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reduce flicker on timage

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Join Date: Dec 2007
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OnIIcE OnIIcE is offline Offline
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reduce flicker on timage

 
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  #1
Mar 22nd, 2009
hi, im creating a simple image editor/drawer and im having problems with flicker when the canvas is refreshd on draw.

ive got
C++ Syntax (Toggle Plain Text) 
  1. frmPMain->DoubleBuffered = true;
on my form, but im still getting bad flicker when i run my draw shape code such as

C++ Syntax (Toggle Plain Text) 
  1. void Pixie_Draw::DragSquare( int X, int Y, int Width, int Height, TImage* OriginalImage,Graphics::TBitmap* BackBuffer)
  2. {
  3.   Graphics::TBitmap* result = new Graphics::TBitmap();
  4.   result->Assign(BackBuffer);
  5.   result->Canvas->Rectangle(X,Y,Height,Width);
  6.  
  7.   OriginalImage->Picture->Bitmap->Assign(result);
  8.  
  9.   delete result;
  10. }

are there any other methods i can use to remove it?
im using Borland C++ 6

thanks
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Join Date: Dec 2007
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OnIIcE OnIIcE is offline Offline
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Re: reduce flicker on timage

 
0
  #2
Apr 5th, 2009
BUMP

anyone got any ideas?! ^.^

after reading a bit more material online, i think it has somthing to do with when repaints called by the assign and the img is cleard and so dosnt have a image for a split second before the new image is aplied and refreshd? am i right there?
if so how can i stop the bugger from doing it! lol

thanks
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