Version Information variables and functions to check the GTK+ version. This section describes the variables and functions available to test the version of the GTK+ library in use. FIXME: probably merge with other general stuff. The major version number of the GTK+ library. (e.g. in GTK+ version 1.2.5 this is 1.) The minor version number of the GTK+ library. (e.g. in GTK+ version 1.2.5 this is 2.) The micro version number of the GTK+ library. (e.g. in GTK+ version 1.2.5 this is 5.) Checks that the GTK+ library in use is compatable with the given version. @required_major: the required major version. @required_minor: the required major version. @required_micro: the required major version. @Returns: NULL if the GTK+ library is compatable with the given version, or a string describing the version mismatch. @major: @minor: @micro: