## Presentation Device Driver Reference for OS/2

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### GreBitblt Parameter - paptlPoint

paptlPoint (PPOINTL) - input Pointer to an array of (X, Y) coordinate pairs .

Pointer to an array of (X,Y) coordinate pairs that define the target and source rectangles. The coordinates, which can be passed as a pair of RECTL structures, define the bottom-left and top-right corners of the target and source rectangles (see previous parameter, cPoints, for exceptions).

    (xTgtBL, yTgtBL), (xTgtTR, yTgtTR), (xSrcBL, ySrcBL), (xSrcTR, ySrcTR)

When the source rectangle is totally or partially outside the source bit map (or device), the operation is implementation-dependent for that area ( that is, the programmer of the called presentation driver must decide what to do).

Note: When BBO_TARGWORLD is not set, the rectangles are noninclusive. That is, they include the left and lower boundaries in device units but not the top and right boundaries. When the bottom-left corner of a rectangle maps to the same device pel as the top-right corner, that rectangle is considered to be empty.

When BBO_TARGWORLD is set, the target rectangle is inclusive at all boundaries. The source is noninclusive.