View source for LM QUERYITEMHANDLE

{{DISPLAYTITLE:LM_QUERYITEMHANDLE}}
This message returns the handle of the indexed item of the list box control.

==Syntax==
<pre>
param1
SHORT sItemIndex; /* Item index. */

param2
ULONG ulReserved; /* Reserved value, should be 0. */
</pre>

==Parameters==
;sItemIndex ([[SHORT]]) - input: Item index.
;ulReserved ([[ULONG]]) - input: Reserved value, should be 0.

==Returns==
;ulItem ([[ULONG]]) - return: Item handle.
::0: The indexed item does not exist.
::Other: Item handle.

==Remarks==
The meaning of the item handle is defined by the application. It may, for
example, be a pointer to an application defined data structure.

Item handles are initialized to NULLHANDLE when an item is created. The
list box control window procedure responds to this message by setting '''ulItem''' to the
handle of the item whose index is specified by '''sItemIndex'''.

==Default Processing==
The default window procedure does not expect to receive this message and
therefore takes no action on it, other than to set '''ulItem''' to the default value of
NULLHANDLE.
The item handle is initialized to NULLHANDLE.

[[Category:Messages]]