Get QColor from unsigned long (COLORREF) without including windows.h

Question

I have a project where I need to use an API which expects COLORREF and another API which returns COLORREF. COLORREF is MFC and my project Qt does not want to use any trace of MFC code. COLORREF is nothing but unsigned long eventually, so I hope there could be a solution.

So there are 2 problems:

• Get the unsigned long from API returning COLORREF and create QColor from this unsigned long number. Please note I cannot use GetRValue() or GetGValue() as they would require me to include windows.h.
• From the QColor created (I can do that), convert it to a decent unsigned long which I can send to the API which expects COLORREF.

Answer 1

Since COLORREF is just a DWORD organized as 0x00bbggrr, you can easily convert it to components and construct a QColor out of it.

int r = color & 0xff;
int g = (color >> 8) & 0xff;
int b = (color >> 16) & 0xff;
QColor qc(r, g, b);