GTK+ 2.0 Tutorial
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# Button Boxes

Button Boxes are a convenient way to quickly layout a group of buttons. They come in both horizontal and vertical flavours. You create a new Button Box with one of the following calls, which create a horizontal or vertical box, respectively:

    GtkWidget *gtk_hbutton_box_new( void );

    GtkWidget *gtk_vbutton_box_new( void );

Buttons are added to a Button Box using the usual function:

        gtk_container_add (GTK_CONTAINER (button_box), child_widget);

Here's an example that illustrates all the different layout settings for Button Boxes.

    #include <gtk/gtk.h>

    /* Create a Button Box with the specified parameters */
    static GtkWidget *create_bbox( gint  horizontal,
                                   char *title,
                                   gint  spacing,
                                   gint  child_w,
                                   gint  child_h,
                                   gint  layout )
    {
      GtkWidget *frame;
      GtkWidget *bbox;
      GtkWidget *button;

      frame = gtk_frame_new (title);

      if (horizontal)
        bbox = gtk_hbutton_box_new ();
      else
        bbox = gtk_vbutton_box_new ();

      gtk_container_set_border_width (GTK_CONTAINER (bbox), 5);
      gtk_container_add (GTK_CONTAINER (frame), bbox);

      /* Set the appearance of the Button Box */
      gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), layout);
      gtk_box_set_spacing (GTK_BOX (bbox), spacing);
      /*gtk_button_box_set_child_size (GTK_BUTTON_BOX (bbox), child_w, child_h);*/

      button = gtk_button_new_from_stock (GTK_STOCK_OK);
      gtk_container_add (GTK_CONTAINER (bbox), button);

      button = gtk_button_new_from_stock (GTK_STOCK_CANCEL);
      gtk_container_add (GTK_CONTAINER (bbox), button);

      button = gtk_button_new_from_stock (GTK_STOCK_HELP);
      gtk_container_add (GTK_CONTAINER (bbox), button);

      return frame;
    }

    int main( int   argc,
              char *argv[] )
    {
      static GtkWidget* window = NULL;
      GtkWidget *main_vbox;
      GtkWidget *vbox;
      GtkWidget *hbox;
      GtkWidget *frame_horz;
      GtkWidget *frame_vert;

      /* Initialize GTK */
      gtk_init (&argc, &argv);

      window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
      gtk_window_set_title (GTK_WINDOW (window), "Button Boxes");

      g_signal_connect (G_OBJECT (window), "destroy",
    		    G_CALLBACK (gtk_main_quit),
    		    NULL);

      gtk_container_set_border_width (GTK_CONTAINER (window), 10);

      main_vbox = gtk_vbox_new (FALSE, 0);
      gtk_container_add (GTK_CONTAINER (window), main_vbox);

      frame_horz = gtk_frame_new ("Horizontal Button Boxes");
      gtk_box_pack_start (GTK_BOX (main_vbox), frame_horz, TRUE, TRUE, 10);

      vbox = gtk_vbox_new (FALSE, 0);
      gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);
      gtk_container_add (GTK_CONTAINER (frame_horz), vbox);

      gtk_box_pack_start (GTK_BOX (vbox),
    	   create_bbox (TRUE, "Spread (spacing 40)", 40, 85, 20, GTK_BUTTONBOX_SPREAD),
    		      TRUE, TRUE, 0);

      gtk_box_pack_start (GTK_BOX (vbox),
    	   create_bbox (TRUE, "Edge (spacing 30)", 30, 85, 20, GTK_BUTTONBOX_EDGE),
    		      TRUE, TRUE, 5);

      gtk_box_pack_start (GTK_BOX (vbox),
               create_bbox (TRUE, "Start (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_START),
    		      TRUE, TRUE, 5);

      gtk_box_pack_start (GTK_BOX (vbox),
    	   create_bbox (TRUE, "End (spacing 10)", 10, 85, 20, GTK_BUTTONBOX_END),
    		      TRUE, TRUE, 5);

      frame_vert = gtk_frame_new ("Vertical Button Boxes");
      gtk_box_pack_start (GTK_BOX (main_vbox), frame_vert, TRUE, TRUE, 10);

      hbox = gtk_hbox_new (FALSE, 0);
      gtk_container_set_border_width (GTK_CONTAINER (hbox), 10);
      gtk_container_add (GTK_CONTAINER (frame_vert), hbox);

      gtk_box_pack_start (GTK_BOX (hbox),
               create_bbox (FALSE, "Spread (spacing 5)", 5, 85, 20, GTK_BUTTONBOX_SPREAD),
    		      TRUE, TRUE, 0);

      gtk_box_pack_start (GTK_BOX (hbox),
               create_bbox (FALSE, "Edge (spacing 30)", 30, 85, 20, GTK_BUTTONBOX_EDGE),
    		      TRUE, TRUE, 5);

      gtk_box_pack_start (GTK_BOX (hbox),
               create_bbox (FALSE, "Start (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_START),
    		      TRUE, TRUE, 5);

      gtk_box_pack_start (GTK_BOX (hbox),
               create_bbox (FALSE, "End (spacing 20)", 20, 85, 20, GTK_BUTTONBOX_END),
    		      TRUE, TRUE, 5);

      gtk_widget_show_all (window);

      /* Enter the event loop */
      gtk_main ();

      return 0;
    }

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