versionCheck
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.
Compatibility is defined by two things: first the version of the running library is newer than the version
Return
null if the Pango library is compatible with the given version, or a string describing the version mismatch. The returned string is owned by Pango and should not be modified or freed.
Since
1.16
Parameters
requiredMajor
the required major version
requiredMinor
the required minor version
requiredMicro
the required major version