United States (English)

Home Library Learn Samples Downloads Support Community Forums

MSDN Library

.NET Development

.NET Framework 4.5

.NET Framework Class Library

System.Windows Namespaces

System.Windows.Input

AccessKeyEventArgs Class

AccessKeyManager Class

AccessKeyPressedEventArgs Class

AccessKeyPressedEventHandler Delegate

ApplicationCommands Class

CanExecuteChangedEventManager Class

CanExecuteRoutedEventArgs Class

CanExecuteRoutedEventHandler Delegate

CaptureMode Enumeration

CommandBinding Class

CommandBindingCollection Class

CommandConverter Class

CommandManager Class

ComponentCommands Class

Cursor Class

CursorConverter Class

Cursors Class

CursorType Enumeration

ExecutedRoutedEventArgs Class

ExecutedRoutedEventHandler Delegate

FocusManager Class

FocusNavigationDirection Enumeration

ICommand Interface

ICommandSource Interface

IInputLanguageSource Interface

IManipulator Interface

ImeConversionModeValues Enumeration

ImeSentenceModeValues Enumeration

InertiaExpansionBehavior Class

InertiaRotationBehavior Class

InertiaTranslationBehavior Class

InputBinding Class

InputBindingCollection Class

InputDevice Class

InputEventArgs Class

InputEventHandler Delegate

InputGesture Class

InputGestureCollection Class

InputLanguageChangedEventArgs Class

InputLanguageChangingEventArgs Class

InputLanguageEventArgs Class

InputLanguageEventHandler Delegate

InputLanguageManager Class

InputManager Class

InputMethod Class

InputMethodState Enumeration

InputMethodStateChangedEventArgs Class

InputMethodStateChangedEventHandler Delegate

InputMode Enumeration

InputScope Class

InputScopeConverter Class

InputScopeName Class

InputScopeNameConverter Class

InputScopeNameValue Enumeration

InputScopePhrase Class

InputType Enumeration

Key Enumeration

KeyBinding Class

KeyboardDevice Class

KeyboardEventArgs Class

KeyboardEventHandler Delegate

KeyboardFocusChangedEventArgs Class

KeyboardFocusChangedEventHandler Delegate

KeyboardInputProviderAcquireFocusEventArgs Class

KeyboardInputProviderAcquireFocusEventHandler Delegate

KeyboardNavigation Class

KeyboardNavigationMode Enumeration

KeyConverter Class

KeyEventArgs Class

KeyEventHandler Delegate

KeyGesture Class

KeyGestureConverter Class

KeyGestureValueSerializer Class

KeyInterop Class

KeyStates Enumeration

KeyValueSerializer Class

Manipulation Class

ManipulationBoundaryFeedbackEventArgs Class

ManipulationCompletedEventArgs Class

ManipulationDelta Class

ManipulationDeltaEventArgs Class

ManipulationInertiaStartingEventArgs Class

ManipulationModes Enumeration

ManipulationPivot Class

ManipulationStartedEventArgs Class

ManipulationStartingEventArgs Class

ManipulationVelocities Class

MediaCommands Class

ModifierKeys Enumeration

ModifierKeysConverter Class

ModifierKeysValueSerializer Class

Mouse Class

MouseAction Enumeration

MouseActionConverter Class

MouseActionValueSerializer Class

MouseBinding Class

MouseButton Enumeration

MouseButtonEventArgs Class

MouseButtonEventHandler Delegate

MouseButtonState Enumeration

MouseDevice Class

MouseEventArgs Class

MouseEventHandler Delegate

MouseGesture Class

MouseGestureConverter Class

MouseGestureValueSerializer Class

MouseWheelEventArgs Class

MouseWheelEventHandler Delegate

NavigationCommands Class

NotifyInputEventArgs Class

NotifyInputEventHandler Delegate

PreProcessInputEventArgs Class

PreProcessInputEventHandler Delegate

ProcessInputEventArgs Class

ProcessInputEventHandler Delegate

QueryCursorEventArgs Class

QueryCursorEventHandler Delegate

RestoreFocusMode Enumeration

RoutedCommand Class

RoutedUICommand Class

SpeechMode Enumeration

StagingAreaInputItem Class

Stylus Class

StylusButton Class

StylusButtonCollection Class

StylusButtonEventArgs Class

StylusButtonEventHandler Delegate

StylusButtonState Enumeration

StylusDevice Class

StylusDeviceCollection Class

StylusDownEventArgs Class

StylusDownEventHandler Delegate

StylusEventArgs Class

StylusEventHandler Delegate

StylusPoint Structure

StylusPointCollection Class

StylusPointDescription Class

StylusPointProperties Class

StylusPointProperty Class

StylusPointPropertyInfo Class

StylusPointPropertyUnit Enumeration

StylusSystemGestureEventArgs Class

StylusSystemGestureEventHandler Delegate

SystemGesture Enumeration

Tablet Class

TabletDevice Class

TabletDeviceCollection Class

TabletDeviceType Enumeration

TabletHardwareCapabilities Enumeration

TextComposition Class

TextCompositionAutoComplete Enumeration

TextCompositionEventArgs Class

TextCompositionEventHandler Delegate

TextCompositionManager Class

Touch Class

TouchAction Enumeration

TouchDevice Class

TouchEventArgs Class

TouchFrameEventArgs Class

TouchFrameEventHandler Delegate

TouchPoint Class

TouchPointCollection Class

TraversalRequest Class

Minimize

This topic has not yet been rated - Rate this topic

KeyStates Enumeration

.NET Framework 4.5

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.Input
Assembly: PresentationCore (in PresentationCore.dll)

[FlagsAttribute]
public enum KeyStates

XAML Attribute Usage

<object property="enumerationMemberName" .../>

	Member name	Description
	None	The key is not pressed.
	Down	The key is pressed.
	Toggled	The key is toggled.

The KeyStates class is a bit field (flagwise) enumeration. Therefore, a key can be in multiple states. For example, a key could be in the Down state as well as in the Toggled state. Use bit operations to determine the exact state or states the key is in.

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;
}

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

System.Windows.Input Namespace

Other Resources

Did you find this helpful? Yes No

Not accurate

Not enough depth

Need more code examples

(1500 characters remaining)

© 2013 Microsoft. All rights reserved.