Question

I am trying to create a custom scrollbar and am using images as button.

For now a simple

I can handle the MouseLeftButtonDown and Up event just fine but what I’d like to do is while its held down, every so many millisecond trigger an event is fired.

I tried something like this but it isn’t quite working. Suggestions?

public delegate void Changed(RangeScrollButtonControl sender, int value);
public event Changed OnChanged;
private System.Threading.Timer Timer;

private void Image_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
    this.Timer = new System.Threading.Timer(Timer_Callback, null, 0, 100);
}

private void Image_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
    this.Timer = null;
}

private void Timer_Callback(object sender)
{
    if (this.OnChanged != null) 
    {
        this.OnChanged(this, 1);
    }
}

Answer 1

The piece of functionality you’re looking for is a RepeatButton, this will fire it’s Click event repeatedly while the mouse button is held down. You can configure the delay and the interval of the events.

You could then style this button to use the image at Silverlight Show

Hope this helps.