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分享CDocument::UpdateAllViews中,我只能跟踪到 invalidate,不知是在什么地方发送消息 WM_PAINT 从而重画窗口?
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wakeful 2002-06-07
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li_yirong(lyr) is right.
lownr 2001-10-29
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就是啦。
可以在CDocument对应的CView::OnDraw中处理WM_PAINT消息。
可以在CDocument对应的CView::OnDraw中处理WM_PAINT消息。
li_yirong 2001-10-29
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to ： ysdesigned(清泉)
在msdn 中是这样介绍的:Invalidates the entire client area of CWnd. The client area is marked for painting when the next WM_PAINT message occurs. ...
Windows sends a WM_PAINT message whenever the CWnd update region is not empty and there are no other messages in the application queue for that window.
是不是可以这样理解: invalidate 先使client area 等待被重画,然后要求 windows操作系统发 wm_paint 消息??
在msdn 中是这样介绍的:Invalidates the entire client area of CWnd. The client area is marked for painting when the next WM_PAINT message occurs. ...
Windows sends a WM_PAINT message whenever the CWnd update region is not empty and there are no other messages in the application queue for that window.
是不是可以这样理解: invalidate 先使client area 等待被重画,然后要求 windows操作系统发 wm_paint 消息??
waterbogie 2001-10-29
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同意清泉的说法
清泉ys 2001-10-29
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就在invalidate内发送，只不过被vc封装其来你看不到
li_yirong 2001-10-29
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ondraw 是在onpaint中调用的.所以说在ondraw中发送 wm_paint 不对吧!
likevclinux 2001-10-29
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civw的ondraw就行
