KeyStates Enumeration
.NET Framework 3.0
Specifies constants that define the state of a key.
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Namespace: System.Windows.InputAssembly: PresentationCore (in presentationcore.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
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 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Community Additions
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