IsRectEmpty

The IsRectEmpty function determines whether the specified rectangle is empty. A empty rectangle is one that has no area; that is, the coordinate of the right side is less than or equal to the coordinate of the left side, or the coordinate of the bottom side is less than or equal to the coordinate of the top side.

BOOL IsRectEmpty(
  CONST RECT *lprc   // pointer to structure with rectangle
);
 

Parameters

lprc

Pointer to a RECT structure that contains the logical coordinates of the rectangle.

Return Values

If the rectangle is empty, the return value is nonzero.

If the rectangle is not empty, the return value is zero.

Windows NT: To get extended error information, call GetLastError.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.
  Import Library: Use user32.lib.

See Also

Rectangles Overview, Rectangle Functions, EqualRect, PtInRect, RECT