## Presentation Device Driver Reference for OS/2

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### GreDrawBits Parameter - paptlPoint

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

A pointer to a block 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 "cPoints" above for more information):

    (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 user must decide what to do.

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

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.