Window hooking

[pier 4]

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

[pyscripter 694]

See python4delphi/Tutorials/Webinar II at master · pyscripter/python4delphi (github.com) 

Both video and source code.

[pier 4]

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 March 8, 2021 by pier

[pier 4]

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;

 

 

 

[Talal Bader 0]

On 3/11/2021 at 2:26 PM, pier said:

 Windows.SetParent(plotwnd,(PageControl1.Pages[1] as TTabSheet).Handle);
 

this might be stupid question :).   I tried the code but windows showed as undefined, I could not find which library to add to uses to make it recognizable

could you please give some details how to git it work

 

thanks

--- follow up.   found it 🙂

    it is:    

                winapi.windows.setparent ..........

thanks

 

Edited December 26, 2022 by Talal Bader