CXTPCommandBars::RecalcFrameLayout question

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   In RecalcFrameLayout, the method is checking to see if the "m_pFrame" member (set by calling SetSite) is a frame window. If it is not, the code gets the client rect and sends a WM_SIZE message to the m_pFrame member.

Since the client rect is obtained from the m_pFrame, sending WM_SIZE is apparently not being done to actually change the size of the window. So what is the purpose of sending the WM_SIZE message?

In case you are wondering why I care, I am trying to figure out why the popup menu that TrackPopupMenuEx (on CCommandBars) sometimes results in a failure to properly update the area under the menu once it is dismissed. Changing my Vista display settings seems to affect the update issue. Perhaps this is a "trick" to invalidate the site window? To what purpose?

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rdhd Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2007 Location: United States Status: Offline Points: 899	Post Options Post Reply Quote rdhd Report Post Thanks(0) Quote Reply Topic: CXTPCommandBars::RecalcFrameLayout question Posted: 24 July 2009 at 4:54pm
	In RecalcFrameLayout, the method is checking to see if the "m_pFrame" member (set by calling SetSite) is a frame window. If it is not, the code gets the client rect and sends a WM_SIZE message to the m_pFrame member. Since the client rect is obtained from the m_pFrame, sending WM_SIZE is apparently not being done to actually change the size of the window. So what is the purpose of sending the WM_SIZE message? In case you are wondering why I care, I am trying to figure out why the popup menu that TrackPopupMenuEx (on CCommandBars) sometimes results in a failure to properly update the area under the menu once it is dismissed. Changing my Vista display settings seems to affect the update issue. Perhaps this is a "trick" to invalidate the site window? To what purpose?