## Presentation Device Driver Reference for OS/2

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### GreGetClipRects Parameter - prclBound

prclBound (PRECTL) - input Pointer to bounding rectangle in device or screen coordinates.

Pointer to a RECTL structure:

xLeft Minimum X-coordinate of rectangle
yBottom Minimum Y-coordinate
xRight Maximum X-coordinate of rectangle
yTop Maximum Y-coordinate

Only rectangles intersecting this bounding rectangle are returned. When this pointer is NULL, all rectangles in the region are enumerated. When this pointer is not NULL, each rectangle returned is the intersection of the bounding rectangle with a rectangle in the region.

If COM_TRANSFORM is set, the function expects the bounding rectangle to be in device coordinates. If COM_TRANSFORM is not set, the function expects the bounding rectangle to be in screen coordinates.