Error Message in Glade 3.16.1 'Placeholder text' of object class 'Text Entry' was introduced in gtk+ 3.2

<[email protected]> Thu, 31 Jul 2014 12:55:40 -0700
Newsgroups gmane.comp.gnome.glade.user
Message-ID <20140731125540.189eb7faca6c8ab0ebd61de961b7d6a0.ec24a1dcc8.wbe@email14.secureserver.net>
I use gtkmm with the defualt GCC tool chain on Ubuntu, and I just upgraded from Ubuntu 12.04 LTS to 14.04 LTS.

I have Glade project file that uses gtk::TextEntry widgets. When I opened it in Glade after upgrading, I got this message when I tried to save the Glade file.

[window1:frame1:box1:layout1:spinbutton3] Property 'Placeholder text' of object class 'Text Entry' was introduced in gtk+ 3.2. ]

When I build and run the C++ project the text entry boxes also don't look right - widgets aren't rendered correctly and the labels I put up there are skewed. This was all working fine before the upgrade. Apparently the upgrade removed some of the newer gtk+ packages that I had installed - I can't retrace my steps now, but I did not build it from the source previously.

Apparently gtk+ 3.2. ] is missing after Ubuntu 12.04->14.04 LTS upgrade - how can I install this packag

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