[Lazarus] GetFormImage bug

[Chris Crori]

Since the problem is in my code I will try to figure it out and report any results. The system is a bit complex to post everything, but the basics are the same. If I fail in this I will try to duplicate the problem in smaller forms, so I can post a bug report

Thanks for testing Howard :)


From: Howard Page-Clark 
Sent: Tuesday, May 13, 2014 7:44 PM
To: lazarus at lists.lazarus.freepascal.org 
Subject: Re: [Lazarus] GetFormImage bug
On 13/05/2014 16:49, Chris Crori wrote:
> I have a thumbnail section in my main program form. In the forms, I use
> GetFormImage to make an image and send it to the mainform.
> The bug is that some components are not visible in this image.
> TDBGrid is one and a custom component derived from TBitBtn is another.
> I use the latest stable Lazarus 1.2.2 with FPC 2.6.4 on windows7, both
> 32 and 64 bit

This method
//---------
procedure TForm1.Button1Click(Sender: TObject);
var
   bmp: TBitmap;
begin
   form2.Show;
   bmp:=form2.GetFormImage;
   try
     Image1.Canvas.StretchDraw(Image1.ClientRect, bmp);
   finally
     bmp.Free;
   end;
end;
//---------
shows a DBGrid (and everything else I dropped on form2) nicely on my 
Win7 32bit setup.
Perhaps you need to share the code that drops parts of the bitmap (and 
perhaps the lfm of the imaged form as well).


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