Tidy up DropArea documentation.

The delegate property was removed because it doesn't exist.

Change-Id: I010880773629868f3c640c0a4ed34f132454d2f7
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
QQuickWidget: handle hide and show events properly

Task-number: QTBUG-37062
Change-Id: I3763385168eaa0ccd009ada563f56ea0251029a5
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Fixed regression from fd5c629f4336b1f79

Buffer offsets were wrong, and a type
in the buffer content.

Task-number: QTBUG-36989

Change-Id: I863976420d495b006692c4b614f74c285649cb1a
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>