pub fn minor_version() -> u32
Returns the minor version number of the GTK+ library. (e.g. in GTK+ version 3.1.5 this is 1.)
This function is in the library, so it represents the GTK+ library
your code is are running against. Contrast with the
GTK_MINOR_VERSION macro, which represents the minor version of the
GTK+ headers you have included when compiling your code.
the minor version number of the GTK+ library