Release 3.3 Copyright ã1995 by NeXT Computer, Inc.  All Rights Reserved.

3.3 Release Notes  
Preferences

This file contains release notes for the 3.3, 3.2, 3.1, and 3.0 releases of Preferences. There were no changes for Release 3.3 or 3.2.

Notes Specific to Release 3.1

This bug of interest to developers was fixed in Release 3.1:

Reference:	31029

Problem:	A module won't load if it's linked with libdbkit_s or libnikit_s

Description:	Preferences couldn't load a module that referenced routines in the dbkit or nikit libraries. 

Notes Specific to Release 3.0

These notes were included with the Release 3.0 version of Interface Builder.   

New Features

The following new features have been added to Preferences since Release 2.0.

·	Display PreferencesÐThe color of the display's background can be set.

·	Localization PreferencesÐPreferences contains a new layout for 3.0.  The Localization layout provides control over all aspects of system localization.  The keyboard mapping, system language, and measurement units can be specified.

·	System PreferencesÐSeveral new font options have been added.

·	Dynamic layout loadingÐSupport has been added to allow loading of layouts into the Preferences application.  This feature is described briefly below and in more detail in /NextLibrary/Documentation/NextDev/GeneralRef/15_Preferences.

	Layouts are added by creating a directory for the new layout in /NextLibrary/Preferences, /LocalLibrary/Preferences, or ~/Library/Preferences, or by opening a .preferences file package from Workspace.  The name of the file package should correspond to the name of the layout.  The file package must contain at least two files, a tiff image, and an object module both with the same name as the directory.  Additionally an InterfaceBuilder file may be contained in a .lproj directory.  For an example look at the directory named Template.bproj in /NextApps/Preferences.  The directory /NextApps/Preferences.app/Template can be renamed to "Template.preferences" and opened from Workspace.  The  file package named "Template.preferences" contains the following files.

/NextApps/Preferences/Template.preferences/Template
/NextApps/Preferences/Template.preferences/Template.tiff
/NextApps/Preferences/Template.preferences/English.lproj/Template.nib

	The TIFF image file is the icon that will appear in the scrolling list of icons at the top of the Preferences window.
	
	The object module should contain a subclass of the object Layout and should be named after the layout.  The header for this object is located in apps/Preferences.h.  This class will be instantiated when the layout is loaded.  If your layout contains more than one mach object module then you should create a single object file using ld.  When creating the Mach-O you should use the "-r" option of ld to retain relocation symbols.  For example:
	
		ld	-r -o Template.o AnotherClass.o funcs.o Template.o 
		
	This would create a single Mach-O called Template.o that contained three individual Mach-O's, Template.o, AnotherClass.o, and funcs.o.  Note that the subclass of Layout must be specified as the last argument on the command line.