Re: [gtk-list] Unidentified subject!

[Thomas Mailund <mailund mail1 stofanet dk>]

>>>>> "M" == M N S S K Pavan Kumar <pavan@iiit.net> writes:

 M> Hi, I have a gtkhbox of size two packed into a main window. Each
 M> block of gtk hbox had a widget, first part of the hbox had a
 M> textwidget packed into it and the second part has a drawing area
 M> packed into it. If a toggle button is pressed , textwidget is
 M> shown in the whole window, if another toggle button is pressed ,
 M> drawingarea is completely shown and if both are on , both are
 M> shown. Is there a way to do this.
	
Connect a signal handler to the toggle buttons, and show/hide the text
widget or drawing area there.

I've attached a program that shows the genral idea.

        /mailund



===File ~/src/gtk-snippets/show/show-hide.c=================
#include <gtk/gtk.h>

static void
toogle_text (GtkWidget *text)
{
  static gboolean b = TRUE;

  if (b) {
    gtk_widget_hide (text);
    b = FALSE;
  } else {
    gtk_widget_show (text);
    b = TRUE;
  }
}

static void
toogle_drawing_area (GtkWidget *da)
{
  static gboolean b = TRUE;

  if (b) {
    gtk_widget_hide (da);
    b = FALSE;
  } else {
    gtk_widget_show (da);
    b = TRUE;
  }
}


int
main (int argc, char *argv[])
{
  GtkWidget *win;
  GtkWidget *vbox, *hbox;
  GtkWidget *toggle;
  GtkWidget *text, *drawingarea;
  
  gtk_init (&argc, &argv);

  win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  
  vbox = gtk_vbox_new (FALSE, 0);
  gtk_container_add (GTK_CONTAINER (win), vbox);

  hbox = gtk_hbox_new (TRUE, 5);
  gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 5);

  text = gtk_text_new (NULL, NULL);
  gtk_box_pack_start (GTK_BOX (hbox), text, FALSE, FALSE, 5);

  drawingarea = gtk_drawing_area_new ();
  gtk_box_pack_start (GTK_BOX (hbox), drawingarea,
		      FALSE, FALSE, 5);

  hbox = gtk_hbox_new (TRUE, 5);
  gtk_box_pack_end (GTK_BOX (vbox), hbox, TRUE, TRUE, 5);

  toggle = gtk_toggle_button_new_with_label ("TEXT");
  gtk_signal_connect_object (GTK_OBJECT (toggle), "toggled",
			     GTK_SIGNAL_FUNC (toogle_text),
			     GTK_OBJECT (text));
  gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 5);

  toggle = gtk_toggle_button_new_with_label ("DRAWING AREA");
  gtk_signal_connect_object (GTK_OBJECT (toggle), "toggled",
			     GTK_SIGNAL_FUNC (toogle_drawing_area),
			     GTK_OBJECT (drawingarea));
  gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 5);

  gtk_widget_show_all (win);

  gtk_main ();

  return 0;
}
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