ImGearThumbnailCtl Class control supports internally implemented Drag-and-Drop operations that can be enabled or disabled via the DragDropOptions Property. If the ImGearDragDropOptions Enumeration.Drag flag is set, then the thumbnail browser will operate as a source of file Drag operation. If the ImGearDragDropOptions Enumeration.Drop flag is set, then the thumbnail browser will be able to receive the image files via a Drop operation.