User Defaults Summary for GNUstep Libraries $Revision$ $Date$ Defaults Summary

This document contains a summary of available user default values that one can set to control the operation of the GNUstep libraries.

GUI Library Defaults

Below is a list of defaults used to control the gnustep-gui library.

GSBackend

A string containing the name of the backend bundle to use for display specific GUI handling. The default is "libgnustep-xgps.bundle". Currently the only other choice is "libgnustep-xdps.bundle".

GSBrowserCellFontify

A boolean value, NO by default. When the feature is on, NSBrowserCell draws non-leaf cells in bold system font. For example, when the feature is on, in a SavePanel (or OpenPanel), directory entries are drawn in bold, while simple files are drawn in non bold.

GSSavePanelShowProgress

A boolean value, NO by default. When the feature is on, the save panel and its subclasses (such as the open panel) displays "Reading Directory ***.." (progressively adding dots) in the window titlebar while reading very big directories (more than 100 entries). This is meant to make things friendlier for slow computers. Not well tested.

GSLogWorkspaceTimeout

A boolean value that defaults to NO. This is a obscure and probably not useful default. NSWorkspace tries to receive distributed notifications, but if a distributed objects server cannot be found or some other error occurs, it raises an exception which normally terminates the program. Setting this default causes NSWorkspace to just log the problem without raising an exception.

NSInterfaceStyleDefault

A string describing the interface style. Setting this may change various aspects of how the library draws elements and responds to user interaction. See the NSInterfaceStyle documentation for more information.

NSMenuInterfaceStyle

An interface style specific to menu operation. If not set the NSInterfaceStyleDefault value is used.

NSCommandKeys

A dictionary of command key equivalents for menu items. The key contains the title of the menu item and the value is the command key equivalent. For instance, one might set the command key for the menu item "Copy" to "C".

NSHost

Used by NSPasteboard to find the host on which the pasteboard server is running.

NSMeasurementUnit

A string describing the measurement unit for rulers (see the NSRulerView class documentation). The default is Centimeters. Other possible values are Inches, Points, and Picas.

System Colors

System colors may be set using the defaults system. System colors are standard colors for drawing various GUI elements, such as buttons, text, scroller, etc. The value is a dictionary describing the color. The keys that can be used for setting the system colors are described in the documentation for NSColor.

System Fonts

System Fonts may be set using the defaults system. System fonts are standard fonts for drawing text in GUI elements. They include NSBoldFont, for instance. The value is the name of the font to use. There is also a cooresponding size key (e.g. NSBoldFontSize) for specifying the point size of the font. The keys that can be used for setting the system fonts are described in the documentation for NSFont.

XGPS Backend Defaults

Below is a list of defaults used to control the gnustep-xgps backend. These defaults generally control system specific display and user interaction options which may not be available on all systems.

NSDefaultVisual

An integer that specifies the X-Windows visual class to use in the application. For instance one could display the application using the PsuedoColor visual class by setting the value to the id of this class. The default is the X-Windows default visual class.

NSColorsPerChannel

An integer which limits the maximum number of colors to display, per channel. For a psuedo-color display, this would limit the total number of colors that the application could use (normally 256). For a true-color display, this would limit the range of red, green, and blue values that could be used.

GSBorderedBorderlessWindows

A boolean value which defaults to NO. Some Window Managers and/or X servers put a border around windows that are supposed to be borderless. Set this to YES if you have odd problems of menus/windows moving when you click on them.

GSFontAntiAlias

A boolean value which defaults to NO. If set to YES and the X-Windows system has the XFT extension, then the application will use anti-aliased fonts as provided by the X-Windows system.

GraphicCompositing

A boolean value which defaults to NO. If set to YES, then the application uses various tricks to get alpha colors to work when compositing images. This may slow down drawing of images, but it is generally recommended anyway, particularly on fast systems.

Keyboard Modifiers

The OPENstep specification requires 3 main different keyboard modifiers: CONTROL, COMMAND and ALTERNATE. Some systems may not have these set up correctly. You can changed the defaults with the default keys.

GSFirstControlKey GSSecondControlKey GSFirstCommandKey GSSecondCommandKey GSFirstAlternateKey GSSecondAlternateKey

Default values are respectively:

Control_L Control_R Alt_L NoSymbol Alt_R NoSymbol

This is described more completely in the GUI documentation.

UseWindowMakerIcons

A boolean value which defaults to YES. If set to YES then icon windows are controlled by the window manager, otherwise they are controlled by the GNUstep application.

XGPS-Shm

A boolean value which defaults to YES (as long as shared memory is available). If set to NO, shared memory is not used for various display specific operations.