Mouse wheel in text widget

[Jonathan Hseu <vomjom earthlink net>]

When using gtk+ _without_ GNOME components, scrolling through a text box with
a vscrollbar allows one to use the mouse wheel _on_ the scroll bar, but does
not allow it when the pointer is inside the text box.  Is this assumption true?
I will attempt to patch it later if someone can verify it.

The result of this (if you have a mouse with a wheel) can be seen when using
programs such as AbiWord or gnotepad+.

Jonathan Hseu