## Presentation Device Driver Reference for OS/2

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### GreScrollRect Parameter - paScrollRect

paScrollRect (LPScrollRectRef) - input Pointer to parameter block for this function. This block is defined as a SCROLLRECTREF structure:

StartRow Starting row relative to the bottom left of the LVB

StartCol Starting column in the logical video buffer of the character string to be output

RectWidth Width of the scroll rectangle

RectDepth Depth of the scroll rectangle

HorzMovement Number of columns to be scrolled

VertMovement Number of rows to be scrolled

Note: Positive values mean movement downward or to the right, negative values mean upward or to the left.

lpFillCell Pointer to a cell containing the character and attributes to be used for filling the tail of the scroll region. This pointer is only used when GreBitblt is used to implement this function. When this lpFillCell is passed as NULL, the logical video buffer has been updated. The handling routine then must call GreCharRect to update the display.