Initialization and Versions Library version numbers. These macros and variables let you check the version of &gdk-pixbuf; you're linking against. Contains the full version of the &gdk-pixbuf; library as a string. This is the version currently in use by a running program. Contains the full version of the &gdk-pixbuf; header as a string. This is the version being compiled against; contrast with #gdk_pixbuf_version. Major version of &gdk-pixbuf; library, that is the first "0" in "0.8.0" for example. Minor version of &gdk-pixbuf; library, that is the "8" in "0.8.0" for example. Micro version of &gdk-pixbuf; library, that is the last "0" in "0.8.0" for example.