MenuItem.RadioCheck Propiedad

Definición

Obtiene o establece un valor que indica si el objeto MenuItem mostrará un botón de opción en lugar de una marca de verificación cuando esté seleccionado.Gets or sets a value indicating whether the MenuItem, if checked, displays a radio-button instead of a check mark.

public:
 property bool RadioCheck { bool get(); void set(bool value); };
public bool RadioCheck { get; set; }
member this.RadioCheck : bool with get, set
Public Property RadioCheck As Boolean

Valor de propiedad

true si se va a utilizar un botón de opción en lugar de una marca de verificación; false si se va a mostrar la marca de verificación estándar cuando el elemento de menú esté seleccionado.true if a radio-button is to be used instead of a check mark; false if the standard check mark is to be displayed when the menu item is checked. De manera predeterminada, es false.The default is false.

Ejemplos

En el ejemplo de código siguiente se usa la propiedad Checked para cambiar el estado de una aplicación.The following code example uses the Checked property to change the state of an application. En el ejemplo, se proporciona un grupo de elementos de menú que se utilizan para especificar el color del texto de un control de TextBox.In the example, a group of menu items are provided that are used to specify the color for the text in an TextBox control. En el ejemplo, el evento de Click de los tres elementos de menú utiliza el controlador de eventos proporcionado.In the example, the event handler provided is used by the Click event of the three menu items. Cada elemento de menú especifica un color, menuItemRed, menuItemGreeno menuItemBlue.Each menu item specifies a color, menuItemRed, menuItemGreen, or menuItemBlue. El controlador de eventos determina el elemento de menú en el que se hizo clic, coloca una marca de verificación en el elemento de menú seleccionado y cambia el color del texto del control TextBox del formulario, denominado textBox1.The event handler determines which menu item was clicked, places a checkmark to the selected menu item, and changes the text color of the form's TextBox control, named textBox1. En el ejemplo también se usa la propiedad RadioCheck para demostrar cómo se utiliza una comprobación de botón de radio para mostrar los elementos de menú que se excluyen mutuamente.The example also uses the RadioCheck property to demonstrate how a radio-button check is used to show menu items that are mutually exclusive. Este ejemplo requiere que el espacio de nombres System.Drawing se haya agregado al formulario que contiene este código.This example requires that the System.Drawing namespace has been added to the form that contains this code.

public:
   // This method is called from the constructor of the form to set up the menu items.
   void ConfigureMyMenus()
   {
      /* Set all of these menu items to Radio-Button check marks so the user can see 
         that only one color can be selected at a time. */
      menuItemRed->RadioCheck = true;
      menuItemBlue->RadioCheck = true;
      menuItemGreen->RadioCheck = true;
   }

private:
   // The following event handler would be connected to three menu items.
   void MyMenuClick( Object^ sender, EventArgs^ e )
   {
      if ( sender == menuItemBlue )
      {
         // Set the checkmark for the menuItemBlue menu item.
         menuItemBlue->Checked = true;
         // Uncheck the menuItemRed and menuItemGreen menu items.
         menuItemRed->Checked = false;
         menuItemGreen->Checked = false;
         // Set the color of the text in the TextBox control to Blue.
         textBox1->ForeColor = Color::Blue;
      }
      else if ( sender == menuItemRed )
      {
         // Set the checkmark for the menuItemRed menu item.
         menuItemRed->Checked = true;
         // Uncheck the menuItemBlue and menuItemGreen menu items.
         menuItemBlue->Checked = false;
         menuItemGreen->Checked = false;
         // Set the color of the text in the TextBox control to Red.
         textBox1->ForeColor = Color::Red;
      }
      else
      {
         // Set the checkmark for the menuItemGreen menu item.
         menuItemGreen->Checked = true;
         // Uncheck the menuItemRed and menuItemGreen menu items.
         menuItemBlue->Checked = false;
         menuItemRed->Checked = false;
         // Set the color of the text in the TextBox control to Blue.
         textBox1->ForeColor = Color::Green;
      }
   }
// This method is called from the constructor of the form to set up the menu items.
public void ConfigureMyMenus()
{
   /* Set all of these menu items to Radio-Button check marks so the user can see 
      that only one color can be selected at a time. */
   menuItemRed.RadioCheck = true;
   menuItemBlue.RadioCheck = true;
   menuItemGreen.RadioCheck = true;
}

// The following event handler would be connected to three menu items.
private void MyMenuClick(Object sender, EventArgs e)
{
   if(sender == menuItemBlue)
   {
      // Set the checkmark for the menuItemBlue menu item.
      menuItemBlue.Checked = true;
      // Uncheck the menuItemRed and menuItemGreen menu items.
      menuItemRed.Checked = false;
      menuItemGreen.Checked = false;
      // Set the color of the text in the TextBox control to Blue.
      textBox1.ForeColor = Color.Blue;
   }
   else if(sender == menuItemRed)
   {
      // Set the checkmark for the menuItemRed menu item.
      menuItemRed.Checked = true;
      // Uncheck the menuItemBlue and menuItemGreen menu items.
      menuItemBlue.Checked = false;
      menuItemGreen.Checked = false;
      // Set the color of the text in the TextBox control to Red.
      textBox1.ForeColor = Color.Red;
   }
   else
   {
     // Set the checkmark for the menuItemGreen menu item.
      menuItemGreen.Checked = true;
      // Uncheck the menuItemRed and menuItemGreen menu items.
      menuItemBlue.Checked = false;
      menuItemRed.Checked = false;
      // Set the color of the text in the TextBox control to Blue.
      textBox1.ForeColor = Color.Green;
   }
}

' This method is called from the constructor of the form to set up the menu
' items.
Public Sub ConfigureMyMenus()
    ' Set all of these menu items to Radio-Button check marks so the user
    ' can see that only one color can be selected at a time. 
    menuItemRed.RadioCheck = True
    menuItemBlue.RadioCheck = True
    menuItemGreen.RadioCheck = True
End Sub    

' The following event handler would be connected to three menu items.
Private Sub MyMenuClick(sender As Object, e As EventArgs)
    If sender Is menuItemBlue Then
        ' Set the checkmark for the menuItemBlue menu item.
        menuItemBlue.Checked = True
        ' Uncheck the menuItemRed and menuItemGreen menu items.
        menuItemRed.Checked = False
        menuItemGreen.Checked = False
        ' Set the color of the text in the TextBox control to Blue.
        textBox1.ForeColor = Color.Blue
    Else
        If sender Is menuItemRed Then
            ' Set the checkmark for the menuItemRed menu item.
            menuItemRed.Checked = True
            ' Uncheck the menuItemBlue and menuItemGreen menu items.
            menuItemBlue.Checked = False
            menuItemGreen.Checked = False
            ' Set the color of the text in the TextBox control to Red.
            textBox1.ForeColor = Color.Red
        Else
            ' Set the checkmark for the menuItemGreen menu item.
            menuItemGreen.Checked = True
            ' Uncheck the menuItemRed and menuItemGreen menu items.
            menuItemBlue.Checked = False
            menuItemRed.Checked = False
            ' Set the color of the text in the TextBox control to Blue.
            textBox1.ForeColor = Color.Green
        End If
    End If
End Sub

Comentarios

Las marcas de verificación no implican necesariamente un estado mutuamente excluyente para un grupo de elementos de menú.Check marks do not necessarily imply a mutually exclusive state for a group of menu items. Puede usar esta propiedad para indicar al usuario que la marca de verificación de un elemento de menú es mutuamente excluyente.You can use this property to indicate to the user that the check mark of a menu item is mutually exclusive.

Se aplica a

Consulte también: