void InkingArea_PointerPressed(object sender, Windows.UI.Xaml.Input.PointerRoutedEventArgs e)
{
// Make sure no pointer is already inking (we allow only one 'active' pointer at a time)
if (pointerId == -1)
{
var pointerPoint = e.GetCurrentPoint(InkingArea);
rootPage.NotifyUser(" ", SDKTemplate.NotifyType.StatusMessage);
// Determine ink manipulation mode
switch (Helpers.GetPointerEventType(e))
{
case Helpers.PointerEventType.Erase:
rootPage.NotifyUser("Erase mode: draw a line across the ink you want to erase.", SDKTemplate.NotifyType.StatusMessage);
inkManager.Mode = Windows.UI.Input.Inking.InkManipulationMode.Erasing;
break;
case Helpers.PointerEventType.Ink:
inkManager.Mode = Windows.UI.Input.Inking.InkManipulationMode.Inking;
renderer.EnterLiveRendering(pointerPoint, drawingAttributes);
break;
case Helpers.PointerEventType.Select:
rootPage.NotifyUser("Select mode: draw a contour around the ink you want to select.", SDKTemplate.NotifyType.StatusMessage);
inkManager.Mode = Windows.UI.Input.Inking.InkManipulationMode.Selecting;
renderer.EnterLiveRendering(pointerPoint, lassoAttributes);
break;
default:
return; // pointer is neither inking nor erasing nor selecting: do nothing
}
// Clear selection
inkManager.ClearSelection();
renderer.UpdateSelection();
AnchorSelection();
inkManager.ProcessPointerDown(pointerPoint);
pointerId = (int)pointerPoint.PointerId; // save pointer id so that no other pointer can ink until this one is released
}
}