PATHMac OS 8 and 9 Developer Documentation > Human Interface Toolbox > Window Manager >

Programming With the Mac OS 8.5 Window Manager

RepositionWindow Constants

To specify the factors that determine how a window should be positioned, you supply one of the following WindowPositionMethod constants to the function RepositionWindow or in the BasicWindowDescription structure of a resource of type 'wind' . Do not confuse the WindowPositionMethod constants with the pre-Mac OS 8.5 Window Manager window positioning constants or use the WindowPositionMethod constants where the older constants are required (such as in the StandardAlert function or in 'WIND' , 'DLOG' , or 'ALRT' resources).

enum {
    kWindowCenterOnMainScreen                   = 0x00000001,
    kWindowCenterOnParentWindow                 = 0x00000002,
    kWindowCenterOnParentWindowScreen           = 0x00000003,
    kWindowCascadeOnMainScreen                  = 0x00000004,
    kWindowCascadeOnParentWindow                = 0x00000005,
    kWindowCascadeOnParentWindowScreen          = 0x00000006,
    kWindowAlertPositionOnMainScreen            = 0x00000007,
    kWindowAlertPositionOnParentWindow          = 0x00000008,
    kWindowAlertPositionOnParentWindowScreen    = 0x00000009
};
typedef UInt32 WindowPositionMethod;

Constant descriptions

kWindowCenterOnMainScreen
Center the window, both horizontally and vertically, on the screen that contains the menu bar.
kWindowCenterOnParentWindow
Center the window, both horizontally and vertically, on the parent window. If the window to be centered is wider than the parent window, its left edge is aligned with the parent window's left edge.
kWindowCenterOnParentWindowScreen
Center the window, both horizontally and vertically, on the screen containing the parent window.
kWindowCascadeOnMainScreen
Place the window just below the menu bar at the left edge of the main screen. Subsequent windows are placed on the screen relative to the first window, such that the frame of the preceding window remains visible behind the current window. The exact amount by which windows are offset depends upon the dimensions of the window frame under a given appearance.
kWindowCascadeOnParentWindow
Place the window a distance below and to the right of the upper-left corner of the parent window such that the frame of the parent window remains visible behind the current window. The exact amount by which windows are offset depends upon the dimensions of the window frame under a given appearance.
kWindowCascadeOnParentWindowScreen
Place the window just below the menu bar at the left edge of the screen containing the parent window. Subsequent windows are placed on the screen relative to the first window, such that the frame of the preceding window remains visible behind the current window. The exact amount by which windows are offset depends upon the dimensions of the window frame under a given appearance.
kWindowAlertPositionOnMainScreen
Center the window horizontally and position it vertically on the screen that contains the menu bar, such that about one-fifth of the screen is above it.
kWindowAlertPositionOnParentWindow
Center the window horizontally and position it vertically such that about one-fifth of the parent window is above it.
kWindowAlertPositionOnParentWindowScreen
Center the window horizontally and position it vertically such that about one-fifth of the screen containing the parent window is above it.
© 1999 Apple Computer, Inc. – (Last Updated 18 March 99)