Setting pixels of a TBitmap via the Canvas does not work, if there's no widget associated…
Show quoted text 8 lines
Setting pixels of a TBitmap via the Canvas does not work, if there's no
widget associated with the Canvas. The problem is in LM_SETPixel.
Example:
bmp := TBitmap.Create;
bmp.Width := 16;
bmp.Height := 16;
bmp.Canvas.Pixels[0,0] := clBlack;
Fixed
Show quoted text 5 lines
Anyway the implementation of SetPixel look quite cumbersome to me, at
least for standalone (non gtk) bitmaps.
Given a raw bitmap in memory (array of rows of RGB values) what would be
the best way to create a TBitmap from it using the LCL?
The SetPixel should work now, but it will be quite slow. The goal is to provide functions to convert such arrays as whole.
It seems that most of the DIB stuff is not yet implemented in LCL (gtk).
Right.
Mattias