CRect::IsRectNull

BOOL IsRectNull( ) const;

Return Value

Nonzero if CRect’s top, left, bottom, and right values are all equal to 0; otherwise 0.

Remarks

Determines whether the top, left, bottom, and right values of CRect are all equal to 0. Differs from IsRectEmpty, which determines whether the rectangle is empty.

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See Also   CRect::IsRectEmpty, CRect::SetRectEmpty