KeyStates Enumeration
Specifies constants that define the state of a key.
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Namespace: System.Windows.InputAssembly: PresentationCore (in PresentationCore.dll)
The following example changes the color of a Button if the KeyStates of the key passed in the KeyEventArgs is Down. The state of the key is determined by using a bitwise AND operation. The same technique can be used to determine whether a key has multiple states, such as being in the Toggled state and the Down state.
// A bitwise AND operation is used in the comparison. // e is an instance of KeyEventArgs. // btnDown is a Button. if ((e.KeyStates & KeyStates.Down) > 0) { btnDown.Background = Brushes.Red; }
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.