[lmikle]

Сообщение от MSDN

After a bitmap is created, it can be selected into a device context by calling the SelectObject function. However, the bitmap can only be selected into a device context if the bitmap and the DC have the same format.
The CreateBitmap function can be used to create color bitmaps. However, for performance reasons applications should use CreateBitmap to create monochrome bitmaps and CreateCompatibleBitmap to create color bitmaps. Whenever a color bitmap returned from CreateBitmap is selected into a device context, the system checks that the bitmap matches the format of the device context it is being selected into. Because CreateCompatibleBitmap takes a device context, it returns a bitmap that has the same format as the specified device context. Thus, subsequent calls to SelectObject are faster with a color bitmap from CreateCompatibleBitmap than with a color bitmap returned from CreateBitmap.

Ничего не подсказывает?
Т.е. для начала надо смотреть в сторону CreateCompatibleBitmap.