On 09/19/2014 02:14 PM, Shuai Meng wrote:

+    total = color[0] + 256 * color[1] + 256 * 256 * color[2];

RGB() macro does the same thing.

I don't quite understand this line..will you explain it in detail please? 

See http://source.winehq.org/source/include/wingdi.h#0434
So total = color[0] + 256 * color[1] + 256*256*color[2] is the same as total = RGB(color[0], color[1], color[2])