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Subject: Re: QLaunch 5.1 Crashes after exiting card app


Author:
Mark Tamura
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Date Posted: 00:30:21 04/29/04 Thu
In reply to: Russell Mulcahy 's message, "Re: QLaunch 5.1 Crashes after exiting card app" on 04:01:07 04/25/04 Sun

Hi. I'm the developer of Switch5 and I'll looked into this problem with QLaunch. The problem is that Switch5 receives the appQuitting notification and the dbID is invalid (Switch5 uses the dbID to get the creator of the app). Now Switch5 does not know that the dbID is invalid because (a) the deleted notification has not arrived yet and (b) there is no way to test to see if a dbID is valid.

Since I don't have access to the source code of QLaunch, here is what I'm seeing from the debugger. The app exits, the system deletes the app because the recyclable bit is set. I assume QLaunch is setting the recyclable bit...

So here is my take... the PalmOS Reference says the appQuitting notification contains the dbID of app. It is implied (in my opinion) that the dbID is valid (the reference does not say otherwise). I believe that QLauncher is doing the wrong thing by setting the recyclable bit because it breaks what the PalmOS Reference says about how the appQuitting notification works. Also, I don't believe the other launchers work in this same manner when launching apps from the external memory card.

Mark

>In case anyone else has this problem ...
>
>Scott's suggestion of using CrashPro showed the
>culprit to be Switch5. I have deleted this and all
>works fine now.
>
>Thanks, Scott.
>
>Russell.
>
>>
>>I am guessing it is really another app that is
>>crashing. This has been seen with PXA clocker and
>>codediver. PXA clocker developer said this would be
>>fixed in v3.2, don't know about codediver.
>>
>>Here is what you can use to see what is crashing:
>>

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