OSFeature.Feature 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取 OSFeature 类的 static 实例进行功能查询。 此属性为只读。

public:
 static property System::Windows::Forms::OSFeature ^ Feature { System::Windows::Forms::OSFeature ^ get(); };

public static System.Windows.Forms.OSFeature Feature { get; }

static member Feature : System.Windows.Forms.OSFeature

Public Shared ReadOnly Property Feature As OSFeature

属性值

OSFeature

OSFeature 类的实例。

示例

以下示例查询OSFeatureLayeredWindows功能。 检查版本以查看它是否为 null，以确定功能是否存在。 结果显示在文本框中。 此代码假定 textBox1 已创建并放置在窗体上。

private:
   void LayeredWindows()
   {
      // Gets the version of the layered windows feature.
      Version^ myVersion = OSFeature::Feature->GetVersionPresent(
         OSFeature::LayeredWindows );
      
      // Prints whether the feature is available.
      if ( myVersion != nullptr )
      {
         textBox1->Text = "Layered windows feature is installed.\n";
      }
      else
      {
         textBox1->Text = "Layered windows feature is not installed.\n";
      }
   }

private void LayeredWindows() {
   // Gets the version of the layered windows feature.
   Version myVersion =
       OSFeature.Feature.GetVersionPresent(OSFeature.LayeredWindows);

   // Prints whether the feature is available.
   if (myVersion != null)
      textBox1.Text = "Layered windows feature is installed.\n";
   else
      textBox1.Text = "Layered windows feature is not installed.\n";
}

Private Sub LayeredWindows()
    ' Gets the version of the layered windows feature.
    Dim myVersion As Version = _
       OSFeature.Feature.GetVersionPresent(OSFeature.LayeredWindows)
       
    ' Prints whether the feature is available.
    If (myVersion IsNot Nothing) Then
        textBox1.Text = "Layered windows feature is installed." & _
           ControlChars.CrLf
    Else
        textBox1.Text = "Layered windows feature is not installed." & _
           ControlChars.CrLf
    End If
End Sub

注解

使用此属性 static 查询操作系统功能。 无法创建此类的实例。

若要确定功能的版本，请 GetVersionPresent 调用 方法。 若要确定是否存在功能或特定版本，请调用 IsPresent 方法，并使用此类中提供的功能标识符指定要查找的功能。

另请参阅

• OSFeature()
• Version
• FeatureSupport
• LayeredWindows