Re: Agent Applications and launchd
Re: Agent Applications and launchd
- Subject: Re: Agent Applications and launchd
- From: John Stiles <email@hidden>
- Date: Thu, 5 Jan 2006 10:42:44 -0800
On Jan 5, 2006, at 8:54 AM, Jerry Krinock wrote:
After I replaced my 50 lines of code with calls to the functions in
Apple's
LoginItemsAE.c and re-tested my app, I discovered another reason
why using
LoginItemsAE.c is a good idea: AliasData.
Apple's code adds the AliasData key/value pair to your login item.
My own
code did not do that.
I could not find any documentation on AliasData; I presume that it
is needed
for your login item to launch if the user moves it, and is probably
some
kind of serialized FSRef, which I would have had to reverse-
engineer had I
continued developing with my own code.
Aliases themselves are not FSRefs. They're an opaque structure which
is used to point to a file, even if the file moves or gets renamed.
http://developer.apple.com/documentation/Carbon/Reference/
Alias_Manager/Reference/reference.html
Sadly, Cocoa has not received much support for aliases. I am honestly
kind of surprised by this, since they are really useful and tend to
make a lot of stuff more user-friendly. (For example, notice how
"Open Recent" in the File menu of most Cocoa apps can find your
documents even if you've moved them.) The good news is that there are
a lot of open-source classes which wrap the Alias Manager; I've used
NDAlias and it worked great for me.
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