A.13. Reparent

  
function reparent_label(widget, new_parent)
{
  widget.reparent(new_parent);
}


function changed_parent_message(child, func_data)
{
  if (!child.parent)
    princ("I lost my parent.\n");
  else
    princ("My new parent is a ", class_name(child.parent), ", named ", child.parent.name,". My data is: ", func_data, "\n");
}


function create_reparent ()
{
  local	box1, box2, box3, box4, separator, button, frame;
  
  win_reparent = new (GtkWindow);
  win_reparent.signal ("destroy", #win_reparent = nil);
  win_reparent.title = "reparent";
  win_reparent.border_width = 0;
  
  box1 = new (GtkVBox);
  win_reparent.add (box1);
  
  box2 = new (GtkHBox);
  box2.spacing = 5;
  box2.border_width = 10;
  box1.pack_start (box2, TRUE, TRUE, 0);
  
  label = new(GtkLabel);
  label.set_text("Hello World");
  
  frame = new(GtkFrame);
  frame.label = "Frame 1";
  box2.pack_start(frame, TRUE, TRUE, 0);
  
  box3 = new(GtkVBox);
  box3.spacing = 5;
  box3.border_width = 5;
  box3.name = "Left Box";
  frame.add(box3);
  
  button = new(GtkButton);
  button.label = "switch";
  button.signal("clicked", `reparent_label(@label, @box3));
  button.user_data = label;
  box3.pack_start(button, FALSE, TRUE, 0);
  
  box3.pack_start(label, FALSE, TRUE, 0);
  label.signal("parent_set", `changed_parent_message(@label, 42));
  
  frame = new(GtkFrame);
  frame.label = "Frame 2";
  box2.pack_start(frame, TRUE, TRUE, 0);
  
  box4 = new(GtkVBox);
  box4.spacing = 5;
  box4.border_width = 5;
  box4.name = "Right Box";
  frame.add(box4);
  
  button = new(GtkButton);
  button.label = "switch";
  button.signal("clicked", `reparent_label(@label, @box4));
  button.user_data = label;
  box4.pack_start(button, FALSE, TRUE, 0);
  
  separator = new(GtkHSeparator);
  
  box1.pack_start(separator, FALSE, TRUE, 0);
  box2 = new(GtkVBox);
  box2.spacing = 10;
  box2.border_width = 10;
  box1.pack_start(box2, FALSE, TRUE, 0);
  
  button = new (GtkButton);
  button.label = "close";
  button.signal ("clicked", `(@win_reparent).destroy());
  box2.pack_start (button, TRUE, TRUE, 0);
  button.can_default = TRUE;
  button.grab_default();
  
  win_reparent.show_all();
  win_reparent;
}

function main ()
{
  local window, win_reparent;
  TRUE=1;
  FALSE=0;
  window = create_reparent ();
  window.signal ("destroy", #exit_program(0));
  init_ipc("reparent", "reparentq");
  gtk_main ();
}