Sets the path that the dialog will use to filter
the directories it shows to the argument, which may
be null. If the string is null, then the operating
system's default filter path will be used.
<p>
Note that the path string is platform dependent.
For convenience, either '/' or '\' can be used
as a path separator.
</p>
Sets the path that the dialog will use to filter the directories it shows to the argument, which may be null. If the string is null, then the operating system's default filter path will be used. <p> Note that the path string is platform dependent. For convenience, either '/' or '\' can be used as a path separator. </p>
@param string the filter path