在 CMainFRame 窗口中为 AFX_WM_ON_BEFORE_SHOW_RIBBON_ITEM_MENU 消息 (ON_REGISTERED_MESSAGE) 创建一个处理程序。
检查按钮的 ID。删除所有以前的项目并添加您想要的项目。
LRESULT CMainFrame::OnBeforeShowRibbonItemMenu(WPARAM,LPARAM lp)
{
CMFCRibbonBaseElement *pElement = reinterpret_cast<CMFCRibbonBaseElement*>(lp);
// Try to get our menu button
switch (pElement->GetID())
{
case ID_RIBBON_DROPDOWN_BUTTON:
{
CMFCRibbonButton *pButton = DYNAMIC_DOWNCAST(CMFCRibbonButton, pElement);
if (pButton)
{
// MY_LIST copntains members with the ID and the text: m_uiCmdId, m_strTitle
const MY_LIST &list = ....;
if (list.size()!=0)
{
pButton->RemoveAllSubItems();
for (it = list.begin(); it!=list.end(); ++it)
pButton->AddSubItem(new CSomeKindOfRibbonButton(it->m_uiCmdId, it->m_strTitle));
}
}
...