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Re: Can anyone tell me why this AppleEvent code isn't working?
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Re: Can anyone tell me why this AppleEvent code isn't working?


  • Subject: Re: Can anyone tell me why this AppleEvent code isn't working?
  • From: Varun Mehta <email@hidden>
  • Date: Sat, 27 Jul 2002 11:33:07 -0400

On 7/27/02 10:30 AM, "Tomas Zahradnicky" <email@hidden> wrote:

>> If thought that this code would work to tell iTunes to play or pause, but it
>> doesn't seem to be executing the event, but gives no error on compile and no
>> problems show up in console. This code is an adaptation from the code that
>> ClassicSpy uses to send a Quit Event to Classic. I have adapted the daemon
>> for it so that it has no problems sending a standard Quit Event to iTunes.
>>
>> AEAddressDesc clasSprt;
>> AppleEvent anAppleEvent, reply;
>>
>> if (classicRunning) {
>> if (AECreateDesc(typeNull, NULL, sizeof(reply), &reply) == noErr) {
>> if (AECreateDesc('hook', &iTunesPSN, sizeof(ProcessSerialNumber),
>> &clasSprt) == noErr) {
>> if (AECreateAppleEvent('hook', 'PIPs', &clasSprt,
>> kAutoGenerateReturnID, kAnyTransactionID, &anAppleEvent) == noErr) {
>> // Send the Apple Event.
>> if(AESend(&anAppleEvent, &reply, kAENoReply, kAENormalPriority,
>> kAEDefaultTimeout, nil, nil) != noErr)
>> NSLog(@"iTunes: AESend error");
>> AEDisposeDesc(&anAppleEvent); // Dispose of the Apple Event.
>> } //else NSLog(@"AECreateAppleEvent error %d", err);
>> AEDisposeDesc(&clasSprt);
>> } //else NSLog(@"AECreateDesc 2 error %d", err);
>> AEDisposeDesc(&reply);
>> } //else NSLog(@"AECreateDesc 1 error %d", err);
>> }
>>
>> I'm sure the problem is simple, but no examples or reference is telling me
>> anything as to why this isn't working. Any AppleEvent masters out there to
>> help me out?
>
> Hello,
>
> I see is two problems here. First is that you don't need to allocate
> a descriptor for reply event. It will be allocated by AESend if you
> specify that you _ARE_ interested in the reply and you're not
> kAENoReply. So the first AECreateDesc is not neccessary. Just use
> AEInitializeDesc(&reply) instead. Second thing is that you wrongly
> specify the event's target. You should create a AEDesc &clasSprt with
> typeProcessSerialNumber and hot type 'hook'. I bet AESend returns
> procNotFound (-600) error.
>
> -Tomas


It does not give me this error. Error checking is reporting that the
AppleEvent was sent successfully.
I have tried your suggestions and still I get no error but also no result, I
know for a fact that the EventID is 'PIPs', which I translated into Hex but
I still get no result.
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References: 
 >Re: Can anyone tell me why this AppleEvent code isn't working? (From: Tomas Zahradnicky <email@hidden>)

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