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pier

Window hooking

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Hi!

Do you believe it is feasible to show some python graphics, say from matplotlib, and the "hook" the window and make it "live" inside a panel of a Delphi application? (when the panel moves/resizes the window moves/resizes with it)? If so is any code for doing this available? (if not I will write it)

Thanks for any suggestion

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Posted (edited)

Thank you so much for your reply. I was aware of the possibility of using the SVG output of matplotlib (which I will use as an intermediate solution), however this is not what I am looking for. matplotlib was just an example of a more general type of approach I am pursuing, i.e. "embedding"/"controlling" graphical output of python applications in order to make it appear more integrated within a Delphi application. Anyhow thank you again for your time and suggestion.

Edited by pier

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In case somebody is interested this is how I managed to nicely integrate matplotlib figures inside my delphi app.

 

1)   the pythons script shows the plot with "plt.show(block=False)"

 

2) this is the code which executes the script and embeds the plot

procedure TForm1.Button1Click(Sender: TObject);

var plotwnd:HWND;
begin
  PythonEngine1.ExecStrings( Synedit1.Lines );

 plotwnd:=Findwindow(nil,'Figure 1');
 if plotwnd<>0 then
 begin
 Windows.SetParent(plotwnd,(PageControl1.Pages[1] as TTabSheet).Handle);
 SetWindowLong(plotwnd, GWL_STYLE, GetWindowLong(Handle, GWL_STYLE) and not WS_BORDER and not WS_SIZEBOX and not WS_DLGFRAME );
 showwindow(plotwnd,sw_showmaximized);
 setforegroundwindow(plotwnd);
 end;

end;

 

the plot is displayed inside a tabsheet which has an event handler to automatically resize the plot

procedure TForm1.PlotResize(Sender: TObject);
begin
   movewindow(plotwnd,0,0,(PageControl1.Pages[1] as TTabSheet).Width,(PageControl1.Pages[1] as TTabSheet).Height,True);
end;

 

 

 

Cattura.PNG

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