Creates a new dialog box.
Widgets should not be packed into this #GtkWindow directly, but into the @vbox and @action_area, as described above.
Return: the new dialog as a #GtkWidget
ConstructionException GTK+ fails to create the object.
See Implementation
Creates a new dialog box.
Widgets should not be packed into this #GtkWindow directly, but into the @vbox and @action_area, as described above.
Return: the new dialog as a #GtkWidget