This package contains the libraries, header files and developer documentation that are needed for writing applications with the GTK+ widget toolkit.
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The pango-devel package includes the header files and developer documentation for the pango package.
The libXres-devel package contains libraries and header files for libXres.
The libX11-devel package contains libraries and header files for libX11.
The libwnck-devel package contains libraries and header files for developing applications that use libwnck.
libwnck (pronounced "libwink") 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.
Development files of startup-notification
Development files for startup-notification.
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.