libgucharmap-2-90-dev 1:3.2.0-0ubuntu1 (amd64 binary) in ubuntu oneiric

 The libgucharmap library contains a Unicode browser widget; it is
 most prominently used by the "gucharmap" program. See the package of
 the same name for more information.
 .
 This package contains the development headers for the GTK+ 3 version.