Returns the string associated with an item at a specified index in the list box of a combo box button that has a specified command ID.
static LPCTSTR GetItemAll(
   UINT uiCmd,
   int iIndex=-1 
);
Parameters
- [in] uiCmd 
 The command ID of a combo box button.
- [in] iIndex 
 The zero-based index of an item in the list box.
Return Value
A pointer to the item's string if the method was successful; otherwise, NULL if the index is invalid, a combo box button is not found, or if index is -1 and there is no selected item in the combo box.
Remarks
An index value of -1 returns the string of the item that is currently selected.
Requirements
Header: afxtoolbarcomboboxbutton.h