LM_DELETEALL

This message is sent to a list box control to delete all the items in the list box.

Syntax

param1
ULONG ulReserved;  /* Reserved value, should be 0. */

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

Parameters

ulReserved (ULONG) - input: Reserved value, should be 0.
ulReserved (ULONG) - input: Reserved value, should be 0.

Returns

rc (BOOL) - return

Success indicator.

TRUE: Successful completion.

FALSE: Error occurred.

Remarks

The list box control window procedure responds to this message by deleting all the items in the list box and by setting rc to TRUE.

Default Processing

The default window procedure does not expect to receive this message and, therefore, takes no action on it, other than to set rc to the default value of FALSE.