change the all windows backcolor, registed with these class(WindowClasss).
and for change the DC\window backcolor we need use WM_ERASEBKGND or other messages for do it(i don't remember how).
but the SetDCBrushColor() do the job, right? but seems be ignored :(
i'm using it in WM_PAINT messages.
can anyone advice me more for change backcolor?