HardwareButton.HardwareKey 屬性

取得或設定其中一個 HardwareKeys 值，以便與 Pocket PC 上的 HardwareButton 產生關聯。

命名空間：  Microsoft.WindowsCE.Forms
組件：  Microsoft.WindowsCE.Forms (在 Microsoft.WindowsCE.Forms.dll 中)

語法

'宣告
Public Property HardwareKey As HardwareKeys
'用途
Dim instance As HardwareButton
Dim value As HardwareKeys

value = instance.HardwareKey

instance.HardwareKey = value

public HardwareKeys HardwareKey { get; set; }

public:
property HardwareKeys HardwareKey {
    HardwareKeys get ();
    void set (HardwareKeys value);
}

public function get HardwareKey () : HardwareKeys
public function set HardwareKey (value : HardwareKeys)

屬性值

型別：Microsoft.WindowsCE.Forms.HardwareKeys

HardwareKeys 值。

備註

您也必須將 AssociatedControl 屬性設定為想要使用硬體按鈕啟動的表單或控制項。

範例

下列程式碼範例顯示如何產生兩個硬體按鈕的關聯，以啟動目前的表單。這個程式碼範例是 HardwareButton 類別完整範例的一部分。

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
      MessageBox.Show(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

// Configure hardware buttons
// 1 and 4 to activate the current form.
private void HBConfig()
    {
        try 
        {
            hwb1 = new HardwareButton();
            hwb4 = new HardwareButton();
            hwb1.AssociatedControl = this;
            hwb4.AssociatedControl = this;
            hwb1.HardwareKey = HardwareKeys.ApplicationKey1;
            hwb4.HardwareKey = HardwareKeys.ApplicationKey4;
        }
        catch (Exception exc)
        {
            MessageBox.Show(exc.Message + " Check if the hardware button is physically available on this device.");
        }
}

// 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.
private void OnKeyUp(object sender, KeyEventArgs e)
{
    switch ((HardwareKeys)e.KeyCode)
    {
        case HardwareKeys.ApplicationKey1:
            statusBar1.Text = "Button 1 pressed.";
            break;

        case HardwareKeys.ApplicationKey4:
            statusBar1.Text = "Button 4 pressed.";
            break;

        default:
            break;
    }
}

使用權限

• 完全信任立即呼叫者。這個成員無法供部分信任的程式碼使用。如需詳細資訊，請參閱從部分受信任程式碼使用程式庫。

平台

Windows Mobile for Pocket PC

.NET Framework 和 .NET Compact Framework 並不支援各種平台的所有版本。如需支援平台版本的相關資訊，請參閱 .NET Framework 系統需求。

版本資訊

.NET Compact Framework

支援版本：3.5、2.0

請參閱

參考

HardwareButton 類別

HardwareButton 成員

Microsoft.WindowsCE.Forms 命名空間