Re: Setting default application for URL scheme

FROM : Ken Thomases
DATE : Wed May 14 23:16:55 2008

On May 14, 2008, at 3:06 PM, Nick Zitzmann wrote:
>
> On May 14, 2008, at 1:16 PM, Matthew Gertner wrote:
>

>> I'd like to set the application that should be run when a URL with a
>> given scheme is opened. The only way I've found to do this is
>> _LSSetDefaultSchemeHandlerURL, but I'd rather not go with an
>> undocumented API if it can be avoided. Is there a Cocoa API or
>> something for this that I haven't been able to find? Or would I be
>> better off using the Cocoa APIs to modify the launch services 
>> database
>> directly?

>
>
> There is no Cocoa API. The only supported way of doing this is to 
> use LSSetDefaultHandlerForURLScheme(), which requires Tiger or 
> later. Prior to Tiger, you had to use Internet Config to do that.


Do you really need to set the default handler?  Generally, Mac 
applications merely advertise that they are capable of handling a 
given URL scheme and it's left to the user to pick the default 
handler.  To merely advertise the capability, see the documentation 
of the CFBundleURLTypes key of the Info.plist file:

http://developer.apple.com/documentation/MacOSX/Conceptual/
BPRuntimeConfig/Articles/PListKeys.html#//apple_ref/doc/uid/
20001431-102207

http://developer.apple.com/documentation/Carbon/Conceptual/
LaunchServicesConcepts/LSCConcepts/chapter_2_section_4.html#//
apple_ref/doc/uid/TP30000999-CH202-CIHFEEAD

Cheers,
Ken