Time for action – fixing the scrolling delay

1. Reopen the Design mode view of the MapEditor window.

2. Double-click on the timer control in the Toolbox window to add a new instance to the MapEditor form. As with the ImageList control, the timer is not visible and will appear in the editor as an icon and label below the design window. Give the timer control the following properties:

   • Name: timerGameUpdate

   • Enabled: True

   • Interval: 20

3. Double-click on the timerGameUpdate control to generate a Tick event handler, and add the following code to it:

   Private Sub timerGameUpdate_Tick(sender As System.Object,e As System.EventArgs) Handles timerGameUpdate.Tick
   
     If hScrollBar1.Maximum < 0 Then
       FixScrollBarScales()
     End If
   
     game.Tick()
   
     If game.HoverCodeValue <> lblCurrentCode.Text Then
       lblCurrentCode.Text = game.HoverCodeValue
     End If
   End Sub

4. Execute the application. Draw a few tiles on the map, and use the scroll bars to verify that they function as expected.

What just happened?

Using the scroll...