windows UI: 即时绘制 窗口某区域 RedrawWindow RDW_UPDATENOW

::RedrawWindow(m_hWnd , (CRECT)rcRedraw, NULL, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ERASE);


RDW_UPDATENOW 控制窗体m_hWnd在接收到paint后才返回

RDW_UPDATENOW Causes the affected windows, which you specify by setting the RDW_ALLCHILDREN and RDW_NOCHILDREN values, to receive WM_ERASEBKGND and WM_PAINT messages before the RedrawWindow returns, if necessary.


你可能感兴趣的:(windows,UI,null)