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Trouble with tool bars

My first KDE4 to KF5 port has gone well and the app now compiles and runs 
without any warning messages. :) However, I am now trying to improve some 
things. I have a tool bar which is created by the XML support:

<Menu name="settings">
<MergeLocal name="show_toolbar_merge"/>
	<Action name="settings_main_toolbar" append="show_toolbar_merge"/>
	<Action name="settings_filter_toolbar" append="show_toolbar_merge"/>
<MergeLocal name="show_merge"/>
<ToolBar name="filterToolBar" orientation="bottom">
	<text>Filter Toolbar</text>
    <Action name="filter_icon"/>
    <Action name="filter_edit"/>

I want to add a short-cut to one of the tool bars but I don't have a QAction 
for it. I tried listing the contents of actionCollection()->actions() but 
neither of the tool bars appeared. How do I find the QAction?

Secondly I want to give a line-edit widget in one of the tool bars focus when 
the bar becomes visible, so I tried:

connect( toolBar( fTB ), &KToolBar::visibilityChanged, this, 
&KmTail::toolBarVisible );

There are no runtime warning messages but the slot is never driven. What am I 


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