OnGUI updates several times a frame. Why?

[FLASHDENMARK]

Hi.

I noticed a few days ago that the OnGUI fuction updates way more than 1 time per frame. As a build in feature, why does it act that way? Like, would a update once a frame not be enough?

[DaveA]

As it says here: http://unity3d.com/support/documentation/ScriptReference/MonoBehaviour.OnGUI.html

see here:

http://unity3d.com/support/documentation/ScriptReference/Event.html

which leads here:

http://unity3d.com/support/documentation/ScriptReference/EventType.html

Basically, it may go through several phases (event type) for doing layout, input, render, etc.

[Eric5h5]

It depends on your code, but it has to do it at least twice because of getting the positions for things and then doing the actual layout. It’s not arbitrarily running the code more than once.