4 GtkMessageDialog

A convenient message window

4.1 Overview

<gtk-message-dialog> presents a dialog with an image representing the type of message (Error, Question, etc.) alongside some message text. It's simply a convenience widget; you could construct the equivalent of <gtk-message-dialog> from <gtk-dialog> without too much effort, but <gtk-message-dialog> saves typing.

The easiest way to do a modal message dialog is to use gtk-dialog-run, though you can also pass in the ‘GTK_DIALOG_MODAL’ flag, gtk-dialog-run automatically makes the dialog modal and waits for the user to respond to it. gtk-dialog-run returns when any dialog button is clicked.

     
      dialog = gtk_message_dialog_new (main_application_window,
                                       GTK_DIALOG_DESTROY_WITH_PARENT,
                                       GTK_MESSAGE_ERROR,
                                       GTK_BUTTONS_CLOSE,
                                       "Error loading file '%s': %s",
                                       filename, g_strerror (errno));
      gtk_dialog_run (GTK_DIALOG (dialog));
      gtk_widget_destroy (dialog);

You might do a non-modal <gtk-message-dialog> as follows:

     
      dialog = gtk_message_dialog_new (main_application_window,
                                       GTK_DIALOG_DESTROY_WITH_PARENT,
                                       GTK_MESSAGE_ERROR,
                                       GTK_BUTTONS_CLOSE,
                                       "Error loading file '%s': %s",
                                       filename, g_strerror (errno));
     
      /* Destroy the dialog when the user responds to it (e.g. clicks a button) */
      g_signal_connect_swapped (dialog, "response",
                                G_CALLBACK (gtk_widget_destroy),
                                dialog);

4.2 Usage