How to Open Existing chart with mouse click
Have you tried:
(untried)
Edit: tested it, doesn't work. You'll probably have to go user32.dll as Roberto suggests below. Something along the lines of:
int parent = GetParent(handle);
SendMessageW(GetParent(parent), WM_MDIMAXIMIZE, parent, 0);
Hi, I'm hoping someone can me please?
I have been writing in mql4 a dashboard for my trading strategy, I have about 20 pairs open as well, and the dashboard provides a central place to report various information. I have coded a button (I'm using rectangle label) and passing the chart ID by a click mouse event on the button. (There is a one character suffix and so the chart ID is determined by StringSubstr(sparam,1); The code works, in that it will move the respective chart to the specified position but the current chart is still loaded, BUT I want to do is for this function to automatically switch to this new chart. I have searched but can't find any help on how to do this simple operation. I would be really grateful if someone could advise how to programmatically move to an existing chart.
Thanks Guys, that really helped, and now I've got this working as follows for anyone else looking for a solution to open an existing chart.
if (id==CHARTEVENT_OBJECT_CLICK)
{
//the chart ID gets passed to the function because the clicked button has the chart ID prefaced by one character
long chart_number = (long)StringSubstr(sparam,1);
long chartwindow = -1;
if (!ChartGetInteger(chart_number,CHART_WINDOW_HANDLE,0,chartwindow))
{
Print ("Couldn't Get Chart Window");
}
int parent = GetParent(chartwindow);
SendMessageW(GetParent(parent), WM_MDIMAXIMIZE, parent, 0);
}
}
Great, glad you got it working.
if (id==CHARTEVENT_OBJECT_CLICK)
{
//the chart ID gets passed to the function because the clicked button has the chart ID prefaced by one character
long chart_number = (long)StringSubstr(sparam,1);
long chartwindow = -1;
if (!ChartGetInteger(chart_number,CHART_WINDOW_HANDLE,0,chartwindow))
{
Print ("Couldn't Get Chart Window");
}
int parent = GetParent(chartwindow);
SendMessageW(GetParent(parent), WM_MDIMAXIMIZE, parent, 0);
}
}
Just for your own interest, ChartGetInteger() returns a long (not a bool) so you are printing a message if the window handle is 0 (false). You don't store the returned value anywhere so I imagine your code will work the same with this section removed entirely.
Out of interest, do you have this at the top of your code? I don't think you do
If not, add it in and re-compile. You'll almost certainly have some warnings and errors to work through.
Great, glad you got it working.
if (id==CHARTEVENT_OBJECT_CLICK)
{
//the chart ID gets passed to the function because the clicked button has the chart ID prefaced by one character
long chart_number = (long)StringSubstr(sparam,1);
long chartwindow = -1;
if (!ChartGetInteger(chart_number,CHART_WINDOW_HANDLE,0,chartwindow))
{
Print ("Couldn't Get Chart Window");
}
int parent = GetParent(chartwindow);
SendMessageW(GetParent(parent), WM_MDIMAXIMIZE, parent, 0);
}
}
Just for your own interest, ChartGetInteger() returns a long (not a bool) so you are printing a message if the window handle is 0 (false). You don't store the returned value anywhere so I imagine your code will work the same with this section removed entirely.
Out of interest, do you have this at the top of your code? I don't think you do
If not, add it in and re-compile. You'll almost certainly have some warnings and errors to work through.
Thanks Honest_Knave, I understood your point which I agree with. The reason I coded it this way was from the MQL4 docs that gives the following, so I just adapted it. Hope that's okay, it seems to be working fine. I did have the strict property already included, but thanks for pointing that out. So pleased to get this sorted it had me stuck for a while. Cheers
//| The function gets the chart handle |
//+------------------------------------------------------------------+
int ChartWindowsHandle(const long chart_ID=0)
{
//--- prepare the variable to get the property value
long result=-1;
//--- reset the error value
ResetLastError();
//--- receive the property value
if(!ChartGetInteger(chart_ID,CHART_WINDOW_HANDLE,0,result))
{
//--- display the error message in Experts journal
Print(__FUNCTION__+", Error Code = ",GetLastError());
}
//--- return the value of the chart property
return((int)result);
}
Thanks Honest_Knave, I understood your point which I agree with. The reason I coded it this way was from the MQL4 docs that gives the following, so I just adapted it. Hope that's okay, it seems to be working fine.
You know what, ignore what I said! It was the second variant of the function and is actually correct. That also explains why I thought you didn't have #property strict
My bad!
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Hi, I'm hoping someone can me please?
I have been writing in mql4 a dashboard for my trading strategy, I have about 20 pairs open as well, and the dashboard provides a central place to report various information. I have coded a button (I'm using rectangle label) and passing the chart ID by a click mouse event on the button. (There is a one character suffix and so the chart ID is determined by StringSubstr(sparam,1); The code works, in that it will move the respective chart to the specified position but the current chart is still loaded, BUT I want to do is for this function to automatically switch to this new chart. I have searched but can't find any help on how to do this simple operation. I would be really grateful if someone could advise how to programmatically move to an existing chart.
if (id==CHARTEVENT_OBJECT_CLICK)
{
ObjectSetInteger(0,sparam,OBJPROP_SELECTED, false );
ObjectSetInteger(0,sparam,OBJPROP_STATE, false );
long chart_number = (long)StringSubstr(sparam,1);
ChartNavigate(chart_number,CHART_END,0);
}
}