Function pango::version_check [−][src]
pub fn version_check(
required_major: i32,
required_minor: i32,
required_micro: i32
) -> Option<GString>
Expand description
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
required_major
.required_micro
. Second
the running library must be binary compatible with the
version required_major
.required_micro
(same major version.)
For compile-time version checking use PANGO_VERSION_CHECK().
required_major
the required major version.
required_minor
the required minor version.
required_micro
the required major version.
Returns
None
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.