The ThemeGrowDirection enumeration defines masks your application can use to specify the directions in which a window may be resized. You may use constants of type ThemeGrowDirection with the function DrawThemeStandaloneGrowBox to draw a size box and with the function GetThemeStandaloneGrowBoxBounds to obtain the bounding rectangle of a size box. The constants may be combined to set more than one direction of growth. The ThemeGrowDirection constants are available with Appearance Manager 1.1 and later.
enum {
kThemeGrowLeft = (1 << 0),
kThemeGrowRight = (1 << 1),
kThemeGrowUp = (1 << 2),
kThemeGrowDown = (1 << 3)
};
typedef UInt16 ThemeGrowDirection;