How to grab mouse cursor?

Java 2D
#1

Hello,

I saw that in LWJGL there’s a method like Mouse.grab() which will hide the system cursor, so you can use your own. How can I do this in standard Java?

#2

this is what I do for the fullscreen version of Goomba4K:


setCursor(getToolkit().createCustomCursor(new BufferedImage(1, 1, BufferedImage.TYPE_4BYTE_ABGR),new Point(0,0),""));

this just sets the cursor as transparent, but you can use your own custom image if you want.

check it out in the javadoc

#3

So I just use a 1px transparent image for the cursor, and draw the real (animated) cursor by myself?
So far I can’t seem to be able to load animated GIFs as cursors, so I’ll just implement that myself…

#4

Why not just change the cursor to the current frame of animation every time the cursor’s animation moves to the next frame? That should produce better code that having a 1 pixel cursor and then drawing your own cursor on top of it.

You could also consider setting the cursor to null instead of using a 1 pixel cursor, but that might stop the Component from receiving mouse events. (I’m not sure.)

#5

As the javadoc describes, “if this parameter is null then this component will inherit the cursor of its parent”
If it is a top-level Component, I believe it uses the system cursor.

Animating the cursor via repeated setCursor calls may not work well on all systems - though I must confess I havn’t tried it.

#6

You could make the cursor invisible and draw your own animated cursor manually by drawing a BufferedImage at the cursor position.

-JAW