How to create an inspector settings window?

Questions & Answers
1

I’m creating a plugin that needs to be configured before using. I’ve created a standar EditorWindow with the configuration parameters, that works correctly, but it would be nice to create a settings windows that shows in the Inspector, like the settings windows of Unity3D itself; for example, a window like the one that shows up when you click in Edit/Project Settings/Editor menu item (attached screenshot)!
[20906-unity3d+inspector+sshot.png|20906]

Any idea how to implement this?

4

To get an inspector window like those of the Unity Editor, you will have to make your settings-object a ScriptableObject, then make a custom inspector for that class.

I feel these code snippets will convey more than several paragraphs of explanation:

using UnityEngine;
using UnityEditor;

[CustomEditor(typeof(Settings))]
public class SettingEditor : Editor {

	private Settings _target;

	[MenuItem("testt/testtt")]
	public static void Getter(){
    /* 
    ** You would naturally get the existing Settings rather 
    ** than create a new one. E.g. using 
    ** Resources.FindObjectsOfTypeAll or
    ** a manager that maintains a reference
    */
		Selection.activeObject = ScriptableObject.CreateInstance<Settings>();
	}

	void OnEnable(){
		_target = (Settings)target;
	}

	public override void OnInspectorGUI ()
	{
		_target.settingsValue = EditorGUILayout.IntField("Setting 1",_target.settingsValue);
	}

}


using UnityEngine;

public class Settings : ScriptableObject {
	public int settingsValue;
}
2

You’ll probably want to refer to this page from the docs: Unity - Manual: Editor Windows

Specifically this snippet here:

// Add menu item named "My Window" to the Window menu
	[MenuItem("Window/My Window")]
	public static void ShowWindow()
	{
		//Show existing window instance. If one doesn't exist, make one.
		EditorWindow.GetWindow(typeof(MyWindow));
	}

This will put your window in Window>My Window, and you can define what is in your window using OnGUI()

3

using UnityEditor;
using UnityEngine;

public class Settings : EditorWindow
{
    private int selected = 0;
    private string[] opts = new string[] { "Option1", "Option2" };
    private static Settings settings = null;

    void OnGUI()
    {
        GUILayout.Label("Version Control", EditorStyles.boldLabel,GUILayout.MinWidth(100));

        GUILayout.BeginHorizontal();
        GUILayout.Label("Mode", EditorStyles.boldLabel, GUILayout.MinWidth(100));
        selected = EditorGUILayout.Popup(selected, opts);
        GUILayout.EndHorizontal();
    }

    [MenuItem("Edit/My Tool/Settings")]
    static void GetWindow()
    {
        settings = GetWindow<Settings>();
    }
}

This will create a window with a label and a popup menu. The window is dock-able, so it is exactly like any other window in unitys editor.