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Taking Screenshots for Processing in Delphi.

nop-90
nop-90 asked
on
Medium Priority
328 Views
Last Modified: 2010-04-05
I want to be able to take screenshots of my desktop and compare then pixel by pixel or otherwise to another screenshot in memory. The purpose of this is to isolate an object from a known background and return a coordinate, preferably in real time.

Thanks alot for any help you can provide.

Tom.
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var
 screenShot : TBitmap;
 dc : HDC;
begin
 screenShot := TBitmap.create;
 with screenShot do
 begin
  pixelFormat := pf24bit;
  width := screen.wdith;
  height := screen.height;
 end;
 dc := getDC(getDeskTopWindow);
 biblt(
  screenShot.canvas.handle,
  0,0,screen.width,screen.height,
  dc,
  0,0,
  SRCCOPY);
 releaseDC(getDeskTopWindow,dc);
end;

Shane
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