## Presentation Device Driver Reference for OS/2

[prev][next][parent][TOC]

### SCA

Screen change area data structure.

    typedef struct _SCA {

      SCA       pscaNext;                                             /*  Linked list pointer. */

      ULONG     cRects;                                               /*  Number of rectangles in area. */

      RECTL     arcl[MAX_SCA_RECTS+1];         /*  Rectangle dimensions. */

      ULONG     aulRectSize[MAX_SCA_RECTS+1];  /*  Cached rectangle sizes. */

    } SCA;

    typedef   SCA   * PSCA ;