mfc实现父窗口不透明，子窗口半透明效果

mfc实现父窗口不透明，子窗口半透明效果

c++代码

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onerasebkgnd（cdc*pdc）{

//todo：在此添加消息处理程序代码和/或调用默认值//绘制子窗口的背景，用主窗口的背景填充，实现透明效果crectclientrect;cdcdcerasebkgnd;

getclientrect（&clientrect）;intcx=clientrect.width;intcy=clientrect.height;//firstweshouldsaveourdc.cbitmapbitmap;

if（m_dcerasebkgnd.getsafehdc）//deleteouroriginaldc.m_dcerasebkgnd.deletedc;