Exemple #1
0
    protected override void OnMouseMove(MouseEventArgs e)
    {
      base.OnMouseMove(e);
      if (e.LeftButton != MouseButtonState.Pressed)
        dragStartPoint = null;

      if (dragStartPoint.HasValue)
      {
        // XamlWriter.Save() has limitations in exactly what is serialized,
        // see SDK documentation; short term solution only;
        var xamlString = XamlWriter.Save(Content);
        var dataObject = new DragObject();
        dataObject.Xaml = xamlString;

        var panel = VisualTreeHelper.GetParent(this) as WrapPanel;
        if (panel != null)
        {
          // desired size for DesignerCanvas is the stretched Toolbox item size
          var scale = 1.3;
          dataObject.DesiredSize = new Size(panel.ItemWidth*scale, panel.ItemHeight*scale);
        }

        DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Copy);

        e.Handled = true;
      }
    }
    private void UIElement_OnMouseMove(object sender, MouseEventArgs e)
    {
      OnMouseMove(e);
      var senderFrameworkElement = sender as FrameworkElement;
      if (senderFrameworkElement == null)
      {
        return;
      }

      if (e.LeftButton == MouseButtonState.Pressed)
      {
        // Package the data.
        var vm = senderFrameworkElement.DataContext as InitialElementViewModel;
        if (vm == null)
        {
          return;
        }

        //DataObject data = new DataObject();
        //data.SetData(DataFormats.StringFormat, vm.Name);
        ////data.SetData("Double", circleUI.Height);
        //data.SetData("Object", vm);
        //data.SetText(vm.Name);
        //data.SetText();

        //var data = new DataObject();


        //// Inititate the drag-and-drop operation.
        //DragDrop.DoDragDrop(this, data, DragDropEffects.Copy | DragDropEffects.Move);

        var dataObject = new DragObject();
        dataObject.Xaml = string.Empty;
        dataObject.InitialElementViewModel = vm;

        var panel = VisualTreeHelper.GetParent(this) as WrapPanel;
        if (panel != null)
        {
          // desired size for DesignerCanvas is the stretched Toolbox item size
          var scale = 1.3;
          dataObject.DesiredSize = new Size(panel.ItemWidth*scale, panel.ItemHeight*scale);
        }
        else
        {
          dataObject.DesiredSize = new Size(100, 100);
        }

        DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Copy);

        e.Handled = true;
      }
    }