July 28, 2014
Indicates whether the user has deployed the physical hardware keyboard of the device.
Assembly: Microsoft.Phone (in Microsoft.Phone.dll)
In addition to accessing this property directly, you can register for the KeyboardDeployedChanged event handler to be notified when the user deploys or closes the physical hardware keyboard.
A related property, IsKeyboardPresent, can be used to determine whether the device contains a physical hardware keyboard.