Drag events are related to Drag’n’Drop, and you rarely drag from or drop onto a 
scroll bar.

The Qt documentation is quite clear about the role of those event types, I 
think:

https://doc.qt.io/qt-5/qevent.html#Type-enum
https://doc.qt.io/qt-5/qdropevent.html


Volker


> On 24 Nov 2020, at 11:48, Ramakanth Kesireddy <rama.k...@gmail.com> wrote:
> 
> One question..Found dragging scrollbar triggers MouseMove instead of drag 
> events..When we drag scrollbar, is it expected to trigger 
> DragEnter,DragMove,DragLeave instead(as verified in the event filter) in the 
> custom QTableView which sets QScrollbar? 
> 
> Best Regards,
> Ramakanth
> 
> On Tue, 24 Nov, 2020, 14:38 Ramakanth Kesireddy, <rama.k...@gmail.com> wrote:
> Sure.. Thanks for your mail. Shall test on the latest Qt.
> The issue is reproduced on both X11(ubuntu desktop) and linuxFB with tslib as 
> backend.
> 
> On Tue, 24 Nov, 2020, 13:16 Thiago Macieira, <thiago.macie...@intel.com> 
> wrote:
> On Monday, 23 November 2020 21:32:10 PST Ramakanth Kesireddy wrote:
> > UI Application is Qt 5.6.3 widgets based on 4.14 linux kernel built with
> > yocto meta-qt5 recipes.
> 
> Please retest with the latest first (latest Qt and latest Yocto).
> 
> And if you're not using X11, please be explicit on what backend it is and 
> what 
> mouse input driver you're using.
> 
> -- 
> Thiago Macieira - thiago.macieira (AT) intel.com
>   Software Architect - Intel DPG Cloud Engineering
> 
> 
> 
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