Re: [Gimp-developer] When writing a GIMP Plugin using Python, can the Plugin display a GIMP based Dialog box informing the user if they haven't provided an argument?

[Michal Vašut <xvasutm gmail com>]

You should IMHO prevent performing an operation when the input is invalid.
Yes, it's definitely easier to throw an exception, but those are IMHO
rather to deal with some unexpected errors.

On Sat, May 11, 2019, 23:44 Ofnuts <ofnuts gmx com> wrote:

> If the plugin is for public use, gimp.message() is a better solution
> because it will display in a dialog box or in the Gimp message console
> depending on user preferences. You don't really need to drag in all the
> GTK support just to display an error message.
>
> On the other hand, I don't see how you pass a list of files to a
> plugin.. If this is a batch script, things are a bit different, but then
> there may be no UI at all, and the message would be better printed to
> the console.
>
> On 5/9/19 1:32 AM, Craig Sanders via gimp-developer-list wrote:
> > Ahhh. I didn't even think that it might be able to be done that way - but
> > your solution is exactly what I was looking for. Thankyou very much.
> >
> > I was thinking that there might be a GIMP Procedure such as;
> >
> >      pdb.display_dialog(...)
> >
> > or something similar.
> >
> > After I submitted my question, I found a snippet of Python code on the
> > Internet which did what I needed, but nowhere near as nicely as your
> > answer. When I modified this snippet of Python code, it looked as
> follows;
> > import gtk
> >
> > # A whole lot of code has been left out here!!!
> >
> >      errDialog = gtk.MessageDialog(
> >
> >                   None,
> >
> >                   0,
> >
> >                   gtk.MESSAGE_ERROR,
> >
> >                   gtk.BUTTONS_OK,
> >
> >                   "You must specify at least one file."
> >
> >                  )
> >
> >      errDialog.show_all()
> >
> >      errDialog.run()
> >
> > # And a whole lot of code has been left out here!!!
> >
> > Thanks once again for your assistance. It is most appreciated.
> >
> > On Thu, May 9, 2019 at 1:22 AM Carol Spears <carol spears gmail com>
> wrote:
> > > On Wednesday, May 8, 2019, Craig Sanders via gimp-developer-list <
> > > gimp-developer-list gnome org> wrote:
> > >
> > > > Hello.
> > > >
> > > > I am writing a GIMP Plugin using Python, and this Plugin expects to
> > > > receive
> > > > a list of files as one of its arguments. My question is, if the user
> > > > doesn't provide any files as arguments, can my Plugin display a GIMP
> based
> > > > Dialog box informing them of this?
> > > gimp.message(You did not provide files)
> > >
> > > The message part should be in quotes probably....
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