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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| -
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
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LB_ADDSTRING
An application sends an LB_ADDSTRING message to add a string to a list box. If
the list box does not have the LBS_SORT style, the string is added to the end
of the list. Otherwise, the string is inserted into the list and the list is
sorted.
LB_ADDSTRING
wParam = 0; // not used; must be zero
lParam = (LPARAM) (LPCTSTR) lpsz; // address of string to add
Parameters
lpsz
Value of lParam. Points to the null-terminated string that is to be added.
If you create the list box with an owner-drawn style but without the
LBS_HASSTRINGS style, the value of the lpsz parameter is stored as item data instead of the string it would otherwise
point to. You can send the LB_GETITEMDATA and LB_SETITEMDATA messages to retrieve
or modify the item data.
Return Values
The return value is the zero-based index of the string in the list box. If an
error occurs, the return value is LB_ERR. If there is insufficient space to
store the new string, the return value is LB_ERRSPACE.
Remarks
If you create an owner-drawn list box with the LBS_SORT style but not the
LBS_HASSTRINGS style, the system sends the WM_COMPAREITEM message one or more times
to the owner of the list box to place the new item properly in the list box.
See Also
LB_DELETESTRING, LB_INSERTSTRING, LB_SELECTSTRING, WM_COMPAREITEM
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