pswp (PSWP)
This points to two SWP structures. The first SWP structure describes the entire new window state, whereas the second structure describes the entire old window state. The fl parameter of the first structure contains only those indicators corresponding to the state changes that occurred.
flAwp (ULONG)
The AWF_* flags specify the state change of the frame window.
The return value from the WM_ADJUSTWINDOWPOS message:
ulReserved (ULONG)