void operator -=( SIZE size );
void operator -=( POINT point );
Parameters
size
Contains a SIZE structure or CSize object.
point
Contains a POINT structure or CPoint object.
Remarks
The first overload subtracts a size from the CPoint.
The second overload subtracts a point from the CPoint.
In both cases, subtraction is done by subtracting the x (or cx) member of the right-hand operand from the x member of the CPoint and subtracting the y (or cy) member of the right-hand operand from the y member of the CPoint.
For example, subtracting CPoint(5, -7) from a variable which contains CPoint(30, 40) changes the variable to CPoint(25, 47).
CPoint Overview | Class Members | Hierarchy Chart
See Also CPoint::operator –, CPoint::operator +=, CPoint::Offset