Editor Scripts OnGUI()

Hi guys. Im curious. Assuming i have something simple such as a custom editor window with a toggle set up to turn on or off a light...

if im correct, the OnGUI happens with each action, for eg movement of the mouse on screen, etc.

So i noticed that Debug.Log will tell me with each stroke of the mouse over and over "lights off" after i toggle 'turn off' the lights, and i got to thinking, is it really running a routine each and every single frame OnGUI does something? Attempting to turn off all the lights again and again.... it just doesnt seem optimal, so i assume im doing something completely wrong.

thanks, bit newish here.

 

yes, that's correct, OnGui is ran every frame.

 

Yeah, it will assign fields every frame.
If you are using a public property to call a function, you should check whether the value has changed first.