PreferenceItem Inherits from Attribute

The PreferenceItem attribute allows you to add preferences sections to the Preferences Window.

Note: This is an editor class. To use it you have to place your script in Assets/Editor inside your project folder. Editor classes are in the UnityEditor namespace so for C# scripts you need to add "using UnityEditor;" at the beginning of the script.

The PreferenceItem attribute turns any public static function into an OnGUI callback. Only static functions can use the PreferenceItem attribute.

public class OurPreferences {
    // Have we loaded the prefs yet
    private static var prefsLoaded : boolean = false;
    
    // The Preferences
    public static var boolPreference : boolean = false;
    
    // Add preferences section named "My Preferences" to the Preferences Window
    @PreferenceItem ("My Preferences")
    static function PreferencesGUI () {
        // Load the preferences
        if (!prefsLoaded) {
            boolPreference = EditorPrefs.GetBool ("BoolPreferenceKey", false);
            prefsLoaded = true;
        }
        
        // Preferences GUI
        boolPreference = EditorGUILayout.Toggle ("Bool Preference", boolPreference);
        
        // Save the preferences
        if (GUI.changed)
            EditorPrefs.SetBool ("BoolPreferenceKey", boolPreference);
    }
}

PreferenceItem

Creates a section in the Preferences Window called name and invokes the static function following it for the section's GUI.