[XForms] file selector with callback

[Michal Szymanski]

Hi,

I am a bit confused by the behavior of the file selector with a callback 
defined. I got confused playing with demos while giving a try to the 
newest version, 1.0.93sp1, namely "pmbrowse" which, when a directory is 
double-clicked, prints out an error message (as a directory like ".." is 
not a recognized xpm/xbm file, surely) but the file selector does not 
change the list of files. Only when I click "Dismiss" button, it shows 
the directory I changed to. Is that the expected behavior? If so,
how should the callback react to returned file being a directory to get 
the file selector refreshed without having to click Dismiss.

BTW, It seems to me rather strange that a "callbacked" file selector 
does not have "Return" button and text input field for entering file 
name from the keyboard. While the latter is arguable, the lack of Return 
button may be a real problem for users who have problems with operating 
the mouse (double click being the only way to select a file).

The manual only mentions the lack of text input field but not the 
"Return" button. Neither it says about "Dismiss" button. Instead there 
is something about the modality of the file selector. Frankly speaking, 
I do not understand the phrase even after consulting my dictionary and 
Wikipedia. Can anybody explain that to me in "basic English"? :-)

regards, Michal.

-- 
  Michal Szymanski (msz at astrouw dot edu dot pl)
  Warsaw University Observatory, Warszawa, POLAND