Method OnInitMenuPopup

ColorCop/ColorCopDlg.cpp:2317–2332

Dialog-based MFC applications do NOT automatically update menu UI state (checkmarks, radio items, enable/disable) the way frame windows do. CFrameWnd has a full command routing loop that calls CCmdUI::DoUpdate() for each menu item, but CDialog does not. Because ColorCop is a dialog-based app with a menu, we must manually iterate the menu items and invoke DoUpdate() so that ON_UPDATE_COMMAND_UI ha

// Without this loop, menu items will NOT reflect the current application
// state when the user opens a menu.
void CColorCopDlg::OnInitMenuPopup(CMenu* pMenu, UINT nIndex, BOOL bSysMenu) {
    // Preserve default MFC behavior (system menu handling, owner-draw, etc.)
    CDialog::OnInitMenuPopup(pMenu, nIndex, bSysMenu);

    // Manually trigger UI updates for each menu item.
    // This restores the behavior normally provided by CFrameWnd.
    CCmdUI cmdUI;
    cmdUI.m_pMenu = pMenu;
    cmdUI.m_nIndexMax = pMenu->GetMenuItemCount();

    for (UINT i = 0; i < cmdUI.m_nIndexMax; ++i) {
        cmdUI.m_nIndex = i;
        cmdUI.m_nID = pMenu->GetMenuItemID(i);
        cmdUI.DoUpdate(this, FALSE);
    }
}

void CColorCopDlg::OnUpdateOptionsAutocopytoclipboard(CCmdUI* pCmdUI) {
    pCmdUI->SetCheck(m_Appflags & AutoCopytoClip);