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[Octave-bug-tracker] [bug #56857] ButtonDownFcn and KeyPressFcn callback

From: Pantxo Diribarne
Subject: [Octave-bug-tracker] [bug #56857] ButtonDownFcn and KeyPressFcn callbacks not executing
Date: Wed, 4 Sep 2019 16:25:24 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0

Follow-up Comment #2, bug #56857 (project octave):

I think the issue is that we emit signals from the Canvas Object that are not
connected to any slot. IIUC we currently only make the necessary connections
for top level Object (which have their graphics_object counterpart) after
their creation in qt_graphics_toolkit::create_object. Ccing jwe who made the
relevant changes:

changeset:   27319:6b2d20317b26
user:        John W. Eaton <address@hidden>
date:        Fri Aug 02 15:19:43 2019 -0500
summary:     use Qt signals to manage calls to gh_manager functions in Qt
graphics toolkit


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