windows SDK 怎么加载图片?

windows SDK 如何加载图片???
想用一张图片作为窗口的背景,然后在窗口上绘图,窗口背景不变化。
我用画刷绘制,但这样每次绘图时,窗口背景也会被重绘!!!
望大牛支妙招招!!

C/C++ code
 
hBitmap = LoadBitmap (hInstance, TEXT ("mybimap")); 
hBrush = CreatePatternBrush (hBitmap) ;




------解决方案--------------------
LoadBitmap(),创建兼容DC,SelectObject加载位图,BitBlt/StretchBlt() SRCCOPY到目的DC,最后SelectObject()还原之前的位图,DeleteObject删除位图,DeleteDC删除兼容DC