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UIPermissionWindow 列挙体

  • [アーティクル]

コードでの使用が許可されるウィンドウの種類を指定します。

<Serializable>
Public Enum UIPermissionWindow
[C#]
[Serializable]
public enum UIPermissionWindow
[C++]
[Serializable]
__value public enum UIPermissionWindow
[JScript]
public
   Serializable
enum UIPermissionWindow

解説

この列挙体は、 UIPermission で使用されます。

メンバ

メンバ名 説明
AllWindows ユーザーは、すべてのウィンドウとユーザー入力イベントを無制限に使用できます。
NoWindows ユーザーは、どのウィンドウまたはユーザー インターフェイス イベントも使用できません。ユーザー インターフェイスは使用できません。
SafeSubWindows ユーザーは、描画を行うために SafeSubWindows だけを使用できます。また、そのサブウィンドウ内のユーザー インターフェイスとしてユーザー入力イベントだけを使用できます。 SafeSubWindows の例としては、 MessageBox 、コモン ダイアログのコントロール、ブラウザ内に表示されるコントロールがあります。
SafeTopLevelWindows ユーザーは、描画を行うために SafeTopLevelWindows と SafeSubWindows だけを使用できます。また、それらのトップレベル ウィンドウとサブウィンドウ内のユーザー インターフェイスとしてユーザー入力イベントだけを使用できます。これらの特殊なウィンドウは、信頼性が一部しか確認されていないコード用として明確にラベル付けされ、最小サイズと最大サイズが制限されます。これらの制限により、信頼性の高いシステム ダイアログの偽造など、悪意を持つ可能性があるコードによるなりすまし攻撃を防止できます。

使用例

 
' This class generates UIPermission objects using UIPermissionWindow and 
' UIPermissionClipboard enumeration values.

Imports System
Imports System.Security
Imports System.Security.Permissions
Imports Microsoft.VisualBasic


Friend Class UIGenerator
    Private myUI As UIPermissionWindow() = _
    {UIPermissionWindow.AllWindows, _
     UIPermissionWindow.SafeSubWindows, _
     UIPermissionWindow.SafeTopLevelWindows, _
     UIPermissionWindow.NoWindows}

    Private myCB As UIPermissionClipboard() = _
    {UIPermissionClipboard.AllClipboard, _
     UIPermissionClipboard.OwnClipboard, _
     UIPermissionClipboard.NoClipboard}

    Private uiIndex As Integer = 0
    Private cbIndex As Integer = 0


    Public Sub New()
        ResetIndex()
    End Sub 'New


    Public Sub ResetIndex()
        uiIndex = 0
        cbIndex = 0
    End Sub 'ResetIndex

    Public Sub ResetUIIndex()
        uiIndex = 0
    End Sub 'ResetUIIndex

    ' Create a UIPermission object using both a UIPermission Window enumeration and a 
    ' UIPermissionClipboard enumeration to specify permissions.
    Public Overloads Function CreateUI(ByRef UIPerm As UIPermission, ByRef ui As UIPermissionWindow, ByRef cb As UIPermissionClipboard) As Boolean

        If uiIndex >= myUI.Length AndAlso cbIndex >= myCB.Length - 1 Then
            ui = UIPermissionWindow.NoWindows
            cb = UIPermissionClipboard.NoClipboard
            UIPerm = New UIPermission(ui, cb)
            Return False
        End If

        If uiIndex >= myUI.Length AndAlso cbIndex < myCB.Length - 1 Then
            ResetUIIndex()
            ui = myUI(uiIndex)
            uiIndex = uiIndex + 1
            cbIndex = cbIndex + 1
            cb = myCB(cbIndex)
            'ToDo: Unsupported operator
            'ToDo: && operator not supported within expressions
            UIPerm = New UIPermission(ui, cb)
            Return True
        End If

        ui = myUI(uiIndex)
        uiIndex = uiIndex + 1
        cb = myCB(cbIndex)
        Try
            UIPerm = New UIPermission(ui, cb)
            Return True
        Catch e As Exception
            Console.WriteLine(("Cannot create UIPermission: " & ui & " " & e.ToString()))
            UIPerm = New UIPermission(PermissionState.None)
            ui = UIPermissionWindow.NoWindows
            Return True
        End Try
    End Function 'CreateUI

    ' Create a UIPermission using the specified UIPermissionWindow enumeration 
    ' to set Window permissions.
    Public Overloads Function CreateUI(ByRef uiPerm As UIPermission, _
    ByRef ui As UIPermissionWindow) As Boolean

        If uiIndex >= myUI.Length Then
            uiPerm = New UIPermission(PermissionState.None)
            ui = UIPermissionWindow.NoWindows
            Return False
        End If
        ui = myUI(uiIndex)
        uiIndex = uiIndex + 1
        Try
            uiPerm = New UIPermission(ui)
            Return True
        Catch e As Exception
            Console.WriteLine(("Cannot create UIPermission: " & ui & " " & e.ToString()))
            uiPerm = New UIPermission(PermissionState.None)
            ui = UIPermissionWindow.NoWindows
            Return True
        End Try
    End Function 'CreateUI

