You will have to substitute some other external event for the right button click, and use that to invoke the unzoom (ChartZoom.PopZoomStack) method. You can add a button to the chart, or process a keyboard event. In the example below, the zoomObj object has been made global to the class, and placed inside the button click event.
private void button1_Click(object sender, EventArgs e)
{
zoomObj.PopZoomStack();
}
