学步园

1.设置窗口透明

  1: //Set WS_EX_LAYERED on this window

  2: ::SetWindowLong(GetSafeHwnd(),

  3:         GWL_EXSTYLE,

  4: 	   ::GetWindowLongPtr(GetSafeHwnd(),GWL_EXSTYLE)|WS_EX_LAYERED);

  5: 

  6: //Make this window 70% alpha transparent

  7: this->SetLayeredWindowAttributes(0,(255*70)/100,LWA_ALPHA);
2.去除窗口透明
  1: //Remove WS_EX_LAYERED from window style

  2: ::SetWindowLong(GetSafeHwnd(),

  3:     GWL_EXSTYLE,

  4: 	::GetWindowLongPtr(GetSafeHwnd(),GWL_EXSTYLE)&~WS_EX_LAYERED);

  5: //Repaint

  6: this->RedrawWindow();
3.实际运行效果