WinQueryLboxItemTextLength - Remarks

This macro is defined as:

#define WinQueryLboxItemTextLength(hwndLbox, index)  \
        ((SHORT)WinSendMsg(hwndLbox,                  \
                           LM_QUERYITEMTEXTLENGTH,    \
                           MPFROMSHORT(index),       \
                           (MPARAM)NULL))

This macro requires the existence of a message queue.