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Editorial Team
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Asked: 2026-05-31T04:27:25+00:00

I have been trying to develop a CustomButton class that extends MovieClip, however I

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I have been trying to develop a CustomButton class that extends MovieClip, however I am having problems. I have got this error:

ArgumentError: Error #1063: Argument count mismatch on
mkh.custombutton::CustomButton(). Expected 2, got 0. at
flash.display::Sprite/constructChildren() at flash.display::Sprite()
at flash.display::MovieClip()

I’ve tried to debug my code, but it says

“Cannot display source code at this location.”

I am not sure where is the problem, but I suppose it’s in the constructor:

public function CustomButton( buttonlabel:String, animationAR:Array,     active:Boolean=true, animated:Boolean = false, type:String = "free", group:int = 0 )

I would be very grateful if anyone helped me. Thank you.

EDIT2: I think I know why it’s not appearing, so nevermind.

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1 Answer

  1. Editorial Team

    I think I know what the problem is, now I hope I can explain to you clearly enough (English is not my first language). Did you by any chance make a graphic MovieClip in the Flash program and linked it to your CustomButton class? If so, be careful with the instances you might have on the stage, because when Flash creates the Sprites/Movieclips objects that are on the stage it calls their constructor without any parameters.

    To avoid this, either:

    • Set default values for all parameters in your CustomButtonClass (EDIT: which would solve your problem, but is not very good practice)

    • Use addChild to put instances of your Button onto the stage (I recommend this one)

    Hope this helps!

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