hasPrefix
Checks whether @file has the prefix specified by @prefix.
In other words, if the names of initial elements of @file's pathname match @prefix. Only full pathname elements are matched, so a path like /foo is not considered a prefix of /foobar, only of /foo/bar.
A #GFile is not a prefix of itself. If you want to check for equality, use g_file_equal().
This call does no I/O, as it works purely on names. As such it can sometimes return false even if @file is inside a @prefix (from a filesystem point of view), because the prefix of @file is an alias of @prefix.
Return
true if the @file's parent, grandparent, etc is @prefix, false otherwise.
Parameters
prefix
input #GFile