HardwareKeys Enumeration

Specifies the hardware buttons on a Pocket PC that can be accessed by the HardwareButton class.

Namespace: Microsoft.WindowsCE.Forms
Assembly: Microsoft.WindowsCE.Forms (in microsoft.windowsce.forms.dll)

'Declaration
Public Enumeration HardwareKeys
'Usage
Dim instance As HardwareKeys

public enum HardwareKeys
public enum HardwareKeys

 Member nameDescription
Supported by the .NET Compact FrameworkApplicationKey1Specifies the hardware button that corresponds to application 1. 
Supported by the .NET Compact FrameworkApplicationKey2Specifies the hardware button that corresponds to application 2. 
Supported by the .NET Compact FrameworkApplicationKey3Specifies the hardware button that corresponds to application 3. 
Supported by the .NET Compact FrameworkApplicationKey4Specifies the hardware button that corresponds to application 4. 
Supported by the .NET Compact FrameworkApplicationKey5Specifies the hardware button that corresponds to application 5. 
Supported by the .NET Compact FrameworkApplicationKey6Specifies the hardware button that corresponds to application 6. 
Supported by the .NET Compact FrameworkNoneSpecifies that no actual hardware buttons are associated with this HardwareButton instance. 

The form or control associated with a member of this enumeration can receive the KeyDownand KeyUp events when the corresponding hardware button is pressed.

This enumeration is not supported and throws a NotSupportedException on the Smartphone and other Windows CE devices that are not Pocket PCs.

The following code example uses the AssociatedControl and HardwareKey properties to display a form whenever the first and fourth buttons on Pocket PC are pressed. This code example is part of a larger example provided for the HardwareButton class.

Private Sub ConfigHWButton()
   'Set KeyPreview to true so that the form 
   'will receive key events before they 
   'are passed to the control that has focus. 

    Me.KeyPreview = True

      hwb1 = New HardwareButton()
      hwb4 = New HardwareButton()

   'Set the AssociatedControl property
   'to the current form and configure the
   'first and fourth buttons to activate the form.
   Try
      hwb1.AssociatedControl = Me
      hwb4.AssociatedControl = Me
      hwb1.HardwareKey = HardwareKeys.ApplicationKey1
      hwb4.HardwareKey = HardwareKeys.ApplicationKey4
   Catch exc As Exception
      MsgBox(exc.Message + " Check if the hardware button is physically available on this device.")
   End Try
 End Sub

Private Overloads Sub OnKeyUp(sender As Object, e As KeyEventArgs) Handles MyBase.KeyUp
    ' When a hardware button is pressed and released,
    ' this form receives the KeyUp event. The OnKeyUp
    ' method is used to determine which hardware
    ' button was pressed, because the event data
    ' specifies a member of the HardwareKeys enumeration.
    Select Case CType(e.KeyCode, HardwareKeys)
      Case HardwareKeys.ApplicationKey1
         statusBar1.Text = "Button 1 pressed."
      
      Case HardwareKeys.ApplicationKey4
         statusBar1.Text = "Button 4 pressed."
      
      Case Else
   End Select
End Sub

Windows CE, Windows Mobile for Pocket PC, Windows Mobile for Smartphone

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

.NET Compact Framework

Supported in: 2.0

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