Legacy Document

Important: The information in this document is obsolete and should not be used for new development.

Inside Macintosh: Imaging With QuickDraw /

Chapter 3 - QuickDraw Drawing / QuickDraw Drawing Reference

Routines / Creating and Managing Rectangles

EmptyRect
To determine whether a rectangle is an empty rectangle, use the EmptyRect function.
FUNCTION EmptyRect (r: Rect): Boolean;
r
The rectangle to examine.

DESCRIPTION
The EmptyRect function returns TRUE if the rectangle that you specify in the r parameter is an empty rectangle, FALSE if it is not. A rectangle is considered empty if the bottom coordinate is less than or equal to the top coordinate or if the right coordinate is less than or equal to the left.