[Gnuplot-info] Checking the return of pause -1's button press

[Suresh G. <sgo...@ya...>]

Hello,

  The following command 
      
      pause -1 "Show this message"

  puts up a dialog box with buttons named OK and Cancel.
  I would like to branch based on whether the user pressed
  on OK or Cancel.  Can this be done and, if so, how?  

  (Help shows the use of "pause mouse key" followed by 
  checking for MOUSE_KEY, but I would like to use "pause -1 ["<msg>"]
  and check for press of the OK or Cancel button.)

  Thanks,

  --Suresh