lsr@apple.UUCP (08/22/86)
Recently there was a message concerning funny behavior in OpenResFile. I
lost the original message, but the answer is described in Tech Note #78.
On the 64K ROM, there was a patch to OpenResFile that checks to see if the
string being passed is the name of a printer, by inspecting the high bits of
the pointer to the file name. If the high bits indicate a resource, then
the patch will call RecoverHandle on the alleged handle, which will crash if
the pointer is not to a resource..
The fix is to mask off the high-order byte of the address you pass to
OpenResFile, to ensure that it is not flagged as a resource.
--
Larry Rosenstein
Object Specialist
Apple Computer
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