'Menu'에 해당되는 글 1건
- 2016.03.04 Using ON_UPDATE_COMMAND_UI in dialog window
2016. 3. 4. 10:17
Using ON_UPDATE_COMMAND_UI in dialog window
2016. 3. 4. 10:17 in link/window general
CAUSE
When a drop-down menu is displayed, the WM_INITMENUPOPUP message is sent prior to displaying the menu items. The MFCCFrameWnd::OnInitMenuPopup function iterates through the menu items and calls the update command UI handler for the item, if there is one. The appearance of each menu item is updated to reflect its state (enabled/disabled, checked/unchecked).
The update UI mechanism doesn't work for a dialog box-based application because CDialog has no OnInitMenuPopup handler and it uses CWnd's default handler, which does not call update command UI handlers for menu items.
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