TVirtualStringTree.DragType Property

Read or set which subsystem should be used for dragging.

property DragType: TVTDragType;

Traditionally, Delphi only supports its own drag mechanism, which is not compatible with the rest of the system. This VCL dragging also does not support to transport random data nor does it support drag operations between applications. Thus Virtual Treeview also supports the generally used OLE dragging, which in turn is incompatible with VCL dragging. Depending on your needs you can enable either VCL or OLE dragging as both together cannot be started. However, Virtual Treeview is able to act as drop target for both kind of data, independant of what is set in DragType.

TVirtualStringTree Class