    ' Create a UIPermission using  Create a UIPermission using the specified UIPermissionClipboard enumeration to set Clipboard permissions.
    Public Overloads Function CreateUI(ByRef uiPerm As UIPermission, ByRef cb As UIPermissionClipboard) As Boolean


        If cbIndex >= myCB.Length Then
            uiPerm = New UIPermission(PermissionState.None)
            cb = UIPermissionClipboard.NoClipboard

            Return False
        End If


        cb = myCB(cbIndex)
        cbIndex = cbIndex + 1
        Try
            uiPerm = New UIPermission(cb)
            Return True
        Catch e As Exception
            Console.WriteLine(("Cannot create UIPermission: " & cb & " " & e.ToString()))
            uiPerm = New UIPermission(PermissionState.None)
            cb = UIPermissionClipboard.NoClipboard
            Return True
        End Try
    End Function 'CreateUI
End Class 'UIGenerator 
'End of UIGenerator.

[C#] 

// This class generates UIPermission objects using UIPermissionWindow and 
// UIPermissionClipboard enumeration values.

using System;
using System.Security; 
using System.Security.Permissions; 

public  class UIGenerator
           {
               private UIPermissionWindow[] myUI = 
                {
                    UIPermissionWindow.AllWindows,
                    UIPermissionWindow.SafeSubWindows,
                    UIPermissionWindow.SafeTopLevelWindows, 
                    UIPermissionWindow.NoWindows};

               private UIPermissionClipboard[] myCB = 
                {
                    UIPermissionClipboard.AllClipboard,  
                    UIPermissionClipboard.OwnClipboard, 
                    UIPermissionClipboard.NoClipboard};

               private int uiIndex = 0;
               private int cbIndex = 0;

               public UIGenerator()
               {
                   ResetIndex();
               }

               public void ResetIndex()
               {
                   uiIndex = 0;
                   cbIndex = 0;
               }
               public void ResetUIIndex()
               {
                   uiIndex = 0;
               }
               // Create a UIPermission object using both a UIPermission Window enumeration and a 
               // UIPermissionClipboard enumeration to specify permissions.
               public bool CreateUI(out UIPermission UIPerm, out UIPermissionWindow ui, out UIPermissionClipboard cb)
               {

                   if(uiIndex >= myUI.Length && cbIndex >= (myCB.Length - 1)) 
                   {
                       ui = UIPermissionWindow.NoWindows;
                       cb = UIPermissionClipboard.NoClipboard;
                       UIPerm = new UIPermission(ui, cb);
                       return false;
                   }

                   if(uiIndex >= myUI.Length && cbIndex < (myCB.Length - 1)) 
                   {
                       ResetUIIndex();
                       ui = myUI[uiIndex++];
                       cb = myCB[++cbIndex];
                       UIPerm = new UIPermission(ui, cb);
                       return true;
                   }

                   ui = myUI[uiIndex++];
                   cb= myCB[cbIndex];
                   try
                   {
                       UIPerm = new UIPermission(ui, cb);
                       return true;
                   } 
                   catch(Exception e)
                   {
                       Console.WriteLine("Cannot create UIPermission: " + ui +" "+e);
                       UIPerm = new UIPermission(PermissionState.None);
                       ui = UIPermissionWindow.NoWindows;
                       return true;
                   }
               }
               // Create a UIPermission using  Create a UIPermission using the specified UIPermissionWindow 
               // enumeration to set Window permissions.
               public bool CreateUI(out UIPermission uiPerm, out UIPermissionWindow ui)
               {

                   if(uiIndex >= myUI.Length) 
                   {
                       uiPerm = new UIPermission(PermissionState.None);
                       ui=UIPermissionWindow.NoWindows;
                       return false;
                   }
                   ui = myUI[uiIndex++];
                   try
                   {
                       uiPerm = new UIPermission(ui);
                       return true;
                   } 
                   catch(Exception e)
                   {
                       Console.WriteLine("Cannot create UIPermission: " + ui +" "+e);
                       uiPerm = new UIPermission(PermissionState.None);
                       ui = UIPermissionWindow.NoWindows;
                       return true;
                   }
               }
               // Create a UIPermission using the specified UIPermissionClipboard enumeration to 
               // set Clipboard permissions.
               public bool CreateUI(out UIPermission uiPerm,  out UIPermissionClipboard cb)
               {


                   if(cbIndex >= myCB.Length) 
                   {
                       uiPerm = new UIPermission(PermissionState.None);
                       cb = UIPermissionClipboard.NoClipboard;

                       return false;
                   }


                   cb= myCB[cbIndex++];
                   try
                   {
                       uiPerm = new UIPermission(cb);
                       return true;
                   } 
                   catch(Exception e)
                   {
                       Console.WriteLine("Cannot create UIPermission: " + cb +" "+e);
                       uiPerm = new UIPermission(PermissionState.None);
                       cb = UIPermissionClipboard.NoClipboard;
                       return true;
                   }
               }

           } //End of UIGenerator.

