Inside Macintosh: More Macintosh Toolbox /

Chapter 1 - Resource Manager / Resource Manager Reference

Resource Manager Routines / Getting and Setting the Current Resource File

HomeResFile

To get the file reference number associated with a particular resource, use the HomeResFile function.

FUNCTION HomeResFile (theResource: Handle): Integer;

theResource

A handle to a resource.

DESCRIPTION

Given a handle to a resource, the HomeResFile function returns the file reference number for the resource fork containing the specified resource. If the given handle isn't a handle to a resource, HomeResFile returns -1, and the ResError function returns the result code resNotFound. If HomeResFile returns 0, the resource is in the System file's resource fork. If HomeResFile returns 1, the resource is ROM-resident.

RESULT CODES

noErr	0	No error
resNotFound	-192	Resource not found

SEE ALSO

To check for errors, call the ResError function as described on page 1-47.