CMFCColorBar::OnUpdateCmdUI
Called by the framework to enable or disable a user-interface item of a color bar control before the item is displayed.
virtual void OnUpdateCmdUI(
CFrameWnd* pTarget,
BOOL bDisableIfNoHndler
);
Parameters
[in] pTarget
Pointer to a window that contains a user-interface item to update.[in] bDisableIfNoHndler
TRUE to disable the user-interface item if no handler is defined in a message map; otherwise, FALSE.
Remarks
When a user of your application clicks a user-interface item, the item must know whether it should be displayed as enabled or disabled. The target of the command message provides this information by implementing an ON_UPDATE_COMMAND_UI command handler. Use this method to help process the command. For more information, see CCmdUI Class.
Requirements
Header: afxcolorbar.h