[Pyobjc-dev] Interfacing with CF/Carbon API from PyObjC

[aesboe <ae...@gm...>]

Hello all,

I would like to access the Carbon MDQuery API from PyObjC. I cannot
use the Cocoa API because it has some limitations. I've searched on
this mailing list and googled for tips on glueing CF and PyObjc but I
can't seem to find anything. I've pasted a simple outline of my CF
based C code below. Is there anyway I could rewrite this in PyObjC? Or
wrap it in Python and access it from within PyObjC? Any
pointers/suggestions would be greatly appreciated - I am
stuck/frustrated with the Cocoa API :)

Thanks
isb

#include <CoreServices/CoreServices.h>

static void MyCallback(CFNotificationCenterRef center, void *observer,
CFStringRef name, const void *object, CFDictionaryRef userInfo) {
        // ...
}

int main (int argc, const char * argv[]) {
       MDQueryRef query;

       query = MDQueryCreate(kCFAllocatorDefault,
CFSTR("MDItemKeywords == '*Tiger*'"), NULL, NULL);
       CFNotificationCenterRef nc = CFNotificationCenterGetLocalCenter();

       // register callback for results
       CFNotificationCenterAddObserver(nc, NULL, &MyCallback,
kMDQueryDidUpdateNotification, query,
CFNotificationSuspensionBehaviorDeliverImmediately);

       MDQueryExecute(query, kMDQueryWantsUpdates);
       CFRunLoopRun();

       return 0;
}