QueryContinueDragEventArgs.Action 속성

정의

네임스페이스:

System.Windows.Forms

어셈블리:

System.Windows.Forms.dll

끌어서 놓기 작업의 상태를 가져오거나 설정합니다.

public:
 property System::Windows::Forms::DragAction Action { System::Windows::Forms::DragAction get(); void set(System::Windows::Forms::DragAction value); };

public System.Windows.Forms.DragAction Action { get; set; }

member this.Action : System.Windows.Forms.DragAction with get, set

Public Property Action As DragAction

속성 값

DragAction

DragAction 값입니다.

예제

이 코드 발췌에서는 클래스를 QueryContinueDragEventArgs 이벤트와 함께 사용하는 방법을 보여 줍니다 QueryContinueDrag . 참조 된 DoDragDrop 전체 코드 예제에 대 한 메서드.

void ListDragSource_QueryContinueDrag( Object^ sender, System::Windows::Forms::QueryContinueDragEventArgs^ e )
{
   // Cancel the drag if the mouse moves off the form.
   ListBox^ lb = dynamic_cast<ListBox^>(sender);
   if ( lb != nullptr )
   {
      Form^ f = lb->FindForm();

      // Cancel the drag if the mouse moves off the form. The screenOffset
      // takes into account any desktop bands that may be at the top or left
      // side of the screen.
      if ( ((Control::MousePosition.X - screenOffset.X) < f->DesktopBounds.Left) || ((Control::MousePosition.X - screenOffset.X) > f->DesktopBounds.Right) || ((Control::MousePosition.Y - screenOffset.Y) < f->DesktopBounds.Top) || ((Control::MousePosition.Y - screenOffset.Y) > f->DesktopBounds.Bottom) )
      {
         e->Action = DragAction::Cancel;
      }
   }
}

private void ListDragSource_QueryContinueDrag(object sender, QueryContinueDragEventArgs e)
{
    // Cancel the drag if the mouse moves off the form.
    ListBox lb = sender as ListBox;

    if (lb != null)
    {
        Form f = lb.FindForm();

        // Cancel the drag if the mouse moves off the form. The screenOffset
        // takes into account any desktop bands that may be at the top or left
        // side of the screen.
        if (((Control.MousePosition.X - screenOffset.X) < f.DesktopBounds.Left) ||
            ((Control.MousePosition.X - screenOffset.X) > f.DesktopBounds.Right) ||
            ((Control.MousePosition.Y - screenOffset.Y) < f.DesktopBounds.Top) ||
            ((Control.MousePosition.Y - screenOffset.Y) > f.DesktopBounds.Bottom))
        {
            e.Action = DragAction.Cancel;
        }
    }
}

Private Sub ListDragSource_QueryContinueDrag(ByVal sender As Object, ByVal e As QueryContinueDragEventArgs) Handles ListDragSource.QueryContinueDrag
    ' Cancel the drag if the mouse moves off the form.
    Dim lb As ListBox = CType(sender, ListBox)

    If (lb IsNot Nothing) Then

        Dim f As Form = lb.FindForm()

        ' Cancel the drag if the mouse moves off the form. The screenOffset
        ' takes into account any desktop bands that may be at the top or left
        ' side of the screen.
        If (((Control.MousePosition.X - screenOffset.X) < f.DesktopBounds.Left) Or
            ((Control.MousePosition.X - screenOffset.X) > f.DesktopBounds.Right) Or
            ((Control.MousePosition.Y - screenOffset.Y) < f.DesktopBounds.Top) Or
            ((Control.MousePosition.Y - screenOffset.Y) > f.DesktopBounds.Bottom)) Then

            e.Action = DragAction.Cancel
        End If
    End If
End Sub

설명

기본적으로 Esc 키를 누른 경우 QueryContinueDrag 이벤트는 Action을 DragAction.Cancel로 설정하고 마우스 왼쪽, 가운데 또는 오른쪽 단추를 누른 경우 Action을 DragAction.Drop으로 설정합니다.

추가 정보

• DragAction
• DoDragDrop(Object, DragDropEffects)