97 lines
3 KiB
MQL5
97 lines
3 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| PieChartSample.mq5 |
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//| Copyright 2000-2025, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2000-2025, MetaQuotes Ltd."
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#property link "https://www.mql5.com"
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#property description "Example of using pie chart"
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//---
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#include <Canvas\Charts\PieChart.mqh>
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//+------------------------------------------------------------------+
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//| inputs |
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//+------------------------------------------------------------------+
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input int Width=600;
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input int Height=450;
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//+------------------------------------------------------------------+
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//| Script program start function |
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//+------------------------------------------------------------------+
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int OnStart(void)
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{
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//--- check
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if(Width<=0 || Height<=0)
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{
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Print("Too simple.");
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return(-1);
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}
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//--- create chart
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CPieChart pie_chart;
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if(!pie_chart.CreateBitmapLabel("PieChart",10,10,Width,Height))
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{
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Print("Error creating pie chart: ",GetLastError());
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return(-1);
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}
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pie_chart.ShowPercent();
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//--- draw
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for(uint i=0;i<30;i++)
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{
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pie_chart.ValueAdd(100*(i+1),"Item "+IntegerToString(i));
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Sleep(10);
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}
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Sleep(2000);
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//--- disable legend
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pie_chart.LegendAlignment(ALIGNMENT_LEFT);
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Sleep(2000);
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//--- disable legend
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pie_chart.LegendAlignment(ALIGNMENT_RIGHT);
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Sleep(2000);
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//--- disable legend
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pie_chart.LegendAlignment(ALIGNMENT_TOP);
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Sleep(2000);
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//--- disable legend
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pie_chart.ShowLegend(false);
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Sleep(2000);
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//--- disable percentage
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pie_chart.ShowPercent(false);
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Sleep(2000);
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//--- disable descriptors
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pie_chart.ShowDescriptors(false);
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Sleep(2000);
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//--- enable all
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pie_chart.ShowLegend();
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pie_chart.ShowValue();
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pie_chart.ShowDescriptors();
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Sleep(2000);
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//--- or like this
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pie_chart.ShowFlags(FLAG_SHOW_LEGEND|FLAG_SHOW_DESCRIPTORS|FLAG_SHOW_PERCENT);
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uint total=pie_chart.DataTotal();
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//--- play with values
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for(uint i=0;i<total && !IsStopped();i++)
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{
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pie_chart.ValueUpdate(i,100*(rand()%10+1));
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Sleep(1000);
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}
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//--- play with colors
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for(uint i=0;i<total && !IsStopped();i++)
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{
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pie_chart.ColorUpdate(i%total,RandomRGB());
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Sleep(1000);
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}
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//--- rotate
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while(!IsStopped())
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{
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pie_chart.DataOffset(pie_chart.DataOffset()+1);
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Sleep(200);
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}
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//--- finish
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pie_chart.Destroy();
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return(0);
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}
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//+------------------------------------------------------------------+
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//| Random RGB color |
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//+------------------------------------------------------------------+
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uint RandomRGB(void)
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{
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return(XRGB(rand()%255,rand()%255,rand()%255));
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}
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//+------------------------------------------------------------------+
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