CM COLLAPSETREE

This message causes one parent item in the tree view to be collapsed. Note: If the CCS_MINIRECORDCORE style bit is specified when a container is created, then MINIRECORDCORE should be used instead of RECORDCORE and PMINIRECORDCORE should be used instead of PRECORDCORE in all applicable data structures and messages.

Syntax

param1
PRECORDCORE pRecord;   /* Pointer to the RECORDCORE structure that is to be collapsed. */

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

Parameters

pRecord (PRECORDCORE) - Input

Pointer to the RECORDCORE structure that is to be collapsed.

If this is NULL, all expanded parent items are collapsed.

Note: If the CCS_MINIRECORDCORE style bit is specified when a container is created, then MINIRECORDCORE should be used instead of RECORDCORE and PMINIRECORDCORE should be used instead of PRECORDCORE in all applicable data structures and messages.

ulReserved (ULONG) - Input

Reserved value, should be 0.

Returns

rc (BOOL) - returns

Success indicator.

TRUE: The item was successfully collapsed.

FALSE: An error occurred. The WinGetLastError function may return the following error:

PMERR_INVALID_PARAMETERS.

Remarks

None.

Default Processing

The default window procedure does not expect to receive this message and therefore takes no action on it other than to return FALSE.