[LyX/2.2.x] ShortcutOverride again

[Guillaume Munch]

commit 203136d2872444ccf3ca05d1a623dd6de56676a2
Author: Guillaume Munch <g...@lyx.org>
Date:   Mon Jun 13 07:39:04 2016 +0100

    ShortcutOverride again
    
    Re: fix for #9218 (not #10119)
    
    Now it matches the example given in the docs. This time tested on qt4.

diff --git a/src/frontends/qt4/GuiWorkArea.cpp 
b/src/frontends/qt4/GuiWorkArea.cpp
index a18294e..7cb732e 100644
--- a/src/frontends/qt4/GuiWorkArea.cpp
+++ b/src/frontends/qt4/GuiWorkArea.cpp
@@ -724,7 +724,7 @@ bool GuiWorkArea::event(QEvent * e)
                return true;
        }
 
-       case QEvent::ShortcutOverride: {
+       case QEvent::KeyPress: {
                // We catch this event in order to catch the Tab or Shift+Tab 
key press
                // which are otherwise reserved to focus switching between 
controls
                // within a dialog.
@@ -733,7 +733,7 @@ bool GuiWorkArea::event(QEvent * e)
                        || (ke->key() == Qt::Key_Backtab && (
                                ke->modifiers() == Qt::ShiftModifier
                                || ke->modifiers() == Qt::NoModifier))) {
-                       e->accept();
+                       keyPressEvent(ke);
                        return true;
                }
                return QAbstractScrollArea::event(e);