Time for action – adding event handlers

1. Add the following directive to the Game1 class of the Level Editor project:

   using Tile_Engine;

2. Add the following declaration to the declarations area of the Game1 class of the Level Editor project:

   System.Windows.Forms.Control gameForm;

3. Add the following code to the constructor of the Game1 class:

   gameForm = 
       System.Windows.Forms.Control.FromHandle(this.Window.Handle);
   gameForm.VisibleChanged +=new EventHandler(gameForm_VisibleChanged);
   gameForm.SizeChanged +=new EventHandler(pictureBox_SizeChanged);

4. Add the two event handlers to the Game1 class:

   private void gameForm_VisibleChanged(object sender, EventArgs e)
   {
       if (gameForm.Visible == true)
           gameForm.Visible = false;
   }
   
   void pictureBox_SizeChanged(object sender, EventArgs e)
   {
       if (parentForm.WindowState !=
           System.Windows.Forms.FormWindowState.Minimized)
       {
           graphics.PreferredBackBufferWidth = pictureBox.Width;
           graphics.PreferredBackBufferHeight = pictureBox.Height...