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Perform 2d CLEAR operation of rectangle with region, leaving result in region.
Source position: agraphics.pas line 2141
function ClearRectRegion( |
Reg: PRegion; |
Rect: PRectangle |
):LongBool; |
Reg |
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A pointer to Region structure |
Rect |
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A pointer to Rectangle structure |
Returns True if successful operation, returns False if ran out of memory
Clip away any portion of the region that exists inside of the rectangle. Leave the result in region.
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Perform 2d AND operation of rectangle with region, leaving result in region. |
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Perform 2d AND operation of one region with second region, leaving result in second region. |
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Perform 2d OR operation of rectangle with region, leaving result in region. |
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Perform 2d XOR operation of rectangle with region, leaving result in region |
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ClearRectRegionND |
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Perform 2d CLEAR operation of rectangle with region, leaving result in region. |
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Allocates memory for a new Region and initializes it to an empty Region. |