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CControlBar::OnUpdateCmdUI 

This member function is called by the framework to update the status of the toolbar or status bar.


virtual void OnUpdateCmdUI(
   CFrameWnd* pTarget,
   BOOL bDisableIfNoHndler 
) = 0;

Parameters

pTarget

Points to the main frame window of the application. This pointer is used for routing update messages.

bDisableIfNoHndler

Flag that indicates whether a control that has no update handler should be automatically displayed as disabled.

To update an individual button or pane, use the ON_UPDATE_COMMAND_UI macro in your message map to set an update handler appropriately. See ON_UPDATE_COMMAND_UI for more information about using this macro.

OnUpdateCmdUI is called by the framework when the application is idle. The frame window to be updated must be a child window, at least indirectly, of a visible frame window. OnUpdateCmdUI is an advanced overridable.

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