MFC : Make a bitmap with a transparant color

[John E]

@John E :

In your code, where is get pixel color which replace the transparent one ?

In my original code, that colour is passed as a parameter to "DrawTransparentButmap(...) - i.e.

DrawTransparentBitmap(HDC hdc, HBITMAP hBitmap, short xStart, short yStart, COLORREF kTransparentColour, bool bAssume100Green);

However, I noticed that you've removed that parameter in your implementation. In fact, I can't tell from your code whether you're using a different strategy so I can't guess at what you're doing wrong. However, my code does work. I'm using it myself.