Preventing drop/drag outside the main window

[aamer4yu]

Uh like? Even "snork" as mime type works on some greedy apps they just take everything

hmm... i am not sure how to disable the drag and drop of other application from your application. But one thing more I can suggest.
You can check the window/ widget which accepted the drop by drag->target() function. Hence based on the window that accepted the drag, you can perform actions in your application. Hope this might help you