//获取屏幕的句柄 var wnd = ..win.getDesktop() //获取屏幕的设备环境 var hSrcDC = ::GetWindowDC(wnd) var rc = ::RECT(0,0,500,500)//::RECT(); ::GetClientRect(wnd,rc); ::InvalidateRect(wnd,rc,1); ::UpdateWindow(wnd); 刷新不了