BCGSuite for MFC
void CBCGPButton::SetImage ( UINT  uiBmpResId,
UINT  uiBmpHotResId = 0,
UINT  uiBmpDsblResID = 0,
UINT  uiBmpPressedResId = 0 

Specifies an image to be displayed on the button

Call this member function to set a new button's image.

uiBmpResIdResource ID for non-selected image
uiBmpHotResIdResource ID for selected image
uiBmpDsblResIDResource ID of disabled bitmap.
uiBmpPressedResIdResource ID of pressed bitmap.