//-----
private void init()
{
med = new Mediator(pic); //create Mediator
commands = new Hashtable(); //and Hash table
//create the command objectsb
RectButton rbutn = new RectButton(med, tbar.Buttons[0]);
UndoButton ubutn = new UndoButton(med, tbar.Buttons[1]);
ClrButton clrbutn = new ClrButton(med);
med.registerRectButton(rbutn);
//add them to the hashtable using the button hash values
commands.Add(btRect.GetHashCode(), rbutn);
commands.Add(btUndo.GetHashCode(), ubutn);
commands.Add(btClear.GetHashCode(), clrbutn);
pic.Paint += new PaintEventHandler(paintHandler);
}
//-----
public void registerRectButton(RectButton rb)
{
rect = rb;
}