If this message has any of the values of the fl parameter of the SWP structure set, with the exception of the SWP_NOADJUST and SWP_NOREDRAW values, it is sent to the window procedure of the window whose position is changed.
This message is also sent if the return value from the WM_ADJUSTWINDOWPOS is not NULL.
param1 PSWP pswp /* SWP structures. */ param2 ULONG flAwp /* Adjust window position status indicators. */