MenuCommand.Supported 属性

获取或设置一个值，用以指示是否支持此菜单项。

**命名空间:**System.ComponentModel.Design
**程序集:**System（在 system.dll 中）

语法

声明
Public Overridable Property Supported As Boolean
用法
Dim instance As MenuCommand
Dim value As Boolean

value = instance.Supported

instance.Supported = value

public virtual bool Supported { get; set; }

public:
virtual property bool Supported {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_Supported ()

/** @property */
public void set_Supported (boolean value)

public function get Supported () : boolean

public function set Supported (value : boolean)

属性值

如果支持此项（默认情况），则为 true；否则为 false。

示例

下面的代码示例创建一个 MenuCommand 对象，配置其属性，并将其添加到 IMenuCommandService。

<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Public Class CDesigner
    Inherits System.ComponentModel.Design.ComponentDesigner

    Public Overrides Sub Initialize(ByVal comp As IComponent)
        MyBase.Initialize(comp)

        Dim mcs As IMenuCommandService = CType(comp.Site.GetService(GetType(IMenuCommandService)), IMenuCommandService)
        Dim mc As New MenuCommand(New EventHandler(AddressOf OnF1Help), StandardCommands.F1Help)
        mc.Enabled = True
        mc.Visible = True
        mc.Supported = True
        mcs.AddCommand(mc)
        System.Windows.Forms.MessageBox.Show("Initialize() has been invoked.")
    End Sub

    Private Sub OnF1Help(ByVal sender As Object, ByVal e As EventArgs)
        System.Windows.Forms.MessageBox.Show("F1Help has been invoked.")
    End Sub
End Class

[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")] 
public class CDesigner : System.ComponentModel.Design.ComponentDesigner 
{
    public override void Initialize(IComponent comp) 
    {
        base.Initialize(comp);

        IMenuCommandService mcs = (IMenuCommandService)comp.Site.
                    GetService(typeof(IMenuCommandService));
        MenuCommand mc = new MenuCommand(new EventHandler(OnF1Help), StandardCommands.F1Help);
        mc.Enabled = true;
        mc.Visible = true;
        mc.Supported = true;
        mcs.AddCommand(mc);
        System.Windows.Forms.MessageBox.Show("Initialize() has been invoked.");
    }

    private void OnF1Help(object sender, EventArgs e) 
    {
        System.Windows.Forms.MessageBox.Show("F1Help has been invoked.");
    }
}

   public ref class CDesigner: public ComponentDesigner
   {
   public:
    [PermissionSetAttribute(SecurityAction::Demand, Name="FullTrust")]
      virtual void Initialize( IComponent^ comp ) override
      {
         ComponentDesigner::Initialize( comp );
         IMenuCommandService^ mcs = static_cast<IMenuCommandService^>(comp->Site->GetService( IMenuCommandService::typeid ));
         MenuCommand^ mc = gcnew MenuCommand( gcnew EventHandler( this, &CDesigner::OnF1Help ),StandardCommands::F1Help );
         mc->Enabled = true;
         mc->Visible = true;
         mc->Supported = true;
         mcs->AddCommand( mc );
         System::Windows::Forms::MessageBox::Show( "Initialize() has been invoked." );
      }

   private:
      void OnF1Help( Object^ /*sender*/, EventArgs^ /*e*/ )
      {
         System::Windows::Forms::MessageBox::Show( "F1Help has been invoked." );
      }
   };
}

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

MenuCommand 类
MenuCommand 成员
System.ComponentModel.Design 命名空间