UIRoot design width

[Tatanan]

After reading several topics in this forum about this, I am figuring out it's not too easy to get the DESIGN width of UI Root.
I mean:
Normally on any widget you just make:

1. gameObject.GetComponent<UIWidget>().width

and you get the width. But it seems to me this doesn't work for UIRoot. If you make

1. GameObject("UI Root").GetComponent<UIPanel>().width

you don't get the design width but the screen width (at least width the lastest NGUI version).
I have to multiply this value by

1. GameObject.Find("UI Root").GetComponent<UIRoot>().manualHeight / Screen.height

So my doubt is:
Is this way to do it? Isn't there any value on UIRoot or UIPanel for the design width?

[ArenMook]

Screen.width * uiRoot.pixelSizeAdjustment.

[Tatanan]

Is that value like

1. uiRoot.manualHeight / Screen.height

?

[ArenMook]

Not really. Why ask that? Just look at the function. You have the code.

[Tatanan]

Yes, you're right. Your code is similar to mine but more complete.
About "why ask" is because I wanted to be sure I understood how it worked to avoid problems.
Now it's clear.
Thank you.