Re: problem with "set x11 {size WW,HH} {position XX,YY}"

[Ethan M. <merritt@u.washington.edu>]

On Friday 06 February 2009 00:45:40 Petr Mikulik wrote:

> > 3. New global variable current_x11_windowid should be placed in an .h + .c 
> >    file. Which one?
> 
> > That will probably not work.  There can be multiple x11 windows open at 
> > the same time, so there is no "current" one.  Since you can associate a 
> > window number with each one, however, we might be able to do:
> >       set term x11 5
> >       print TERM_X11_WINDOW_5_ID 
> 
> The current one is the current active one. It is the last one from "set term 
> x11". The value of GPVAL_TERM_WINDOWID is to be used by a front-end (such as 
> Octave) using gnuplot for drawings; thus, it can fetch the Window ID just 
> after the plot command.

But "set term x11 5" will not necessarily open a new window; it will re-use
the old window #5 if there is one.  So it will not necessarily trigger a
window creation event, and thus would not automatically update your proposed
*_CURRENT_* variable.  I suppose the terminal driver could maintain a list
of previously-created window ids.

-- 
Ethan A Merritt