ToolStripDropDownMenu.ShowCheckMargin Proprietà

Riferimento

Definizione

Spazio dei nomi:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Importante

Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.

Ottiene o imposta un valore che indica se sul bordo sinistro dell'oggetto ToolStripMenuItem viene visualizzato lo spazio per un segno di spunta.

public:
 property bool ShowCheckMargin { bool get(); void set(bool value); };

public bool ShowCheckMargin { get; set; }

member this.ShowCheckMargin : bool with get, set

Public Property ShowCheckMargin As Boolean

Valore della proprietà

Boolean

true se il margine per il segno di spunta viene visualizzato; in caso contrario, false. Il valore predefinito è false.

Esempio

Nell'esempio di codice seguente viene illustrato come creare e inizializzare un ContextMenuStrip controllo impostando i margini di controllo e immagine. Per un elenco di codice completo, vedere Procedura: Abilitare margini di controllo e margini di immagine nei controlli ContextMenuStrip.

public Form5()
{
    // Size the form to show three wide menu items.
    this.Width = 500;
    this.Text = "ToolStripContextMenuStrip: Image and Check Margins";

    // Create a new MenuStrip control.
    MenuStrip ms = new MenuStrip();

    // Create the ToolStripMenuItems for the MenuStrip control.
    ToolStripMenuItem bothMargins = new ToolStripMenuItem("BothMargins");
    ToolStripMenuItem imageMarginOnly = new ToolStripMenuItem("ImageMargin");
    ToolStripMenuItem checkMarginOnly = new ToolStripMenuItem("CheckMargin");
    ToolStripMenuItem noMargins = new ToolStripMenuItem("NoMargins");

    // Customize the DropDowns menus.
    // This ToolStripMenuItem has an image margin 
    // and a check margin.
    bothMargins.DropDown = CreateCheckImageContextMenuStrip();
    ((ContextMenuStrip)bothMargins.DropDown).ShowImageMargin = true;
    ((ContextMenuStrip)bothMargins.DropDown).ShowCheckMargin = true;

    // This ToolStripMenuItem has only an image margin.
    imageMarginOnly.DropDown = CreateCheckImageContextMenuStrip();
    ((ContextMenuStrip)imageMarginOnly.DropDown).ShowImageMargin = true;
    ((ContextMenuStrip)imageMarginOnly.DropDown).ShowCheckMargin = false;

    // This ToolStripMenuItem has only a check margin.
    checkMarginOnly.DropDown = CreateCheckImageContextMenuStrip();
    ((ContextMenuStrip)checkMarginOnly.DropDown).ShowImageMargin = false;
    ((ContextMenuStrip)checkMarginOnly.DropDown).ShowCheckMargin = true;

    // This ToolStripMenuItem has no image and no check margin.
    noMargins.DropDown = CreateCheckImageContextMenuStrip();
    ((ContextMenuStrip)noMargins.DropDown).ShowImageMargin = false;
    ((ContextMenuStrip)noMargins.DropDown).ShowCheckMargin = false;

    // Populate the MenuStrip control with the ToolStripMenuItems.
    ms.Items.Add(bothMargins);
    ms.Items.Add(imageMarginOnly);
    ms.Items.Add(checkMarginOnly);
    ms.Items.Add(noMargins);

    // Dock the MenuStrip control to the top of the form.
    ms.Dock = DockStyle.Top;

    // Add the MenuStrip control to the controls collection last.
    // This is important for correct placement in the z-order.
    this.Controls.Add(ms);
}

Public Sub New()
   ' Size the form to show three wide menu items.
   Me.Width = 500
   Me.Text = "ToolStripContextMenuStrip: Image and Check Margins"
   
   ' Create a new MenuStrip control.
   Dim ms As New MenuStrip()
   
   ' Create the ToolStripMenuItems for the MenuStrip control.
   Dim bothMargins As New ToolStripMenuItem("BothMargins")
   Dim imageMarginOnly As New ToolStripMenuItem("ImageMargin")
   Dim checkMarginOnly As New ToolStripMenuItem("CheckMargin")
   Dim noMargins As New ToolStripMenuItem("NoMargins")
   
   ' Customize the DropDowns menus.
   ' This ToolStripMenuItem has an image margin 
   ' and a check margin.
   bothMargins.DropDown = CreateCheckImageContextMenuStrip()
   CType(bothMargins.DropDown, ContextMenuStrip).ShowImageMargin = True
   CType(bothMargins.DropDown, ContextMenuStrip).ShowCheckMargin = True
   
   ' This ToolStripMenuItem has only an image margin.
   imageMarginOnly.DropDown = CreateCheckImageContextMenuStrip()
   CType(imageMarginOnly.DropDown, ContextMenuStrip).ShowImageMargin = True
   CType(imageMarginOnly.DropDown, ContextMenuStrip).ShowCheckMargin = False
   
   ' This ToolStripMenuItem has only a check margin.
   checkMarginOnly.DropDown = CreateCheckImageContextMenuStrip()
   CType(checkMarginOnly.DropDown, ContextMenuStrip).ShowImageMargin = False
   CType(checkMarginOnly.DropDown, ContextMenuStrip).ShowCheckMargin = True
   
   ' This ToolStripMenuItem has no image and no check margin.
   noMargins.DropDown = CreateCheckImageContextMenuStrip()
   CType(noMargins.DropDown, ContextMenuStrip).ShowImageMargin = False
   CType(noMargins.DropDown, ContextMenuStrip).ShowCheckMargin = False
   
   ' Populate the MenuStrip control with the ToolStripMenuItems.
   ms.Items.Add(bothMargins)
   ms.Items.Add(imageMarginOnly)
   ms.Items.Add(checkMarginOnly)
   ms.Items.Add(noMargins)
   
   ' Dock the MenuStrip control to the top of the form.
   ms.Dock = DockStyle.Top
   
   ' Add the MenuStrip control to the controls collection last.
   ' This is important for correct placement in the z-order.
   Me.Controls.Add(ms)
 End Sub

Commenti

Impostare la ShowCheckMargin proprietà su true per visualizzare un segno di spunta quando l'utente sceglie .ToolStripMenuItem

Si applica a

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