Draw text on a .net Control with negative color of the background - blend

Question

I\'d like to draw a progress bar with percentage in its center, but I\'d like the text to have negative (contrasted) color of the

Answer 1

You can use XOR to calculate the negative (inverted) color;

Public Function InvertColor(color As Long) As Long
    Return (color Xor &HFFFFFF)
End Function

Answer 2

What you're doing is fine. Old tricks like SetROP2() don't work anymore with text getting anti-aliased, especially with ClearType rendering. Getting the aliasing pixels with the wrong color is very noticeable. Graphics.CompositingMode accordingly doesn't support the effects anymore.