drag&drop from thumbnail browser to ContainerViewer?

I am using v14.5, and VB.NET

I want to drag & drop images from RasterThumbnailBrowser to
one of boxes of AxLTRASTERCONVIEWLib.AxLEADRasterContainerViewer.
How?  ContainerViewer doesn't seem to support drag and drop events.

If drag&drop is not possible, I want to at least intercept click event
on the ContainerViewer.  How?

There seems to be a limitation in Visual Studio .NET because
one of my colleagues tried in the past and could not get Drag Drop events to
work in a different ActiveX control. He found the following remark on Microsoft web site:
"The DragDrop event is not supported by the AxHost class."
This is the class that wraps the ActiveX controls when they are added to Visual Studio .NET
The source of the remark is: http://msdn.microsoft.co...stclassdragdroptopic.asp

To get click events, the following code sample causes
left-click mouse action to copy the image to a LEADRasterView OCX control on the same form.

private void button1_Click(object sender, System.EventArgs e)
{
   LTRASTERIOLib.LEADRasterIO io = new LTRASTERIOLib.LEADRasterIOClass();
   LTRASTERLib.LEADRaster ras = new LTRASTERLib.LEADRasterClass();
   io.Load(ras, "c:\\temp\\11.jpg", 0, 1, 1);
   short i = axLEADRasterContainerViewer1.InsertCell(-1, 0);
   axLEADRasterContainerViewer1.Cell(i).InsertBitmapList(ras, true, 0);
   io.Load(ras, "c:\\temp\\ocr1.tif", 0, 1, 1);
   i = axLEADRasterContainerViewer1.InsertCell(-1, 0);
   axLEADRasterContainerViewer1.Cell(i).InsertBitmapList(ras, true, 0);
   if(!axLEADRasterContainerViewer1.OwnerAction(0).Use)
      axLEADRasterContainerViewer1.OwnerAction(0).ActivateAction(true, 0);
   axLEADRasterContainerViewer1.OwnerAction(0).SetMouseButtonAction(      LTRASTERCONVIEWLib.MouseButtonConstants.CONVIEW_MOUSE_BUTTON_LEFT,     (int)(LTRASTERCONVIEWLib.SetActionConstants.CONVIEW_ACTION_ACTIVEONLY
      | LTRASTERCONVIEWLib.SetActionConstants.CONVIEW_ACTION_REALTIME));
}

private void
axLEADRasterContainerViewer1_MouseDownEvent(object sender, AxLTRASTERCONVIEWLib._ILEADRasterContainerViewerEvents_MouseDownEvent e)
{
   LTRASTERLib.LEADRaster ras;
   for(int i=0; i<axLEADRasterContainerViewer1.CellCount; ++i)
      if(axLEADRasterContainerViewer1.Cell(i).Select)
      {
         ras = (LTRASTERLib.LEADRaster)axLEADRasterContainerViewer1.Cell(i).BitmapListUnk;
         axLEADRasterView1.Raster.Bitmap = ras.Bitmap;
         axLEADRasterContainerViewer1.Cell(i).Select = false;
      }
}