[fa.info-mac] Activating Scoll Bars

info-mac@uw-beaver (info-mac) (11/29/84)

From: olson@harvard.ARPA (Eric Olson)
I'm writing an application that needs scroll bars but doesn't use TextEdit.
All the examples I can find with scroll bars also use TE, which apparently
activates the scroll bars when needed.  Inside Mac is vague about how to
activate/deactivate a control: this seems to be done with the HiliteControl
call.  But HiliteControl works with a piece of the scroll bar (i.e., Thumb,
PageUp, PageDown, UpButton, and DownButton) at a time.  I tried highlighting
nothing and highlighting the thumb, neither of these had any effect.

As it stands, I get my scrollbar from a resource file, and it displays just
fine but the grey region remains white (i.e., deactivated) and FindControl
ignores all mousing in the scrollbar.

How do I activate a scroll bar without TextEdit?

-Eric.