## Presentation Device Driver Reference for OS/2

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### GreDrawBits Parameter - cPoints

cPoints (LONG) - input Number of (X, Y) pairs in paptlPoint.

This count must be set to 4.

The operation is determined by comparing the sizes of the two rectangles:

Target<Source Compress the source rectangle into the target rectangle. The flOptions flags determine how eliminated rows and columns should be handled .

Target=Source Copy between equal rectangles.

Target>Source Stretch the source rectangle into the target rectangle. In this case, the call can be passed to the GreBitblt routine in the graphics engine.