gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
aspectbin = aspect_bin_new();
button1 = gtk_button_new_with_label("Square");
button2 = gtk_button_new_with_label("Rectangle");
gtk_window_set_default_size(GTK_WINDOW(window), 400, 300);
aspectbin = aspect_bin_new();
button1 = gtk_button_new_with_label("Square");
button2 = gtk_button_new_with_label("Rectangle");