Re: Image Capture in 10.5

FROM : Dominik Pich
DATE : Tue Jan 15 20:24:18 2008

the api did change and the myPhoto sample code is also broken.

I had to ignore a parameter passed in, as it was unreliable - even 
though doc'd to work / in the sample code.

#pragma mark DP: Ignore code as it differs in 10.x
//        switch (pbPtr->eventType)

Maybe this is loosly related and you can work around this by ignoring 
some parameter

Regards,
Dominik
Am Jan 15, 2008 um 2:36 PM schrieb Nick Forge:

>
> On 15/01/2008, at 8:38 PM, Annard Brouwer wrote:
>

>> Hi Nick,
>>
>> Thank you for getting back to me. Are you sure that check makes a 
>> difference? Because in that same method there is a statement 
>> "mSessionID = 0", so it would have been executed no matter what the 
>> value was. Over here, no matter what I do, it doesn't make a 
>> difference. Whether I close the session or not after each scan, I 
>> can only scan once and then I have to disconnect the USB cable.
>> I don't see any effort from Apple's side to look at this so we're 
>> looking at a solution that doesn't depend on ImageCapture at the 
>> moment.
>>
>> Good luck with your project!
>> Annard
>>

>
> I was having exactly the same problem as you - I had to disconnect 
> the cable after using it. The ONLY time that I set mSessionID is in 
> this block of code:
>
>     pb.object = scannerObject;
>     err = ICAScannerOpenSession(&pb, NULL);
>     if (err == noErr) {
>         mSessionID = pb.sessionID;
>     }
>
> I don't have any code that initialises mSessionID or anything like 
> that. Something has obviously changed in the API, since even using 
> Apple's SampleScannerApp, the "have to disconnect" problem occurs. 
> Mine now works fine, but I've done a bit of "reverse engineering" (I 
> haven't followed the documentation word-for-word) to get it working. 
> The existing documentation is severely lacking. It's strange, since 
> there are mixed messages coming out of Cupertino. Many of the ICA 
> functional calls were deprecated in 10.5, and a few were added. 
> Clearly someone there is working on it, but the documentation is 
> lacking, and the interface is ridiculous by 2008 standards. Why they 
> don't re-do the interface in Cocoa is beyond me.
>
> Good luck with your coding,
> Nick Forge
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