Control.IsMnemonic(Char, String) Metod

public:
 static bool IsMnemonic(char charCode, System::String ^ text);

public static bool IsMnemonic(char charCode, string text);

public static bool IsMnemonic(char charCode, string? text);

static member IsMnemonic : char * string -> bool

Public Shared Function IsMnemonic (charCode As Char, text As String) As Boolean

Parametrar

Returer

true charCode om tecknet är det mnemonic-tecken som tilldelats kontrollen, falseannars .

Exempel

I följande kodexempel visas ett tillägg av knappklassen som åsidosätter ProcessMnemonic metoden för att uppvisa anpassat beteende. Exemplet visar också användningen av CanSelect egenskaperna och IsMnemonic . Om du vill köra det här exemplet klistrar du in följande kod efter en formulärklass i samma fil. Lägg till en knapp av typen MnemonicButton i formuläret.

// This button is a simple extension of the button class that overrides
// the ProcessMnemonic method.  If the mnemonic is correctly entered,  
// the message box will appear and the click event will be raised.  
// This method makes sure the control is selectable and the 
// mnemonic is correct before displaying the message box
// and triggering the click event.
public ref class MyMnemonicButton: public Button
{
protected:
   bool ProcessMnemonic( char inputChar )
   {
      if ( CanSelect && IsMnemonic( inputChar, this->Text ) )
      {
         MessageBox::Show( "You've raised the click event "
         "using the mnemonic." );
         this->PerformClick();
         return true;
      }

      return false;
   }

};

// This button is a simple extension of the button class that overrides
// the ProcessMnemonic method.  If the mnemonic is correctly entered,  
// the message box will appear and the click event will be raised.  
public class MyMnemonicButton : Button
{
    // This method makes sure the control is selectable and the 
    // mneumonic is correct before displaying the message box
    // and triggering the click event.
    protected override bool ProcessMnemonic(char inputChar)
    {
        if (CanSelect && IsMnemonic(inputChar, this.Text))
        {
            MessageBox.Show("You've raised the click event " +
                "using the mnemonic.");
            this.PerformClick();
            return true;
        }
        return false;
    }
}

' This button is a simple extension of the button class that overrides
' the ProcessMnemonic method.  If the mnemonic is correctly entered,  
' the message box will appear and the click event will be raised.  
Public Class MyMnemonicButton
    Inherits Button

    ' This method makes sure the control is selectable and the 
    ' mneumonic is correct before displaying the message box
    ' and triggering the click event.
    <System.Security.Permissions.UIPermission( _
    System.Security.Permissions.SecurityAction.Demand, Window:=UIPermissionWindow.AllWindows)> _
    Protected Overrides Function ProcessMnemonic( _
        ByVal inputChar As Char) As Boolean

        If (CanSelect And IsMnemonic(inputChar, Me.Text)) Then
            MessageBox.Show("You've raised the click event " _
                & "using the mnemonic.")
            Me.PerformClick()
            Return True
        End If
        Return False
    End Function

End Class

Kommentarer

Det mnemonic tecknet är tecknet omedelbart efter den första instansen av "&" i en String.

Se även

• ProcessMnemonic(Char)