StandardGetFolder example

	Steve Falkenburg -- MacDTS
	
	This sample uses the new System 7 CustomGetFile routine
	to provide a StandardGetFolder call to be used by applications
	when the user needs to select a folder instead of a file.
	
	It's written in Think C, but should work in MPW if a few #include
	files are added.
	
	The style of the dialog box is taken from the Human Interface note
	on folder selection.
	
	10/30/91

-------------------

5/2/92 -- added check for refCon==sfMainDialogRefCon in filter and hook routines
   for compatibility with things which throw up windows in front of standard file.

5/2/92 -- added MakeFSSpec call to insure that the filename field in the fsspec gets
   filled in.
