CDC::ScaleWindowExt

Modifies the window extents relative to the current values.

virtual CSize ScaleWindowExt(
   int xNum,
   int xDenom,
   int yNum,
   int
yDenom );

Parameters

• xNum
  Specifies the amount by which to multiply the current x-extent.

• xDenom
  Specifies the amount by which to divide the result of multiplying the current x-extent by the value of the xNum parameter.

• yNum
  Specifies the amount by which to multiply the current y-extent.

• yDenom
  Specifies the amount by which to divide the result of multiplying the current y-extent by the value of the yNum parameter.

Return Value

The previous window extents (in logical units) as a CSize object.

Remarks

The formulas are written as follows:

xNewWE = ( xOldWE * xNum ) / xDenom

yNewWE = ( yOldWE * yNum ) / yDenom

The new window extents are calculated by multiplying the current extents by the given numerator and then dividing by the given denominator.

Requirements

Header: afxwin.h

See Also

Concepts

CDC Class

CDC Members

Hierarchy Chart

CDC::GetWindowExt

CSize Class