5、接第四帖
使用仪表板时，数据会使用以下函数显示在面板上：//+------------------------------------------------------------------+//| Display data from the specified timeseries index to the panel |//+------------------------------------------------------------------+void DrawData(const int index,const datetime time){//--- Declare the variables to receive data in them MqlTicktick={0}; MqlRates rates[1];//--- Exit if unable to get the current prices if(!SymbolInfoTick(Symbol(),tick)) return;//--- Exit if unable to get the bar data by the specified index if(CopyRates(Symbol(),PERIOD_CURRENT,index,1,rates)!=1) return;//--- Set font parameters for bar and indicator data headers intsize=0; uint flags=0; uint angle=0; string name=panel.FontParams(size,flags,angle); panel.SetFontParams(name,9,FW_BOLD); panel.DrawText("Bar data ["+(string)index+"]",3,panel.TableY1(0)-16,clrMaroon,panel.Width()-6); panel.DrawText("Indicator data ["+(string)index+"]",3,panel.TableY1(1)-16,clrGreen,panel.Width()-6);//--- Set font parameters for bar and indicator data panel.SetFontParams(name,9);//--- Display the data of the specified bar in table 0 on the panel panel.DrawText("Date",panel.CellX(0,0,0)+2, panel.CellY(0,0,0)+2); panel.DrawText(TimeToString(rates[0].time,TIME_DATE), panel.CellX(0,0,1)+2, panel.CellY(0,0,1)+2,clrNONE,90); panel.DrawText("Time",panel.CellX(0,1,0)+2, panel.CellY(0,1,0)+2); panel.DrawText(TimeToString(rates[0].time,TIME_MINUTES),panel.CellX(0,1,1)+2, panel.CellY(0,1,1)+2,clrNONE,90); panel.DrawText("Open",panel.CellX(0,2,0)+2, panel.CellY(0,2,0)+2); panel.DrawText(DoubleToString(rates[0].open,Digits()), panel.CellX(0,2,1)+2, panel.CellY(0,2,1)+2,clrNONE,90); panel.DrawText("High",panel.CellX(0,3,0)+2, panel.CellY(0,3,0)+2); panel.DrawText(DoubleToString(rates[0].high,Digits()), panel.CellX(0,3,1)+2, panel.CellY(0,3,1)+2,clrNONE,90); panel.DrawText("Low", panel.CellX(0,4,0)+2, panel.CellY(0,4,0)+2); panel.DrawText(DoubleToString(rates[0].low,Digits()), panel.CellX(0,4,1)+2, panel.CellY(0,4,1)+2,clrNONE,90); panel.DrawText("Close", panel.CellX(0,5,0)+2, panel.CellY(0,5,0)+2); panel.DrawText(DoubleToString(rates[0].close,Digits()), panel.CellX(0,5,1)+2, panel.CellY(0,5,1)+2,clrNONE,90);//--- Display the indicator data from the specified bar on the panel in table 1 panel.DrawText(ind_title, panel.CellX(1,0,0)+2, panel.CellY(1,0,0)+2); double value=IndicatorValue(handle,index,0); string value_str=(value!=EMPTY_VALUE ? DoubleToString(value,ind_digits) : ""); panel.DrawText(value_str,panel.CellX(1,0,1)+2,panel.CellY(1,0,1)+2,clrNONE,100); //--- Display a description of the indicator line state panel.DrawText("Line state", panel.CellX(1,1,0)+2, panel.CellY(1,1,0)+2); ENUM_LINE_STATE state=LineState(handle,index,0); panel.DrawText(LineStateDescription(state),panel.CellX(1,1,1)+2,panel.CellY(1,1,1)+2,clrNONE,90); //--- Redraw the chart to immediately display all changes on the panel ChartRedraw(ChartID());}此外，当使用仪表板时，面板事件处理程序在OnChartEvent（）EA事件处理函数中调用，以及处理用于接收光标下的柱形索引的事件：//+------------------------------------------------------------------+//| ChartEvent function |//+------------------------------------------------------------------+void OnChartEvent(const int id, const long &lparam, const double &dparam, const string &sparam){//--- Handling the panel//--- Call the panel event handler panel.OnChartEvent(id,lparam,dparam,sparam);//--- If the cursor moves or a click is made on the chart if(id==CHARTEVENT_MOUSE_MOVE || id==CHARTEVENT_CLICK) { //--- Declare the variables to record time and price coordinates in them datetime time=0; double price=0; int wnd=0; //--- If the cursor coordinates are converted to date and time if(ChartXYToTimePrice(ChartID(),(int)lparam,(int)dparam,wnd,time,price)) { //--- write the bar index where the cursor is located to a global variable mouse_bar_index=iBarShift(Symbol(),PERIOD_CURRENT,time); //--- Display the bar data under the cursor on the panel DrawData(mouse_bar_index,time); } }//--- If we received a custom event, display the appropriate message in the journal if(id>CHARTEVENT_CUSTOM) { //--- Here we can implement handling a click on the close button on the panel PrintFormat("%s: Event id=%ld, object id (lparam): %lu, event message (sparam): %s",__FUNCTION__,id,lparam,sparam); }}最新
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