Adds a menu item to the pop-up menu that is associated with the button.
void AddSubItem(
CMFCRibbonBaseElement* pSubItem,
int nIndex=-1
);
Parameters
[in] pSubItem
Specifies a pointer to the new element to add.[in] nIndex
Specifies the index at which to add the element to the array of menu items of the button; -1 to add the element at the end of the array of menu items.
Requirements
Header: afxribbonbutton.h