[SoClose]

Has anyone successfully used the NSFoundation function call NSHFSTypeCodeFromFileType()? I'm passing it a four character NSString, but it's always returning zero. I am, naively perhaps, assuming that NSHFSTypeCodeFromFileType will take any four character NSString and turn it into an OSType, not just file types that the system knows about.

[Diggory Laycock]

Read the docs again:

(from http://developer.apple.com/techpubs/macosx/Cocoa/Referen ce/Foundation/ObjC_classic/Functions/FoundationFunctions.html)

Given a string of the sort encoded by NSFileTypeForHFSTypeCode(), this function returns the corresponding HFS file type code. It returns zero otherwise.

and more importantly from (http://developer.apple.com/techpubs/macosx/Cocoa/TasksAndConcepts/ProgrammingTopics/LowLevelFileMgmt/Concepts/HFSFileTypes.html):

Classic HFS file types are specified by a 32-bit integer (OSType), usually represented as four characters, such as GIFf or MooV. Cocoa cannot directly use HFS file types in this form, so they must be encoded into an NSString (or Java String). The encoded HFS file type is surrounded by apostrophes, like so:

'<HFS Four Character File Type Code>'


Thus, the type of a typical Mac OS 9 text file can be specified by the Objective-C string @"'TEXT'".

spaced so you can read it better: " ' TEXT ' "

Hope this helps - it confused me first time as well

[ 03-10-2002: Message edited by: Diggory Laycock ]