Control.IsKeyLocked(Keys) Control.IsKeyLocked(Keys) Control.IsKeyLocked(Keys) Control.IsKeyLocked(Keys) Method

Definizione

Determina se il tasto BLOC MAIUSC, BLOC NUM o BLOC SCORR è attivo.Determines whether the CAPS LOCK, NUM LOCK, or SCROLL LOCK key is in effect.

public:
 static bool IsKeyLocked(System::Windows::Forms::Keys keyVal);
public static bool IsKeyLocked (System.Windows.Forms.Keys keyVal);
static member IsKeyLocked : System.Windows.Forms.Keys -> bool
Public Shared Function IsKeyLocked (keyVal As Keys) As Boolean

Parametri

keyVal
Keys Keys Keys Keys

Membro BLOC MAIUSC, BLOC NUM o BLOC SCORR dell'enumerazione Keys.The CAPS LOCK, NUM LOCK, or SCROLL LOCK member of the Keys enumeration.

Restituisce

true se il tasto o i tasti specificati sono attivi; in caso contrario, false.true if the specified key or keys are in effect; otherwise, false.

Eccezioni

Il keyVal parametro fa riferimento a una chiave diversa dalla chiave BLOC MAIUSC, BLOC NUM o BLOC SCORR.The keyVal parameter refers to a key other than the CAPS LOCK, NUM LOCK, or SCROLL LOCK key.

Esempi

Esempio di codice seguente consente di visualizzare una finestra di messaggio che indica se la chiave specificata (in questo caso il tasto BLOC MAIUSC) è attiva.The following code example displays a message box indicating whether the specified key (the Caps Lock key in this case) is in effect.

#using <System.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Windows::Forms;
int main()
{
   if (Control::IsKeyLocked( Keys::CapsLock )) {
      MessageBox::Show( "The Caps Lock key is ON." );
   }
   else { 
      MessageBox::Show( "The Caps Lock key is OFF." );
   }

}

using System;
using System.Windows.Forms;

public class CapsLockIndicator
{
    public static void Main()
    {
        if (Control.IsKeyLocked(Keys.CapsLock)) {
            MessageBox.Show("The Caps Lock key is ON.");
        }
        else {
            MessageBox.Show("The Caps Lock key is OFF.");
        }
    }
}

' To compile and run this sample from the command line, proceed as follows:
' vbc controliskeylocked.vb /r:System.Windows.Forms.dll /r:System.dll 
' /r:System.Data.dll /r:System.Drawing.dll

Imports System
Imports System.Windows.Forms
Imports Microsoft.VisualBasic

Public Class CapsLockIndicator
   
    Public Shared Sub Main()
        if Control.IsKeyLocked(Keys.CapsLock) Then
            MessageBox.Show("The Caps Lock key is ON.")
        Else
            MessageBox.Show("The Caps Lock key is OFF.")
        End If
    End Sub 'Main
End Class 'CapsLockIndicator

Commenti

Usare il IsKeyLocked proprietà per determinare se i tasti BLOC MAIUSC, BLOC NUM o BLOC SCORR sono, singolarmente o in combinazione.Use the IsKeyLocked property to determine whether the CAPS LOCK, NUM LOCK, or SCROLL LOCK keys are on, whether individually or in combination.

Si applica a