private void zoomctrl_PreviewDrop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(typeof(object)))
{
//how to get dragged data by its type
var myobject = e.Data.GetData(typeof(object)) as object;
var pos = zoomctrl.TranslatePoint(e.GetPosition(zoomctrl), Area);
var data = DataVertex.Create();
CreateVertex(Area, zoomctrl, data, pos.X, pos.Y);
}
}
public VertexOperation(GraphArea graph, DataVertex data = null, Action <DataVertex, VertexControl> callback = null, Action <DataVertex> undoCallback = null)
{
_graph = graph;
_callback = callback;
_undoCallback = undoCallback;
if (data != null)
{
_vertex = data;
}
else
{
_vertex = DataVertex.Create();
}
Status = Orc.GraphExplorer.Status.Init;
}
