Re: Use a GtkMessageBox in a GThread under Win32

[Bob Caryl <bob fis-cal com>]

On Tue, 2005-01-04 at 16:31, Frédéric COIFFIER wrote:
> Hello,
>
> I would like to use a modal message box in a thread to indicate the end of a 
> treatment.
> I develop my application under Windows. I made the following code in the 
> GThread :
>
>     wnd->_end_dialog = gtk_message_dialog_new (GTK_WINDOW(wnd->_window),
>                                   GTK_DIALOG_DESTROY_WITH_PARENT,
>                                   GTK_MESSAGE_INFO,
>                                   GTK_BUTTONS_OK,
>                                   "The dump file was correctly saved as '%s'",
>                                   filename.data());
>
>     gtk_dialog_run (GTK_DIALOG (wnd->_end_dialog));
>     gtk_widget_destroy (wnd->_end_dialog);
>
> But when gtk_dialog_run is called, the windows freeze when the message box 
> appears.
> I tried to use gdk_threads_enter() and gdk_threads_enter() before and after 
> the previous code but in this case, the message box doesn't appear.
>
> I think I have a correct GThread initialisation in main() :
>
>  g_thread_init (NULL);
>  gdk_threads_init();
>
> I also find the following message about a similar problem :
> http://mail.gnome.org/archives/gtk-app-devel-list/2003-May/msg00171.html
> but I use gtk-2.4.x and glib-2.4.x
>
> Does anyone have a solution to make that ?
>
> Regards,
> Frédéric

Hi,

gtk_dialog_run() blocks all execution until the user responds, so don't
use it.  Just show the dialog and use a callback function to evaluate
user response and to ultimately destroy the dialog.

Bob Caryl
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