Keyboard.IsKeyDown(Key) Method

Reference

Definition

Namespace:: System.Windows.Input

Assembly:: PresentationCore.dll

Important

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Determines whether the specified key is pressed.

public:
 static bool IsKeyDown(System::Windows::Input::Key key);

public static bool IsKeyDown (System.Windows.Input.Key key);

static member IsKeyDown : System.Windows.Input.Key -> bool

Public Shared Function IsKeyDown (key As Key) As Boolean

Parameters

key: Key

The specified key.

Returns

Boolean

true if key is in the down state; otherwise, false.

Examples

The following example shows how to use the IsKeyDown method to determine the state of a specific key. The Return key is passed to the IsKeyDown method. If the method returns true, the background of a Button is changed.

// Uses the Keyboard.IsKeyDown to determine if a key is down.
// e is an instance of KeyEventArgs.
if (Keyboard.IsKeyDown(Key.Return))
{
    btnIsDown.Background = Brushes.Red;
}
else
{
    btnIsDown.Background = Brushes.AliceBlue;
}

' Uses the Keyboard.IsKeyDown to determine if a key is down.
' e is an instance of KeyEventArgs.
If Keyboard.IsKeyDown(Key.Return) Then
    btnIsDown.Background = Brushes.Red
Else
    btnIsDown.Background = Brushes.AliceBlue
End If

Remarks

The GetKeyStates method can be used to determine the set of states of a specific key.

Applies to

Dela via