ToolStripDropDownMenu.ShowCheckMargin Eigenschaft

Referenz

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Wichtig

Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.

Ruft einen Wert ab, der angibt, ob der Platz für ein Häkchen am linken Rand des ToolStripMenuItem angezeigt wird.

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

Eigenschaftswert

Boolean

true, wenn der Aktivierungsrand angezeigt wird, andernfalls false. Der Standardwert ist false.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie Sie ein ContextMenuStrip Steuerelement erstellen und initialisieren, indem Sie die Prüf- und Bildränder festlegen. Eine vollständige Codeauflistung finden Sie unter Vorgehensweise: Aktivieren von Rändern und Bildrändern in ContextMenuStrip-Steuerelementen.

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

Hinweise

Legen Sie die ShowCheckMargin -Eigenschaft auf fest true , um ein Häkchen anzuzeigen, wenn der Benutzer das ToolStripMenuItemauswähckt.

Gilt für:

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