The pango-devel package includes the header files and developer documentation for the pango package.
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The libX11-devel package contains libraries and header files for libX11.
Development files of startup-notification
Development files for startup-notification.
libwnck is used to implement pagers, tasklists, and other such things. It allows applications to monitor information about open windows, workspaces, their names/icons, and so forth.
This package contains libraries, header files and developer documentation needed for developing software which uses the cairo graphics library and cairo GObject library and contains tools for working with the cairo graphics library as well.
This package contains the libraries, header files other development files for GTK+ 3.
The libwnck3-devel package contains libraries and header files for libwnck3.
The libXres-devel package contains libraries and header files for libXres.