public FfbInterface(TesterForm dialog)
{
dlg = dialog;
joystick = dialog.joystick;
// FFB
#if false
#pragma warning disable 0618
if (!joystick.FfbStart(id))
{
throw new Exception(String.Format("Failed to start Forcefeedback on device {0}", id));
}
#pragma warning restore 0618
// Convert Form to pointer and pass it as user data to the callback function
GCHandle h = GCHandle.Alloc(dialog);
IntPtr parameter = (IntPtr)h;
// joystick.FfbRegisterGenCB(OnEffect, parameter);
joystick.FfbRegisterGenCB(OnEffectObj, dialog);
#endif
}