Hi,

well Drag & Drop handler changed massively because of using of pointer events. 
Now it looks like the pointer move will be prevented, how ever.
Feel free to open a bug, but I would advise you to overlay the iframe with an 
„drop target“ layer, which shows the user that an drop does change the whole 
iframe not even the DOM element you spotted inside the iframe.

May be this workaround can solve your D&D issue and improves your user 
experience.
Dank & Gruß
Mustafa Sak
Softwareentwickler
Mail Development
1&1 Mail & Media Development & Technology GmbH | Brauerstraße 48 | 76135 
Karlsruhe | Germany
Phone: +49 721 91374-6977
E-Mail: mustafa....@1und1.de<mailto:mustafa....@1und1.de> | Web: 
www.1und1.de<http://www.1und1.de/>

Von: Qoo Goo [mailto:qoo...@gmail.com]
Gesendet: Mittwoch, 29. Juli 2015 14:27
An: qooxdoo Development
Betreff: [qooxdoo-devel] Dragging over an iFrame no longer works when migrating 
to qx 5.0

Hi,

I am migrating an application from Qooxdoo 3.5.1 to 5.0 and, after fixing some 
behaviour changes related to events (click to tap and so), I'm stuck with a 
problem dragging onto an iframe.

The problem is that when dragging elements onto the iframe, the drag event 
seems to get stalled at the limit of the iframe. You cannot enter the iframe 
keeping the drag active (it's curious because if you capture the event in the 
parent as I do in my app and you enter the iframe passing over a zone not 
occupied by the iframe, then it seems it seems it captures the event, but in 
any case the "dragover" event doesn't work).

In the examples I put below, you'll see that if you enter the iframe from the 
top of the window, it doesn't work as I would expect (as it did in 3.5.1), but 
the drop event is caught. If, instead, you enter the iframe from the bottom 
(and dragging fast), it doesn't.

You can see how behaviours differ from Qx 3.5.1 to Qx 5.0 in following links to 
the playground.

3.5.1:
http://tinyurl.com/og6l97e

5.0:
http://tinyurl.com/nw3ur95

Does anybody know if Is this a bug or a behaviour change? If it is the 
behaviour change, how would you achieve the goal of dropping onto the iframe?

Thanks
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