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ToolStripDropDownMenu.ShowCheckMargin Propriété

  • Référence

Définition

Espace de noms:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll

Obtient ou définit une valeur indiquant si l'espace pour une coche est affiché sur le côté gauche de ToolStripMenuItem.

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

Valeur de propriété

Boolean

true si la marge de sélection est affichée ; sinon, false. La valeur par défaut est false.

Exemples

L’exemple de code suivant montre comment créer et initialiser un ContextMenuStrip contrôle en définissant les marges de vérification et d’image. Pour obtenir une liste de code complète, consultez Guide pratique pour activer les marges de vérification et les marges d’image dans les contrôles 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

Remarques

Définissez la ShowCheckMargin propriété pour true afficher une coche lorsque l’utilisateur choisit le ToolStripMenuItem.

S’applique à

Voir aussi