Udostępnij za pośrednictwem


CRect::PtInRect

Determines whether the specified point lies within CRect.

BOOL PtInRect( 
   POINT point  
) const throw( );

Parameters

Return Value

Nonzero if the point lies within CRect; otherwise 0.

Remarks

A point is within CRect if it lies on the left or top side or is within all four sides. A point on the right or bottom side is outside CRect.

Note

The rectangle must be normalized or this function may fail. You can call NormalizeRect to normalize the rectangle before calling this function.

Example

CRect rect(5, 5, 100, 100);
CPoint pt1(35, 50);
CPoint pt2(125, 298);

// this is true, because pt1 is inside the rectangle
ASSERT(rect.PtInRect(pt1));

// this is NOT true, because pt2 is outside the rectangle
ASSERT(!rect.PtInRect(pt2));

// note that the right and the bottom aren't inside
ASSERT(!rect.PtInRect(CPoint(35, 100)));
ASSERT(!rect.PtInRect(CPoint(100, 98)));

// but the top and the left are inside
ASSERT(rect.PtInRect(CPoint(5, 65)));
ASSERT(rect.PtInRect(CPoint(88, 5)));

// and that PtInRect() works against a POINT, too
POINT pt;
pt.x = 35;
pt.y = 50;
ASSERT(rect.PtInRect(pt));   

Requirements

Header: atltypes.h

See Also

Reference

CRect Class

Hierarchy Chart

CRect::NormalizeRect

PtInRect

Other Resources

CRect Members