Version Checking Tools for checking Pango version at compile- and run-time. The capital-letter macros defined here can be used to check the version of Pango at compile-time, and to encode Pango versions into integers. The functions can be used to check the version of the linked Pango library at run-time. This macro encodes the given Pango version into an integer. The numbers returned by %PANGO_VERSION and pango_version() are encoded using this macro. Two encoded version numbers can be compared as integers. @major: the major component of the version number @minor: the minor component of the version number @micro: the micro component of the version number The version of Pango available at compile-time, encoded using PANGO_VERSION_ENCODE(). The major component of the version of Pango available at compile-time. The minor component of the version of Pango available at compile-time. The micro component of the version of Pango available at compile-time. A string literal containing the version of Pango available at compile-time. Checks that the version of Pango available at compile-time is not older than the provided version number. @major: the major component of the version number @minor: the minor component of the version number @micro: the micro component of the version number @Returns: @Returns: @required_major: @required_minor: @required_micro: @Returns: