Finding Width/Height of Text

Is there an easy way of finding the width and height of text drawn using DrawText(), given its scale is effected by SetScale()? The only way I can think of would be using lines to find the edges of collision.

EDIT: And by width/height, I mean the pixel-length of a string, not the amount of characters.

TextWidth and TextHeight multiplied by the current scale?

Eh. Once again, I fail to find the most basic of functions. Thanks.