- Perhaps you should read the manual.Opens a new chart with the specified symbol and period. The command is added to chart message queue and executed only after all previous commands have been processed -- ChartOpen - Chart Operations - MQL4 ReferenceThe call is not synchronous, it takes time to open a chart, download the bars, and paint it. Where is your wait?
You would know this had you bothered to Check your return codes What are Function return values ? How do I use them ? - MQL4 forum and Common Errors in MQL4 Programs and How to Avoid Them - MQL4 Articles - Perhaps you should read the manual.zero may be the current chart, but no where does it say that a second chart has id one. Perhaps you should find the second id ChartNext - Chart Operations - MQL4 Reference
chart_id
[in] Chart ID. 0 means the current chart. ChartScreenShot - Chart Operations - MQL4 Reference
- Perhaps you should read the manual.The call is not synchronous, it takes time to open a chart, download the bars, and paint it. Where is your wait?
You would know this had you bothered to Check your return codes What are Function return values ? How do I use them ? - MQL4 forum and Common Errors in MQL4 Programs and How to Avoid Them - MQL4 Articles - Perhaps you should read the manual.zero may be the current chart, but no where does it say that a second chart has id one. Perhaps you should find the second id ChartNext - Chart Operations - MQL4 Reference
Thanks Whroeder1!
1. I have added the Sleep function now after ChartOpen to allow for the bars to load.
2. Added the ChartNext code to enumerate the ChartIDs , they now show up in the Output fields ("Experts" tab on the bottom of MT4).
Question I still have - how do I capture (assign the ChartIDs to a variable, i.e. ChartID0 = (output from the ChartNext code, "ChartFirst"?) and ChartID1 = CurrChart(1) ?) Tried many ways, looks like going in circles... :-(
{
ChartOpen( "EURUSD", 15 );
Sleep (5000);
long currChart,prevChart=ChartFirst();
int i=0,limit=100;
Print("ChartFirst =",ChartSymbol(prevChart)," ID =",prevChart);
while(i<limit)// We have certainly not more than 100 open charts
{
currChart=ChartNext(prevChart); // Get the new chart ID by using the previous chart ID
if(currChart<0) break; // Have reached the end of the chart list
Print(i,ChartSymbol(currChart)," ID =",currChart);
prevChart=currChart;// let's save the current chart ID for the ChartNext()
i++;// Do not forget to increase the counter
}
ChartScreenShot(0, "Screenshot of EURUSD M15.gif", 1280, 720); // instead of the "0", I need to pass a captured variable for ChartId (1)? But how to capture it first?
ChartClose(0); //same story here...
return;
}
How about
Or
{
ChartOpen( "EURUSD", 15 );
ChartScreenShot(ChartID(), "Screenshot of EURUSD M15.gif", 1280, 720);
ChartClose(ChartID());
return;
}
Or you can try like this
//| Script program start function |
//+------------------------------------------------------------------+
void OnStart()
{
//---
for(int i=0;i<SymbolsTotal(1);i++)
{
ChartOpen(SymbolName(i,1),PERIOD_M15);
ChartScreenShot(ChartID(),"Screenshot of "+SymbolName(i,1)+" M15.gif",1280,720);
ChartClose(ChartID());
}
}
//+------------------------------------------------------------------+
Question I still have - how do I capture (assign the ChartIDs to a variable,
If successful, it returns
the opened chart ID. Otherwise returns 0. To get error details use the GetLastError() function.
Thanks a lot, Marco, for suggestions. I got it to work, with a slight change though to the code. Posting for benefit of others.
{
ChartOpen( "EURUSD", 15 );
Sleep (5000);
ChartOpen( "GBPUSD", 15 );
Sleep (5000);
long Ch01 = ChartFirst(); // the ChartID() from the First (base) chart
long ChId2 = ChartNext(Ch01); // the ChartID() from the Second Chart
long ChId3 = ChartNext(ChId1); // the ChartID() from the Third Chart
ChartScreenShot(ChId2, "Screenshot of EURUSD M15.gif", 1280, 720);
ChartScreenShot(ChId3, "Screenshot of GBPUSD M15.gif", 1280, 720);
ChartClose(ChId2);
ChartClose(ChId3);
return;
}
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Hi,
I have only one single chart open. EURUSD M5. When running the script below, it does open a Second chart (as planned) - EURUSD M15. I would like the script to take a screenshot of the 2nd graph (M15), but instead it takes the snapshot of the 1st one (M5).
Also, it does not close that second (new) window.
What am I doing wrong?
{
ChartOpen( "EURUSD", 15 );
ChartScreenShot(1, "Screenshot of EURUSD M15.gif", 1280, 720);
ChartClose(1);
return;
}