Resource files and Carbon - PLEASE HELP!

[Vern Jensen]

I've been messing with this for hours, and am at my wit's end. If anyone
has an ideas, please help!

I find that when using FSpOpenResFile as a Carbon-compatible replacement
to the old OpenResFile, that my res files no longer behave as they used
to. Previously, I could open many files, and when trying to load a given
resource, if it didn't exist in the current file, other open resource
files would be searched, going backwards in the order that I opened them.

But once I switch to FSpOpenResFile, I seem to have to use UseResFile()
to switch between current files, since I seem to only be able to read
from the current file, even though I'm using GetResource (not
Get1Resource).

Is there a way to fix this? Or do I just have to live with it?

Here's my Carbon-compatible replacement for OpenResFile:

short MyOpenResFile(Str255 fileName)
{
FSSpec dir, file;
Boolean targetIsFolder, wasAliased;
short curResRefNum;
OSErr err = noErr;

curResRefNum = -1;

// get directory of application
err = GetCurrentResFileDirectory(&dir);

if (err == noErr)
{
// get frame resource file, and resolve alias (if any)
err = FSMakeFSSpec(dir.vRefNum, dir.parID, fileName, &file );
}

if (err == noErr)
{
err = ResolveAliasFile( &file, true, &targetIsFolder,
&wasAliased);
}

if (err == noErr)
{
curResRefNum = FSpOpenResFile(&file,fsRdPerm);
}

return curResRefNum;
}

-Vern

--
--
EarthLink User <vernjensen@earthlink.net>

[Sebastian Wegner]

Hello Vern,

I'm not exactly sure about this, but I believe you cannot be sure in Carbon
that the opened resource file is appended to the end of the resource chain.

This must be the reason for Apple having added some new resource manager
calls for manipulating the resource chain.

Maybe a call to the function InsertResourceFile(file, kRsrcChainBelowAll)
after opening it will solve your problems.

I never had problems because I always called UseResFile after loading a
file.

----------------
Sebastian Wegner

[url]http://www.mcsebi.com/[/url]