Set-window-position structure.

typedef struct _SWP {
  ULONG     fl;                /*  Options. */
  LONG      cy;                /*  Window height. */
  LONG      cx;                /*  Window width. */
  LONG      y;                 /*  Y-coordinate of origin. */
  LONG      x;                 /*  X-coordinate of origin. */
  HWND      hwndInsertBehind;  /*  Window behind which this window is placed. */
  HWND      hwnd;              /*  Window handle. */
  ULONG     ulReserved1;       /*  Reserved value; must be 0. */
  ULONG     ulReserved2;       /*  Reserved value; must be 0. */
} SWP;

typedef   SWP   * PSWP ;