT_HST_ONLY) msg = StringConcatenate(msg," CSV file will also be created"); if (!FLAG_FIRSTINITDONE) { if (LimitedAlertsEnabled) Alert(msg); else Print(msg); } UpdateChartWindow(); } if (IsDllsAllowed() == false) { //DLL calls must be allowed msg = StringConcatenate("ERROR. ",WindowExpertName()," will not work unless you turn on: Allow DLL imports"); Alert(msg); // This is critical so it is forced to Alert //if (!FLAG_FIRSTINITDONE) //{ // if (LimitedAlertsEnabled) Alert(msg); // else Print(msg); //} } if (StringLen(symboloutput) > 11) { msg = StringConcatenate("Probable ERROR. MT4 cannot open offline charts with symbol name > 11 characters: ",symboloutput); if (!FLAG_FIRSTINITDONE) { if (LimitedAlertsEnabled) Alert(msg); else Print(msg); } } FLAG_FIRSTINITDONE = true; // This is used to prevent double "Alert" commands when init() is executed again by other routines. return (0); } // end of init() void deinit() { //Close file handle if(FileHandle >= 0) { FileClose(FileHandle); FileHandle = -1; } if (CSVHandle >= 0) { FileClose(CSVHandle); CSVHandle = -1; } } // end of deinit() int OpenHistoryAndCSVFiles() { string fileOpenChartName; fileOpenChartName = StringConcatenate(symboloutput,DoubleToStr(NewPeriodDisplayed,0)); if (!FLAG_NO_OFFLINE_CHART && OutputCSVFile != OUTPUT_CSV_ONLY) { FileHandle = FileOpenHistory(fileOpenChartName + ".hst", FILE_BIN|FILE_WRITE); if (FileHandle < 0) return(-1); } if (OutputCSVFile != OUTPUT_HST_ONLY) { CSVHandle = FileOpen(fileOpenChartName + ".csv", FILE_CSV|FILE_WRITE, ','); if (CSVHandle < 0) return(-1); } return (0); } // end of OpenHistoryAndCSVFiles int WriteHistoryHeader() { string c_copyright; int i_digits = Digits; int i_unused[13] = {0}; int version = 400; if (FileHandle < 0) return (-1); c_copyright = "(C)opyright 2003, MetaQuotes Software Corp."; FileWriteInteger(FileHandle, version, LONG_VALUE); FileWriteString(FileHandle, c_copyright, 64); FileWriteString(FileHandle, symboloutput, 12); FileWriteInteger(FileHandle, NewPeriodDisplayed, LONG_VALUE); FileWriteInteger(FileHandle, i_digits, LONG_VALUE); FileWriteInteger(FileHandle, 0, LONG_VALUE); //timesign FileWriteInteger(FileHandle, 0, LONG_VALUE); //last_sync FileWriteArray(FileHandle, i_unused, 0, ArraySize(i_unused)); return (0); } // end of WriteHistoryHeader static double d_open, d_low, d_high, d_close, d_volume; static int i_time; void WriteHistoryData() { if (FileHandle >= 0) { FileWriteInteger(FileHandle, i_time, LONG_VALUE); FileWriteDouble(FileHandle, d_open, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_low, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_high, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_close, DOUBLE_VALUE); FileWriteDouble(FileHandle, d_volume, DOUBLE_VALUE); } if (CSVHandle >= 0) { int i_digits = Digits; FileWrite(CSVHandle, TimeToStr(i_time, TIME_DATE), TimeToStr(i_time, TIME_MINUTES), DoubleToStr(d_open, i_digits), DoubleToStr(d_high, i_digits), DoubleToStr(d_low, i_digits), DoubleToStr(d_close, i_digits), d_volume); } } // end of WriteHistoryData int UpdateHistoryFile(int start_pos, bool init = false) { static int last_fpos, csv_fpos; int i, ps; int shift; // if (FileHandle < 0) return (-1); // normalize open time ps = NewPeriod * 60; shift = 60 * TimeShiftAdd_in_Minutes; //i_time = (Time[start_pos]-shift)/ps; i_time = (Time[start_pos]+shift)/ps; i_time *= ps; if (init) { //first time, init data d_open = Open[start_pos]; d_low = Low[start_pos]; d_high = High[start_pos]; d_close = Close[start_pos]; d_volume = Volume[start_pos]; i = start_pos - 1; if (FileHandle >= 0) last_fpos = FileTell(FileHandle); if (CSVHandle >= 0) csv_fpos = FileTell(CSVHandle); } else { i = start_pos; if (FileHandle >= 0) FileSeek(FileHandle,last_fpos,SEEK_SET); if (CSVHandle >= 0) FileSeek(CSVHandle, csv_fpos, SEEK_SET); } if (i < 0) return (-1); int cnt = 0; int LastBarTime; //processing bars while (i >= 0) { //LastBarTime = Time[i]-shift; LastBarTime = Time[i]+shift; //a new bar if (LastBarTime >= i_time+ps) { //write the bar data WriteHistoryData(); cnt++; i_time = LastBarTime/ps; i_time *= ps; d_open = Open[i]; d_low = Low[i]; d_high = High[i]; d_close = Close[i]; d_volume = Volume[i]; } else { //no new bar d_volume += Volume[i]; if (Low[i]<d_low) d_low = Low[i]; if (High[i]>d_high) d_high = High[i]; d_close = Close[i]; } i--; } //record last_fpos before writing last bar. if (FileHandle >= 0) last_fpos = FileTell(FileHandle); if (CSVHandle >= 0) csv_fpos = FileTell(CSVHandle); WriteHistoryData(); cnt++; d_volume -= Volume[0]; //flush the data writen if (FileHandle >= 0) FileFlush(FileHandle); if (CSVHandle >= 0) FileFlush(CSVHandle); return (cnt); } // end of UpdateHistoryFile int UpdateChartWindow() { static int hwnd = 0; if (FileHandle < 0) { //no HST file opened, no need updating. return (-1); } if(hwnd == 0) { //trying to detect the chart window for updating hwnd = WindowHandle(symboloutput, NewPeriodDisplayed); } if(hwnd!= 0) { if (IsDllsAllowed() == false) { //DLL calls must be allowed DebugMsg("Dll calls must be allowed"); return (-1); } // if (PostMessageA(hwnd,WM_COMMAND,CHART_CMD_UPDATE_DATA,0) == 0) { int MT4InternalMsg = RegisterWindowMessageA("MetaTrader4_Internal_Message"); if(PostMessageA(hwnd, WM_COMMAND, 0x822c, 0) == 0) hwnd = 0; PostMessageA(hwnd, MT4InternalMsg, 2, 1); } //window not found or PostMessage failed return (-1); } //end of UpdateChartWindow void UpdateMultipleChartWindows() { // This routine by pips4life is an offshoot of an incomplete (but useful) // suggestion by rangebound (of ForexFactory) how to solve // the problem that WindowHandle() only returns the first window it finds. int hwnd,len; if (FileHandle < 0) { //no HST file opened, no need updating. return (-1); } // GetWindowTextA overwrites gwstr but it should initially be at least as long as it will become. // //12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 //119 chars gwstr = " "; hwnd = WindowHandle(symboloutput,NewPeriodDisplayed); //This is non-zero if at least one matching window exists if (hwnd != 0) { if (Debug) Print("Initial WindowHandle: ",hwnd); //if (Debug) Print("Initial gwstr:",gwstr,":"); //len = GetWindowTextA(hwnd,gwstr,80); //Unfortunately, len is always 0, gwstr doesn't get text //if (Debug) Print("First gwstr:",gwstr,":"); //This is often zero-chars even though it was just set to spaces above! //offlineChartName = StringSubstr(gwstr,0,len-1); //hwnd = GetWindow(hwnd,GW_HWNDFIRST); //Always same as WindowHandle //if (Debug) Print("Initial GetWindow: ",hwnd," len: ",len," offlineChartName: ",offlineChartName); //if (Debug) Print(" Owner window: ",GetWindow(hwnd,GW_OWNER)); //Always 0 //if (Debug) Print(" Child window: ",GetWindow(hwnd,GW_CHILD)); //Always 0 //if (Debug) Print(" First window: ",GetWindow(hwnd,GW_HWNDFIRST)); //if (Debug) Print(" Last window: ",GetWindow(hwnd,GW_HWNDLAST)); //same