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Question by kag359six · Aug 24, 2012 at 08:07 PM · c#classesinstances

Creating class instances

I created a class for a drop down menu, and i tried making an instance of it in another script (the drop down menu class is not attatched to anything). However unity tells me that i can only use AddComponent() to add a monobehaviour. Does this mean that i really cant make instances of my classes? My class takes an x and y position, and a length and width inside its constructor. Example:

                     DropWindow dw = new DropWindow(100,125,150,50);
                     dw.dropDownWindow();

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avatar image Eric5h5 · Aug 25, 2012 at 05:58 AM 0
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Is there any reason for your class to derive from $$anonymous$$onoBehaviour? If not, don't, then you can initialize it as usual. If it has to derive from $$anonymous$$onoBehaviour, then you must use AddComponent.

avatar image kag359six · Aug 25, 2012 at 04:33 PM 0
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I think it does have to be because that class references images that i need.

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Answer by Tct1856 · Aug 24, 2012 at 11:13 PM

You can, but only by using AddComponent, and not by calling constructor with new.

And your DropWindow should be derived from MonoBehavior.

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avatar image kag359six · Aug 25, 2012 at 12:42 AM 0
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it is derived from $$anonymous$$onoBehavior. Why cant i call a constructor with new? can you give me an example of how id do the same thing with AddComponent?

avatar image Tct1856 · Aug 25, 2012 at 05:29 AM 0
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This was answered several times in the past, for ex., http://answers.unity3d.com/questions/280738/monobehaviour-new-keyword.html , you set the needed parameters afterwards ins$$anonymous$$d of passing them to constructor

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