[RE-OPENED] Drag&Drop in Iconview

Hi,

• wndReportControl..EnableDragDrop "SomeString", xtpReportAllowDrag + xtpReportAllowDrop
• and RecordsDropped event is fired whenever an icon is dropped somewhere.

If you can put together a small sample in IconView with icons, I can experiment for you. I've never really used IconView, so I don't want to spend too much time getting that up and running, I'd rather focus on the drag & drop part.

I haven't found anything too easy so far, but I have a couple of questions:

1) Why do you need the records collection to be in the same order before and after you move records?
2) Are you trying to have 2 different orders that records appear, one for icon view and one for report view?

If I can understand what you are trying to accomplish, I might come up with a different approach. For example, you can save the order of the records collection before the drop is completed in the DropRecordsEx. Something like:

Private mo_PreDropRecords As Collection Private Sub ReportControl1_DropRecordsEx(ByVal TargetRecord As XtremeReportControl.IReportRecord, ByVal Records As XtremeReportControl.IReportRecords, ByVal Above As Boolean)    Dim lo_Record As ReportRecord       Set mo_PreDropRecords = New Collection         For Each lo_Record In Me.ReportControl1.Records       mo_PreDropRecords.Add lo_Record    Next lo_Record End Sub

Then in the RecordsDropped event, you can get the post-dropped order to do comparisons against the pre-dropped order.

Could you use the Tag property of each ReportRecord to store the database ID? It might be easier than trying to fight the Drag & Drop implementation...so the Records collection order will change on Drop, and you can traverse the collection and test against the Tag property to find the database record index.

I was working on Drag & Drop with you-know-who a long time ago, but it was so painful, I gave up after a while. Maybe we can pick things up again with Andre.

I would prefer if there would be a setting where only the records would be moved

I'm a bit confused because as far as I can tell only the records are being move. What else is being moved that I am missing?


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I've attached a slightly modified demo that tries to preserve the Record positions, by intercepting the DragDrop and modifies the SortPriority on the fly. It seems to work, but only once. After that the Drop events stop firing. It would be nice to have some way to cancel the Drop in a BeforeDropRecords event.

Here's what I have so far:
uploads/2676/IconViewDragDrop.zip

uploads/2676/IconViewDragDrop2.zip

Seems we needed .SortedDragDrop = True. I've cleaned up the code a bit, but there are no comments so if you have any questions just get back to me.

It seems to be working okay, I haven't tested it too much though, so if there are any bugs, get back to me of course!

Sorry Aaron, I came down with a sudden fever yesterday, but I'm better today.

So far, I can get D&D to work twice now, but the bad news is that the more I fight with this, the more I think that it makes more sense to use the Tag property to store any "outside" information (such as DatabaseRecordID). You can even create a class to track multiple pieces of external information and then store instances of the class in each Tag property of each ReportRecord.

Maybe there could be a CJ implemented option to only move rows, and not affect the order of the records, but I'll leave that up to you and Andre to discuss.

Sorry I couldn't be more help.

jpbro wrote: Sorry Aaron, I came down with a sudden fever yesterday, but I'm better today. So far, I can get D&D to work twice now, but the bad news is that the more I fight with this, the more I think that it makes more sense to use the Tag property to store any "outside" information (such as DatabaseRecordID). You can even create a class to track multiple pieces of external information and then store instances of the class in each Tag property of each ReportRecord. Maybe there could be a CJ implemented option to only move rows, and not affect the order of the records, but I'll leave that up to you and Andre to discuss. Sorry I couldn't be more help.

• Drag&Drop in Iconview without changing the record collection (moving Rows)
• Would be nice if Drag&Drop in IconView showed an insertion point like it does in Report view as Jason proposed
• Thinking out loud: Have possibility to Cancel in DroppedRecords event. We can determine the position of the drop and we could set new .SortPriority value that will force the needed layout to be shown. This shouldn't be that difficult to do...