Checks that the Pango library in use is compatible with the given version. Generally you would pass in the constants %PANGO_VERSION_MAJOR, %PANGO_VERSION_MINOR, %PANGO_VERSION_MICRO as the three arguments to this function; that produces a check that the library in use at run-time is compatible with the version of Pango the application or module was compiled against.
This is similar to the macro %PANGO_VERSION_STRING except that it returns the version of Pango available at run-time, as opposed to the version available at compile-time.
This is similar to the macro %PANGO_VERSION except that it returns the encoded version of Pango available at run-time, as opposed to the version available at compile-time.