VC如何让窗口半透明

转载:http://blog.****.net/bichenggui/article/details/8291946

 //加入WS_EX_LAYERED扩展属性
     LONG styleValue = ::GetWindowLong(m_hWnd, GWL_EXSTYLE); 

     styleValue |= WS_EX_LAYERED; 

     SetWindowLong(m_hWnd,GWL_EXSTYLE,styleValue);