bug#50993: 29.0.50; Problems when dragging the mouse over the toolbar

[Po Lu]

martin rudalics <rudalics@gmx.at> writes:

> I'm too silly to understand how this is related to the issue at hand.
> Can you please elaborate?

AFAIU, mouse-movement events generated by moving the mouse over the
toolbar don't contain a window, but rather the frame the toolbar belongs
to.

However, mouse-drag-track wants START-EVENT to contain a window.

> So far I've been unable to reproduce this issue on Emacs 28.  Doesn't
> 'mouse-drag-track', once started, conceptually have to get through
> wherever the mouse pointer is - a child frame, the tool bar, another
> frame, no frame at all?  Like scroll bar dragging with the mouse?

You need a build without toolkit tool bars, I think.