Control.IsMnemonic(Char, String) Metodo

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

Parametri

Restituisce

true se il carattere charCode è il carattere per i tasti di scelta rapida assegnato al controllo; in caso contrario, false.

Esempio

Nell'esempio di codice seguente viene illustrata un'estensione della classe button che esegue l'override del ProcessMnemonic metodo per mostrare un comportamento personalizzato. Nell'esempio viene inoltre illustrato l'uso delle CanSelect proprietà e IsMnemonic . Per eseguire questo esempio, incollare il codice seguente dopo una classe form nello stesso file. Aggiungere un pulsante di tipo MnemonicButton al modulo.

// 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

Commenti

Il carattere mnemonico è il carattere immediatamente successivo alla prima istanza di "&" in un oggetto String.

Si applica a

Vedi anche

• ProcessMnemonic(Char)