ppswp (PSWP)
This points to a SWP structure.
The receiver of this message is expected to alter this SWP parameter to the appropriate values relative to the new position and/or size of its owner, whose new position and size is specified in a SWP structure in the ppswpOwner parameter.
ppswpOwner (PSWP)
This points to a SWP structure.
This represents the new position and size of the owner window.
ulReserved (ULONG)