判断点在矩形内！！(MFC)

/**//*
CRect::PtInRect

DetermineswhetherthespecifiedpointlieswithinCRect.
*/

BOOLPtInRect(
POINTpoint
)constthrow();

/**//*
Parameters
point
ContainsaPOINTstructureorCPointobject.

ReturnValue

NonzeroifthepointlieswithinCRect;otherwise0.

Remarks

ApointiswithinCRectifitliesontheleftortopsideoriswithinallfoursides.ApointontherightorbottomsideisoutsideCRect.

Note
Therectanglemustbenormalizedorthisfunctionmayfail.YoucancallNormalizeRecttonormalizetherectanglebeforecallingthisfunction.


Example
*/

CRectrect(5,5,100,100);
CPointpt1(35,50);
CPointpt2(125,298);

//thisistrue,becausept1isinsidetherectangle
ASSERT(rect.PtInRect(pt1));

//thisisNOTtrue,becausept2isoutsidetherectangle
ASSERT(!rect.PtInRect(pt2));

//notethattherightandthebottomaren'tinside
ASSERT(!rect.PtInRect(CPoint(35,100)));
ASSERT(!rect.PtInRect(CPoint(100,98)));

//butthetopandthe
ASSERT(rect.PtInRect(CPoint(5,65)));
ASSERT(rect.PtInRect(CPoint(88,5)));

//andthatPtInRect()worksagainstaPOINT,too
POINTpt;
pt.x=35;
pt.y=50;
ASSERT(rect.PtInRect(pt));
/*
SeeAlso

Reference
CRectClass
HierarchyChart
CRect::NormalizeRect
PtInRect

OtherResources
CRectMembers
*/