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#define INCL_WINFRAMEMGR
 
WM_WINDOWPOSCHANGED
paswp = (PSWP) PVOIDFROMMP(mp1); /* pointer to array of SWP structures */
flReturn = MPFROMLONG(mp2);      /* return-value flag                  */
 
The WM_WINDOWPOSCHANGED message is sent whenever the size of a window
changes.
 
Parameter  Description
────────────────────────────────────────────────────────────────────────────
 
paswp      Low and high word of mp1. Points to an array of two SWP
           structures: the first SWP structure contains the new state of the
           window; the second SWP structure contains the previous state of
           the window.
 
flReturn   Specifies the return value of the WM_ADJUSTWINDOWPOS message; it
           is FALSE if SWP_NOADJUST was specified.
 
Comments
 
The entire window state is filled in both SWP structures; however, the fs
field of the first SWP structure contains only those bits that correspond to
the actual changes that occurred. For example, if a window is resized,
fields x and y contain the position of the window even though it did not
move, but the fs field does not contain the SWP_MOVE flag.
 
Example
 
This example processes the WM_WINDOWPOSCHANGED message and assigns the two
structures to pointers:
 
PSWP pswpNew, pswpOld;
 
case WM_WINDOWPOSCHANGED:
    pswpNew = PVOIDFROMMP(mp1);
    pswpOld = pswpNew + 1;
 
See Also
 
WinCreateWindow, WM_ADJUSTWINDOWPOS, WM_CALCVALIDRECTS
 
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