as FIRST //if (Debug) Print(" Next window: ",GetWindow(hwnd,GW_HWNDNEXT)); //Always 0 //if (Debug) Print(" Prev window: ",GetWindow(hwnd,GW_HWNDPREV)); //Always 0 //if (Debug) Print(" GetParent window: ",GetParent(hwnd)); //if (Debug) Print(" GetAncestor-Parent window: ",GetAncestor(hwnd,GA_PARENT)); hwnd=GetParent(hwnd); if (Debug) Print("Initial window using GetParent: ",hwnd); hwnd = GetWindow(hwnd,GW_HWNDFIRST); //Not sure if this is redundant or not. Doesn't hurt and it may be necessary. //len = GetWindowTextA(hwnd,gwstr,80); //if (Debug) Print("First GetWindow: ",hwnd," len: ",len," gwstr:",gwstr,":"," offlineChartName:",offlineChartName,":"); int MT4InternalMsg; while (hwnd !=0) { len = GetWindowTextA(hwnd,gwstr,80); if ((len >0) && gwstr == offlineChartName) //if ((len >0) && (StringSubstr(gwstr,0,len-1) == offlineChartName)) //No does not work. { // PostMessageA(hwnd,WM_COMMAND,CHART_CMD_UPDATE_DATA,0); MT4InternalMsg = RegisterWindowMessageA("MetaTrader4_Internal_Message"); if(PostMessageA(hwnd, WM_COMMAND, 0x822c, 0) == 0) hwnd = 0; PostMessageA(hwnd, MT4InternalMsg, 2, 1); if (Debug) Print("Found and updated this GetWindow: ",hwnd," gwstr: ",gwstr); } //if (Debug) Print("CHECKED GetWindow: ",hwnd," len: ",len," gwstr: ",gwstr,":"); hwnd = GetWindow(hwnd,GW_HWNDNEXT); } } } // end of UpdateMultipleChartWindows /* int PerfCheck(bool Start) { static int StartTime = 0; static int Index = 0; if (Start) { StartTime = GetTickCount(); Index = 0; return (StartTime); } Index++; int diff = GetTickCount() - StartTime; Alert("Time used [" + Index + "]: " + diff); StartTime = GetTickCount(); return (diff); } */ static int LastStartTime = 0; static int LastEndTime = 0; static int LastBarCount = 0; int reinit() { deinit(); init(); LastStartTime = Time[Bars-1]; LastEndTime = Time[0]; LastBarCount = Bars; } // end of reinit bool IsDataChanged() { /* static int LastBars = 0, LastTime = 0, LastVolume = 0; static double LastOpen = 0, LastClose = 0, LastHigh = 0, LastLow = 0; if (LastVolume != Volume[0] || LastBars != Bars || LastTime != Time[0]|| LastClose != Close[0] || LastHigh != High[0] || LastLow != Low[0] || LastOpen != Open[0]) { LastBars = Bars; LastVolume = Volume[0]; LastTime = Time[0]; LastClose = Close[0]; LastHigh = High[0]; LastLow = Low[0]; LastOpen = Open[0]; return (true); } return (false); */ /* fast version without float point operation */ static int LastBars = 0, LastTime = 0, LastVolume = 0; bool ret; ret = false; if (LastVolume != Volume[0]) { LastVolume = Volume[0]; ret = true; } if (LastTime != Time[0]) { LastTime = Time[0]; ret = true; } if (LastBars != Bars) { LastBars = Bars; ret = true; } return (ret); } // end of IsDataChanged int CheckNewData() { static string LastServer = ""; if (Bars < 2) { //the data is not loaded yet. DebugMsg("Data not loaded, only " + Bars + " Bars"); return (-1); } string serv = ServerAddress(); if (serv == "") { //no server yet DebugMsg("No server connected"); return (-1); } //server changed? check this and reinit to prevent wrong data while changing server. if (LastServer != serv) { DebugMsg("Server changed from " + LastServer + " to " + serv); LastServer = serv; reinit(); return (-1); } if (!IsDataChanged()) { //return if no data changed to save resource //DebugMsg("No data changed"); return (-1); } if (Time[Bars-1] != LastStartTime) { DebugMsg("Start time changed, new history loaded or server changed"); reinit(); return (-1); } int i, cnt; //try to find LastEndTime bar, which should be Time[0] or Time[1] usually, //so the operation is fast for (i = 0; i < Bars; i++) { if (Time[i] <= LastEndTime) { break; } } if (i >= Bars || Time[i] != LastEndTime) { DebugMsg("End time " + TimeToStr(LastEndTime) + " not found"); reinit(); return (-1); } cnt = Bars - i; if (cnt != LastBarCount) { DebugMsg("Data loaded, cnt is " + cnt + " LastBarCount is " + LastBarCount); reinit(); return (-1); } //no new data loaded, return with LastEndTime position. LastBarCount = Bars; LastEndTime = Time[0]; return (i); } // end of CheckNewData //+------------------------------------------------------------------+ //| program start function | //+------------------------------------------------------------------+ int start() { static int last_time = 0; if (!Indicator_On) return (0); //always update or update only after certain interval if (UpdateInterval_in_msec != 0) { int cur_time; cur_time = GetTickCount(); if (MathAbs(cur_time - last_time) < UpdateInterval_in_msec) { return (0); } last_time = cur_time; } //if (Debug) PerfCheck(true); int n = CheckNewData(); //if (Debug) PerfCheck(false); if (n < 0) return (0); //update history file with new data UpdateHistoryFile(n); //refresh chart window if (LiveUpdateMultipleCharts) UpdateMultipleChartWindows(); else UpdateChartWindow(); //if (Debug) PerfCheck(false); return(0); } // end of start() //+------------------------------------------------------------------+ string shortenSymbol(string symbolname) { symbolname = stringReplaceFirstMatch(symbolname,"CHF","CF"); symbolname = stringReplaceFirstMatch(symbolname,"CAD","CD"); symbolname = stringReplaceFirstMatch(symbolname,"USD","U"); symbolname = stringReplaceFirstMatch(symbolname,"EUR","E"); symbolname = stringReplaceFirstMatch(symbolname,"GBP","G"); symbolname = stringReplaceFirstMatch(symbolname,"JPY","J"); symbolname = stringReplaceFirstMatch(symbolname,"AUD","A"); symbolname = stringReplaceFirstMatch(symbolname,"NZD","NZ"); // Not planning to convert these less common names... the more one converts, the longer the un-convert routine. //symbolname = stringReplaceFirstMatch(symbolname,"NOK","NK"); //symbolname = stringReplaceFirstMatch(symbolname,"SEK","SK"); //symbolname = stringReplaceFirstMatch(symbolname,"DKK","DK"); //symbolname = stringReplaceFirstMatch(symbolname,"HKD","HK"); //symbolname = stringReplaceFirstMatch(symbolname,"SEKRUB","SKRU"); // Note, one could change pairs of names instead of just base-currency names. //Note: Changing these names back will likely require all possible pairs be specified, EU->EURUSD, NOT just E->EUR & U->USD // More specifically for "EU" in particular, any unconvert must be careful not to change "EURUSD"->"EURUSDRUSD" (wrong). Use: // if (StringFind(symbolname,"EU,0) == 0 && StringFind(symbolname,"EUR",0) != 0) symbolname=stringReplaceFirstMatch(symbolname,"EU","EURUSD") return(symbolname); } // end of shortenSymbol //+------------------------------------------------------------------+ string stringReplaceFirstMatch(string str, string toFind, string toReplace) { int len = StringLen(toFind); int pos = StringFind(str, toFind); if (pos == -1) { return (str); } else if (pos == 0) { return (StringConcatenate(toReplace,StringSubstr(str, pos + len))); } return (StringConcatenate(StringSubstr(str, 0, pos),toReplace,StringSubstr(str, pos + len))); } // end of stringReplaceFirstMatch