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  (LWJGL) Hide mouse cursor without Mouse.setGrabbed?  (Read 3208 times)
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Offline StonePickaxes

JGO Coder


Medals: 4
Projects: 2


Nathan Kramber


« Posted 2012-07-02 18:39:59 »

Is there a way to do it without calling Mouse.setGrabbed(true)? I want to hide the mouse only while inside the window. I still want to be able to use the exit button, or be able to move the cursor outside of the window.

Thanks,
 | Nathan

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Offline Rorkien
« Reply #1 - Posted 2012-07-02 18:56:59 »

You can always set the mouse cursor to a blank image while inside the container

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setCursor(Toolkit.getDefaultToolkit().createCustomCursor(new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB), new Point(0, 0), "cursor"));
Offline Cero
« Reply #2 - Posted 2012-07-02 19:02:02 »

Rorkien's answer isnt LWJGL, but he is right. Just use a blank cursor.

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Offline kappa
« League of Dukes »

JGO Kernel


Medals: 76
Projects: 15


★★★★★


« Reply #3 - Posted 2012-07-02 19:03:03 »

Yup, use the Mouse.setNativeCursor() method to set a blank cursor and you'll get the behaviour that you are looking for.
Offline Rorkien
« Reply #4 - Posted 2012-07-02 19:05:42 »

Oh, theres a cursor method on LWJGL?

Gee, i really gotta drop into it  Tongue
Offline StonePickaxes

JGO Coder


Medals: 4
Projects: 2


Nathan Kramber


« Reply #5 - Posted 2012-07-02 19:12:19 »

Yup, use the Mouse.setNativeCursor() method to set a blank cursor and you'll get the behaviour that you are looking for.

How do I just set it to be blank?

I tried just going

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      try {
         Mouse.setNativeCursor(new Cursor(0, 0, 0, 0, 0, null, null));
      } catch (LWJGLException e) {
         e.printStackTrace();
      }


but then I get this

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Exception in thread "main" java.lang.NullPointerException
   at org.lwjgl.BufferChecks.checkBufferSize(BufferChecks.java:188)
   at org.lwjgl.NondirectBufferWrapper.wrapBuffer(NondirectBufferWrapper.java:111)
   at org.lwjgl.input.Cursor.<init>(Cursor.java:89)
   at com.natekramber.Main.init(Main.java:56)
   at com.natekramber.Main.<init>(Main.java:36)
   at com.natekramber.Main.main(Main.java:21)


 | Nathan

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Offline Rorkien
« Reply #6 - Posted 2012-07-02 19:21:52 »

I dont think Cursor has that many arguments  Tongue
Anyways, you can try this using the method i posted with the LWGJL method (Im not sure as well)

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Mouse.setNativeCursor(Toolkit.getDefaultToolkit().createCustomCursor(new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB), new Point(0, 0), "cursor"));
Offline StonePickaxes

JGO Coder


Medals: 4
Projects: 2


Nathan Kramber


« Reply #7 - Posted 2012-07-02 19:24:24 »

I dont think Cursor has that many arguments  Tongue
Anyways, you can try this using the method i posted with the LWGJL method (Im not sure as well)

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Mouse.setNativeCursor(Toolkit.getDefaultToolkit().createCustomCursor(new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB), new Point(0, 0), "cursor"));


Cursor is a LWJGL class, too Smiley

The setNativeCursor method takes a LWJGL cursor, not a default Java one.

 | Nathan

Check out my website!
Offline Rorkien
« Reply #8 - Posted 2012-07-02 19:31:33 »

Hmph. Emo

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Cursor(int width, int height, int xHotspot, int yHotspot, int numImages, java.nio.IntBuffer images, java.nio.IntBuffer delays) 
          Constructs a new Cursor, with the given parameters.


Have you tried using width/height/numImages > 0? For a NPE it gotta be something like that.
Engage Trial & Error mode
Offline StonePickaxes

JGO Coder


Medals: 4
Projects: 2


Nathan Kramber


« Reply #9 - Posted 2012-07-02 19:36:15 »

Hmph. Emo

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Cursor(int width, int height, int xHotspot, int yHotspot, int numImages, java.nio.IntBuffer images, java.nio.IntBuffer delays) 
          Constructs a new Cursor, with the given parameters.


Have you tried using width/height/numImages > 0? For a NPE it gotta be something like that.
Engage Trial & Error mode


Yep.

I'm assuming it's the last two parameters that are causing problems, but I don't really know how to fix that.

 | Nathan

EDIT: Well, I just found the answer here from princec! Thanks for helping with my problem, even though you didn't even know it Wink

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