[Lazarus] Mac Drawing

Felipe Monteiro de Carvalho felipemonteiro.carvalho at gmail.com
Sat Sep 18 08:45:51 CEST 2010

I would do it like this:

1> Work with a bitmap canvas instead of the image canvas
2> Draw your image to the bitmap
3> Convert the bitmap to a TLazIntfImage
4> It should now be trivial to build an image inversion function, you
can just create a loop to read and change the pixels
5> Convert the TLazIntfImage back to the bitmap
6> Draw the bitmap in the image canvas

More info here:


Felipe Monteiro de Carvalho

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