/// <summary>
/// Form is closing. Dispose resources
/// </summary>
/// <param name="sender">event sender</param>
/// <param name="e">event arg</param>
private void NumbersScanner_FormClosing(object sender, FormClosingEventArgs e)
{
KeyStateTracker.FuncOff();
_scannerCommon.OnClosing();
_scannerCommon.Dispose();
}
