linux-e42r:/home/robert # zypper se --provides libgdk
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Reading installed packages...

S | Name                        | Summary                                          | Type
--+-----------------------------+--------------------------------------------------+--------
  | gtk                         | A Library for the Creation of Graphical User I-> | package
  | gtk-32bit                   | A Library for the Creation of Graphical User I-> | package
  | gtk-sharp2                  | .Net Language Bindings for GTK+                  | package
i | libgdk_pixbuf-2_0-0         | An image loading library                         | package
i | libgdk_pixbuf-2_0-0-32bit   | An image loading library                         | package
i | libgtk-2_0-0                | The GTK+ toolkit library (version 2)             | package
  | libgtk-2_0-0-32bit          | The GTK+ toolkit library (version 2)             | package
i | libgtk-3-0                  | The GTK+ toolkit library (version 3)             | package
  | libgtk-3-0-32bit            | The GTK+ toolkit library (version 3)             | package
  | libgtkglext-x11-1_0-0       | OpenGL Extension to GTK                          | package
  | libgtkglext-x11-1_0-0-32bit | OpenGL Extension to GTK                          | package
  | libgtkmm-2_4-1              | C++ Interface for GTK2 (a GUI library for X)     | package
  | libgtkmm-2_4-1-32bit        | C++ Interface for GTK2 (a GUI library for X)     | package
  | libgtkmm-3_0-1              | C++ Interface for GTK3 (a GUI library for X)     | package
  | libgtkmm-3_0-1-32bit        | C++ Interface for GTK3 (a GUI library for X)     | package