This may sound like a silly question, but...why would you want to?
Imagine the scene: you want to draw a pretty picture of your cat. So you start the app and have to wave your arm about to draw lines. Unfortunately, while you are waving your arm about, you can't see what you are drawing clearly,
because it is moving
This makes it rather difficult to see when you should stop drawing a line and so on.
Now try doing the same thing, on a commuter train, or as a passenger in a car...
This wouldn't be difficult to implement, I suspect - but it would be pretty much impossible to use. But if you insist...
MSDN[
^]
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