// Get feedback which matches the currently selected waveform in the dropdown.
// To get the feedback, the SimpleHapticsController's SupportedFeedback list must be traversed
// to see if a matching feedback is present.
// This is important because InkContinuous is the only Inking waveform required to be
// supported by every pen with haptics.
// If no matching feedback is found in the SupportedFeedback list, this method returns
// InkContinuous as a guaranteed fallback.
private SimpleHapticsControllerFeedback GetSelectedFeedbackOrFallback(out string message)
{
// Look up the waveform the user selected.
string name = (string)waveformComboBox.SelectionBoxItem;
ushort waveform = MainPage.WaveformNamesMap[name];
// See if the haptics controller supports the selected waveform.
SimpleHapticsControllerFeedback feedback = MainPage.FindSupportedFeedback(hapticsController, waveform);
if (feedback != null)
{
message = "Waveform set to " + name;
return(feedback);
}
// It does not. Use InkContinuous as a fallback.
message = name + " is not supported by this pen, so falling back to InkContinuous";
return(MainPage.FindSupportedFeedback(hapticsController, KnownSimpleHapticsControllerWaveforms.InkContinuous));
}