Creating tooltips

I'm creating a game and when I hover over something such as a button I would like a tooltip to be displayed, does anyone know how to do this?

 

What button are you using ? The old GUI or the new UI that was released with Unity 4.6 ?

 

The new GUI, I'm currently using version 5 of Unity

 

Since many small thinks are already asked. A quick search can find many things. Currently 5. Position in the unity "search forums" with only one keyword "tooltips"
http://forum.unity3d.com/threads/question-dynamic-tooltips.268172/#post-1780687
Should give a nice starting point.

Have reread my thread. Additionally you need to know what and how you want it to show.
So you'll need a container(Canvas) in which you put your tooltip content and a fade in/out of the tooltip
http://forum.unity3d.com/threads/how-to-tween-alpha-of-an-image.263925/#post-1785362
To detect when your mouse hovers over a gameobject you need
OnPointerEnter and OnPointerExit.
Just put IPointerEnterHandler, IPointerExitHandler next to MonoBehaviour. So instead of

Code (csharp):

1. public class Tooltip : MonoBehaviour {}

you write

Code (csharp):

1. public class Tooltip : MonoBehaviour , IPointerEnterHandler, IPointerExitHandler{
2. public void OnPointerEnter(PointerEventData eventData) {//FadeIn}
3. public void OnPointerExit(PointerEventData eventData) {//FadeOut}
4. }

and can use the OnPointerEnter/exit method

If you don't want to write everything you can try one of the extension methods provided by other users. http://forum.unity3d.com/threads/tooltips.309636/#post-2015245