Re: Control Closing of Gtk::Dialog

[Jon Black <juan black gmail com>]

Robert Pearce wrote:
> On Sun, 15 Feb 2009, Murray Cumming <murrayc murrayc com> wrote :
> > On Sun, 2009-02-15 at 15:51 +0100, Jon Black wrote:
> > > I have a simple Gtk::Dialog with 3 text entry fields, a cancel button,
> > > and an ok button. I'd like the dialog to close whenever the user
> > > presses cancel, and when the user presses ok only if all the text
> > > entry fields contain text.
> <snip>
> > I think you can override on_response() to prevent run() from returning.
> > I forget the details.
> As an alternative (slight change to behaviour) you could hook up to 
> the "on change" signals of the text fields, and set the OK button's 
> sensitivity according to their new contents. Thus the OK button would 
> be greyed out until it's valid to press. It's a bit more work but some 
> might think it's a nicer user interface.
I did consider this method myself, but imagine the user enters incorrect 
information. You'd want to inform them. I suppose it could be done when 
the text is changed in a text box, but imagine a pop-up message when you 
leave a text-box? I'd find that annoying, so then the Ok button seems 
the better place.

Perhaps I don't need a modal dialog in this case, but it still leaves me 
with an unsettled feeling that the dialog class doesn't really give me 
simple control over when it's shown.