## Presentation Device Driver Reference for OS/2

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### GreGetPageViewport Parameter - prclViewport

prclViewport (PRECTL) - input Pointer to page viewport boundaries.

This is a RECTL structure in device coordinates:

xLeft Minimum x-coordinate of viewport
yBottom Minimum y-coordinate
xRight Maximum x-coordinate of viewport
yTop Maximum y-coordinate

Boundaries are inclusive at the bottom-left corner, and exclusive at the top-right corner.