How to do correct and quick copy

[vlkc]

hello,

 

Can you help with this: 

 

This does not work at all:

 BitBlt(UniCanvas1.Handle, 0, 0, FrameBitmap.Width, FrameBitmap.Height, FrameBitmap.Canvas.Handle, 10, 10, SRCCOPY);

this - uses too many memory and processor on  unitimer:

UniCanvas1.Bitmap.Assign (FrameBitmap); 

This flickers:

UniImage1.Picture.Bitmap.Width := FrameBitmap.Width;
UniImage1.Picture.Bitmap.Height:= FrameBitmap.Height;
UniImage1.Picture.Bitmap.Canvas.Draw(0,0,FrameBitmap);

How to do correct copy of bitmap to client screen?

 

Thank you.