[C++] 

// This class generates UIPermission objects using UIPermissionWindow and 
// UIPermissionClipboard enumeration values.

#using <mscorlib.dll>
using namespace System::Runtime::InteropServices;
using namespace System;
using namespace System::Security; 
using namespace System::Security::Permissions; 

public  __gc class UIGenerator
{
private:
    UIPermissionWindow myUI[];
    UIPermissionClipboard myCB[];
    int uiIndex;
    int cbIndex;

public:
    UIGenerator()
    {
        UIPermissionWindow tempUI[] = 
        {
            UIPermissionWindow::AllWindows,
                UIPermissionWindow::SafeSubWindows,
                UIPermissionWindow::SafeTopLevelWindows, 
                UIPermissionWindow::NoWindows
        };

        UIPermissionClipboard tempCB[] = 
        {
            UIPermissionClipboard::AllClipboard,  
                UIPermissionClipboard::OwnClipboard, 
                UIPermissionClipboard::NoClipboard
        };
        myUI = tempUI;
        myCB = tempCB;
        ResetIndex();
    }

    void ResetIndex()
    {
        uiIndex = 0;
        cbIndex = 0;
    }
    void ResetUIIndex()
    {
        uiIndex = 0;
    }
    // Create a UIPermission object using both a UIPermission Window enumeration and a 
    // UIPermissionClipboard enumeration to specify permissions.
    bool CreateUI([Out]UIPermission** UIPerm, [Out]UIPermissionWindow* ui, [Out]UIPermissionClipboard* cb)
    {

        if(uiIndex >= myUI->Length && cbIndex >= (myCB->Length - 1)) 
        {
            *ui = UIPermissionWindow::NoWindows;
            *cb = UIPermissionClipboard::NoClipboard;
            *UIPerm = new UIPermission(*ui, *cb);
            return false;
        }

        if(uiIndex >= myUI->Length && cbIndex < (myCB->Length - 1)) 
        {
            ResetUIIndex();
            *ui = myUI[uiIndex++];
            *cb = myCB[++cbIndex];
            *UIPerm = new UIPermission(*ui, *cb);
            return true;
        }

        *ui = myUI[uiIndex++];
        *cb= myCB[cbIndex];
        try
        {
            *UIPerm = new UIPermission(*ui, *cb);
            return true;
        } 
        catch(Exception* e)
        {
            Console::WriteLine(S"Cannot create UIPermission: {0} {1}", __box(*ui), e);
            *UIPerm = new UIPermission(PermissionState::None);
            *ui = UIPermissionWindow::NoWindows;
            return true;
        }
    }
    // Create a UIPermission using  Create a UIPermission using the specified UIPermissionWindow 
    // enumeration to set Window permissions.
    bool CreateUI([Out]UIPermission** uiPerm, [Out]UIPermissionWindow* ui)
    {

        if(uiIndex >= myUI->Length) 
        {
            *uiPerm = new UIPermission(PermissionState::None);
            *ui=UIPermissionWindow::NoWindows;
            return false;
        }
        *ui = myUI[uiIndex++];
        try
        {
            *uiPerm = new UIPermission(*ui);
            return true;
        } 
        catch(Exception* e)
        {
            Console::WriteLine(S"Cannot create UIPermission: {0} {1}", __box(*ui), e);
            *uiPerm = new UIPermission(PermissionState::None);
            *ui = UIPermissionWindow::NoWindows;
            return true;
        }
    }
    // Create a UIPermission using the specified UIPermissionClipboard enumeration to 
    // set Clipboard permissions.
    bool CreateUI([Out]UIPermission** uiPerm,  [Out]UIPermissionClipboard* cb)
    {

        if(cbIndex >= myCB->Length) 
        {
            *uiPerm = new UIPermission(PermissionState::None);
            *cb = UIPermissionClipboard::NoClipboard;

            return false;
        }

        *cb= myCB[cbIndex++];
        try
        {
            *uiPerm = new UIPermission(*cb);
            return true;
        } 
        catch(Exception* e)
        {
            Console::WriteLine(S"Cannot create UIPermission: {0} {1}", __box(*cb), e);
            *uiPerm = new UIPermission(PermissionState::None);
            *cb = UIPermissionClipboard::NoClipboard;
            return true;
        }
    }

}; //End of UIGenerator.

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必要条件

名前空間: System.Security.Permissions

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ

アセンブリ: Mscorlib (Mscorlib.dll 内)

参照

System.Security.Permissions 名前空間 | UIPermission | UIPermissionAttribute | UIPermissionClipboard