We have a situation where the hardware Return button performs a certain action, However this action is also triggerd wher using the Return button on the SIP control.

Is there anyway to determine if the KeyPressEventArg has come from the SIP?

```
    /// <summary>
    /// Handles the Enter button being pressed as navigation to complete the signature capture
    /// </summary>
    /// <param name="e">The key event args to quaify what button was pressed.</param>
    public override void HandleKeyPress(KeyPressEventArgs e)
    {
        if (e.KeyChar == '\r') // and is not SIP '\r'
        {
            // need to handle only hard button not SIP
        }
    }

```

Many thanks for any enlightenment on this