From: Ian Hobson <NewGroups@...>
Date: 2003-12-07T07:42:14+09:00
Subject: Finding a panel's size and/or storing extra data with the panel.

Hi all,

I am trying to write (Ruby and Tk 8.3) a TkPanel containing two TkPanels
where the sash between the panels can be dragged by the mouse to move
the border between the panels.

I have my sub panels placed with 'width'=>-1 making a small gap between.
I have used bind to call procedures at the correct times. (And set up
'cursor'=>???  On the panels, so that is correct).

How can I find out the size of the panels, and convert the x,y to parent
panel coordinates, so I can calculate the new 'relheight'=> values?

  panel.height  gives me 0 for all heights ?????

What are the x and y passed into the do_motionY call here?

  @panel.bind('B1-Motion', proc{|x,y| do_motionY(x,y)}, "%x %y")

Are they screen co-ordinates? If so how can I get the top top of @Panel?

This effort is starting to look like there is a need for a decent TK in
Ruby book. TCL/Tk and Perl/Tk are all very well, but.... I don't know
them.

Regards - and thanks for your help.

Ian
-- 
Ian - posting to a Newsgroup.  Please remove everything to reply.