Returns a LogicalPoint that results from subtracting the width and height of a LogicalSize structure from the X and Y coordinates of the LogicalPoint structure, respectively.
The unit of measurement of the new LogicalPoint is the same as the unit of measurement of the passed LogicalPoint. The X-Coordinate of the new LogicalPoint equals the subtraction of the Width property of the passed LogicalSize from the X-Coordinate of the passed LogicalPoint, i.e. new X = X - Width. The Y-Coordinate of the new LogicalPoint equals the subtraction of the Height property of the passed LogicalSize from the Y-Coordinate of the passed LogicalPoint, i.e. new Y = Y - Height.
This example subtracts the point structure by size structure (offset).