Hello,

I tried to implement OLE drag & drop functionality from another component into the FlowChartX component. It all works well until I actually have to get the data out of the DataObject. I.e.

Private Sub Chart_DragOverBoxVB(ByVal box As FLOWCHARTLibCtl.IBoxItem, ByVal dataObj As FLOWCHARTLibCtl.IVBDataObject, ByVal docX As Long, ByVal docY As Long, ByVal keyState As Long, effect As Long)
  If Not dataObj.GetFormat(ClayClipBoard) Then
   effect = 0
   Exit Sub
  End If
  Call dataObj.GetData(ClayClipBoard)

The GetFormat returns true, but GetData returns Empty. This also happens even if I use text format (vbCFText instead of my custom format 'ClayClipBoard')

I know it isn't empty because if I drag it onto another of my components, the GetData works fine there.

Also I am using FlowChartX v4.2
Is this a bug that has been fixed by any chance? Or am I doing something wrong?

Well I tested text and that didn't work either - I got 'Empty'. I'll check out the sample project in a couple of days when I get back and see if that works...

The problem with using text is that I wanted to differentiate it from other OLE drag objects somehow. It works perfectly with all the other components in my app except the chart and I'd rather not redo all my code just for the chart. The custom clipboard format is a simple byte array...

Our developer tried reusing the flowchart's DataObject.GetData method to return a byte array as VARIANT of SAFEARRAY of bytes, but VB shows an "Automation type not supported" error. Could you post some sample code showing how are you reading the byte arrays from your other controls? If possible please copy the IDL method definition shown by OLE/COM Object Viewer tool.