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Re: Want to know about resources of Resource fork


On Jun 29, 2006, at 10:50 AM, Philip Aker wrote:

Direct support in CarbonEvents:
enum {
kEventClassResource = 'rsrc',
kEventResourceRead = 'read',
kEventResourceAdd = 'radd',
kEventResourceUpdate = 'upda',
....

I don't see what you mean here. Example?

Say I have a text document with some associated particulars like window size, marks, selection, etc. that I'd like to have stored in the file's resource fork. I keep the marks in a CFDictionaryRef. I would concoct an event something like:

err = CreateEvent( kCFAllocatorDefault, kEventClassResource, kEventResourceAdd, GetCurrentEventTime(), attributes, &eref );
err = SetEventParameter( eref, kEventParamDirectObject, typeCFTypeRef, sizeof( dict ), &dict );
err = SetEventParameter( eref, kEventParamResourceID, typeSInt32, sizeof( kMarksResID ), &kMarksResID );
err = SetEventParameter( eref, kEventParamResourceFile, typeFSRef, sizeof( doc_ref ), &doc_ref );
err = SetEventParameter( eref, kEventParamFileFork, typeType, sizeof ( res_fork ), &res_fork );
err = SendEventToEventTarget( eref, GetResourceManagerEventTarget() );

// Added resources are automatically committed on close.

Presuming that some data was to be stored in my application's writable resource file, I could omit the FSRef and fork parameters.

Frankly, this is not a sensible use of Carbon events. Events are meant to communicate that something has happened. They're not a long- term data storage mechanism.

If we wanted to do something like this, the right API would be one that let you attach your dictionary directly to the window: SetWindowPersistentInfo( window, dictionary ), or something like that. A Carbon event is not an appropriate solution.

-eric



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References: 
 >Re: Want to know about resources of Resource fork (From: Mike Kluev <email@hidden>)
 >Re: Want to know about resources of Resource fork (From: Philip Aker <email@hidden>)



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