Dave,
This has also been an annoyance for me for many years. (At least as long
as WildFire has been around... maybe longer)
I know that my scenario below doesn't directly answer your original
question. In short, I don't know how to get the splitter bar to default
to somewhere other than middle. Here is my situation and how I got around
it...
I have three items added to the RH side of my model tree splitter bar:
Feat#, Feat ID, and a parameter called PARTNAME. Sometimes I want to only
see the Feat# column, but other times I want to see all three. At the
same time, I don't want my model tree to take up my full second screen,
and when Pro/E launches the splitter bar always defaults to the center of
the tree which is never where I want it to be. So, as you can imagine, I
was constantly moving this splitter bar with the mouse and it became a real
pain.
The answer for me was mapkeys.
I created two "single key" mapkeys (for me its F10, and F11) that simply
move the splitter bar to the right (to show only one column), or move the
splitter bar back to the left (to show all three of my columns)
Good Luck
Bernie
Bernie Gruman
Owner / Designer / Builder
www.GrumanCreations.com