An application sends an LB_FINDSTRING message to find the first string in a list box that contains the specified prefix.
LB_FINDSTRING wParam = (WPARAM) indexStart; // item before start of search lParam = (LPARAM) (LPCTSTR) lpszFind; // search string address
Windows 95: The wParam parameter is limited to 16-bit values.
This means list boxes cannot contain more than 32,767 items. Although the
number of items is restricted, the total size in bytes of the items in a
listbox is limited only by available memory.
The return value is the index of the matching item, or LB_ERR if the search was unsuccessful.
If you create the list box with an owner-drawn style but without the LBS_HASSTRINGS style, this message returns the index of the item with a long value (supplied as the lParam parameter of the LB_ADDSTRING or LB_INSERTSTRING message) that matches the value supplied as the lpszFind parameter.
LB_ADDSTRING, LB_INSERTSTRING, LB_SELECTSTRING