FrameworkContentElement.ContextMenuClosing イベント

定義

要素のコンテキスト メニューが閉じる直前に発生します。Occurs just before any context menu on the element is closed.

public:
 event System::Windows::Controls::ContextMenuEventHandler ^ ContextMenuClosing;
public event System.Windows.Controls.ContextMenuEventHandler ContextMenuClosing;
member this.ContextMenuClosing : System.Windows.Controls.ContextMenuEventHandler 
Public Custom Event ContextMenuClosing As ContextMenuEventHandler 

次の例では、DisplayArea (表示されていない) 名前付き領域の上にカーソルを変更するハンドラーを実装しています。The following example implements a handler that changes the cursor over a named region DisplayArea (not shown). コメントヒントは UIElement 使用されますが、実際には、DisplayAreaFrameworkContentElementの場合、このサンプルは同じになります。The comment hints at a UIElement usage, but in fact this sample would be identical if DisplayArea were a FrameworkContentElement.

private void CursorTypeChanged(object sender, SelectionChangedEventArgs e)
{
    ComboBox source = e.Source as ComboBox;

    if (source != null)
    {
        ComboBoxItem selectedCursor = source.SelectedItem as ComboBoxItem;

        // Changing the cursor of the Border control 
        // by setting the Cursor property
        switch (selectedCursor.Content.ToString())
        {
            case "AppStarting":
                DisplayArea.Cursor = Cursors.AppStarting;
                break;
            case "ArrowCD":                        
                DisplayArea.Cursor = Cursors.ArrowCD;
                break;
            case "Arrow":
                DisplayArea.Cursor = Cursors.Arrow;
                break;
            case "Cross":
                DisplayArea.Cursor = Cursors.Cross;
                break;
            case "HandCursor":
                DisplayArea.Cursor = Cursors.Hand;
                break;
            case "Help":
                DisplayArea.Cursor = Cursors.Help;
                break;
            case "IBeam":
                DisplayArea.Cursor = Cursors.IBeam;
                break;
            case "No":
                DisplayArea.Cursor = Cursors.No;
                break;
            case "None":
                DisplayArea.Cursor = Cursors.None;
                break;
            case "Pen":
                DisplayArea.Cursor = Cursors.Pen;
                break;
            case "ScrollSE":
                DisplayArea.Cursor = Cursors.ScrollSE;
                break;
            case "ScrollWE":
                DisplayArea.Cursor = Cursors.ScrollWE;
                break;
            case "SizeAll":
                DisplayArea.Cursor = Cursors.SizeAll;
                break;
            case "SizeNESW":
                DisplayArea.Cursor = Cursors.SizeNESW;
                break;
            case "SizeNS":
                DisplayArea.Cursor = Cursors.SizeNS;
                break;
            case "SizeNWSE":
                DisplayArea.Cursor = Cursors.SizeNWSE;
                break;
            case "SizeWE":
                DisplayArea.Cursor = Cursors.SizeWE;
                break;
            case "UpArrow":
                DisplayArea.Cursor = Cursors.UpArrow;
                break;
            case "WaitCursor":
                DisplayArea.Cursor = Cursors.Wait;
                break;
            case "Custom":
                DisplayArea.Cursor = CustomCursor;
                break;
            default:
                break;
        }

        // If the cursor scope is set to the entire application
        // Use OverrideCursor to force the cursor for all elements
        if (cursorScopeElementOnly == false)
        {
            Mouse.OverrideCursor = DisplayArea.Cursor;
        }
    }
}
' When the Radiobox changes, a new cursor type is set
Private Sub CursorTypeChanged(ByVal sender As Object, ByVal e As SelectionChangedEventArgs)

    Dim item As String = CType(e.Source, ComboBox).SelectedItem.Content.ToString()

    Select Case item
        Case "AppStarting"
            DisplayArea.Cursor = Cursors.AppStarting
        Case "ArrowCD"
            DisplayArea.Cursor = Cursors.ArrowCD
        Case "Arrow"
            DisplayArea.Cursor = Cursors.Arrow
        Case "Cross"
            DisplayArea.Cursor = Cursors.Cross
        Case "HandCursor"
            DisplayArea.Cursor = Cursors.Hand
        Case "Help"
            DisplayArea.Cursor = Cursors.Help
        Case "IBeam"
            DisplayArea.Cursor = Cursors.IBeam
        Case "No"
            DisplayArea.Cursor = Cursors.No
        Case "None"
            DisplayArea.Cursor = Cursors.None
        Case "Pen"
            DisplayArea.Cursor = Cursors.Pen
        Case "ScrollSE"
            DisplayArea.Cursor = Cursors.ScrollSE
        Case "ScrollWE"
            DisplayArea.Cursor = Cursors.ScrollWE
        Case "SizeAll"
            DisplayArea.Cursor = Cursors.SizeAll
        Case "SizeNESW"
            DisplayArea.Cursor = Cursors.SizeNESW
        Case "SizeNS"
            DisplayArea.Cursor = Cursors.SizeNS
        Case "SizeNWSE"
            DisplayArea.Cursor = Cursors.SizeNWSE
        Case "SizeWE"
            DisplayArea.Cursor = Cursors.SizeWE
        Case "UpArrow"
            DisplayArea.Cursor = Cursors.UpArrow
        Case "WaitCursor"
            DisplayArea.Cursor = Cursors.Wait
        Case "Custom"
            DisplayArea.Cursor = CustomCursor
    End Select

    ' if the cursor scope is set to the entire application
    ' use OverrideCursor to force the cursor for all elements
    If (cursorScopeElementOnly = False) Then
        Mouse.OverrideCursor = DisplayArea.Cursor
    End If


End Sub

注釈

コンテキストメニューを終了しないようにするには、イベントのハンドラーがそれを処理済みとしてマークする必要があります。To suppress closing context menus, handlers of the event should mark it as handled.

このイベントをスタイルの EventTrigger として使用するには、基になるサービスイベント識別子を参照する必要があります。To use this event as an EventTrigger in a style, you must reference the underlying service event identifier:

<EventTrigger RoutedEvent="ContextMenuService.ContextMenuClosing">
  <!-- storyboard here ... -->
</EventTrigger>

(この使用方法が必要なのは、基になるサービスイベントを公開する FrameworkContentElement のイベント実装が、トリガーで使用する ContextMenuClosing 識別子を正しくマップしていないためです)。(This usage is required because the event implementation on FrameworkContentElement that exposes the underlying service event does not correctly map the ContextMenuClosing identifier for use in triggers).

ルーティングされたイベント情報Routed Event Information

識別子フィールドIdentifier field ContextMenuClosingEvent
ルーティング方法Routing strategy バブリングBubbling
DelegateDelegate ContextMenuEventHandler

適用対象

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