Closing a GUI.Window?

Hello!

I have searched in this forum and in the Unity documentation for information on how to close a created GUI.Window with a GUI.Button.

I would like to create simple popup windows for settings and help in an application. Then be able to close the popup window with a button.

Is it possible with GUI.Window? Or is it meant I should use the class EditorWindow for these kind of tasks?


Simplified example of what I would like to create:

Code (csharp):

1.  
2.  
3. /* Window example */
4.  
5. var windowRect : Rect = Rect (20, 20, 120, 50);
6.  
7. function OnGUI () {
8.     windowRect = GUI.Window (0, windowRect, WindowFunction, "My Window");
9. }
10.  
11. function WindowFunction (windowID : int) {
12.     // Button to close the window here
13.         if (GUI.Button (Rect (60, 25,50, 50), "Button")) {
14.        
15.                //Code that closes window here?
16.     }
17.  
18. }
19.  
20.  
21.  

/Johan, Sweden

 

Hi Johan,

This is one of those things where the Unity GUI tends to get you if (like me) you're used to retained mode GUIs. What Unity has is an immediate mode GUI, which means the whole UI gets redrawn and destroyed with every frame.

What you need to do so is set up a variable which indicates if the window should be drawn at all, and set this variable to FALSE if your "Close" button is pressed. Then OnGUI, check this variable before drawing the window.

Best,

 

Edit: Ricardo beat me to it as I was posting on the IRC channel and took too long to reply.

You should have a property of that script that controls whether the window is drawn or not, then your button toggles that value as necessary (I assume that there is some way to open the window as well). Example:

Code (csharp):

1. var windowOpen : boolean = true;
2. windowRect : Rect = Rect (20, 20, 120, 50);
3.  
4. function OnGUI () {
5.   if (windowOpen) {
6.     windowRect = GUI.Window (0, windowRect, WindowFunction, "My Window");
7.   }
8. }
9.  
10. function WindowFunction (windowID : int) {
11.   // Button to close the window here
12.   if (GUI.Button (Rect (60, 25,50, 50), "Button")) {
13.     windowOpen = false;    
14.   }
15. }

Or something like that, the above should be enough to get you going.

 

Ah..wonderful! Thanks Ricardo and Tom, it solved my problem!

I'm new to this GUI scripting and was looking for a function Window.Close()
with windowID as a parameter or something. :roll:

Thanks again for the fast replies!

/Johan

 

[Travel to 2019 version] You can also do:

Code (CSharp):

1. if (GUILayout.Button("Close")) {
2.         this.Close();
3. }

Assuming your class is an EditorWindow.