Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!microsoft!alistair
From: alistair@microsoft.UUCP (Alistair BANKS)
Newsgroups: comp.os.os2
Subject: Re: OS2 Debugger
Keywords: OS2 debugging
Message-ID: <10183@microsoft.UUCP>
Date: 8 Jan 90 20:32:58 GMT
References: <8400@pixar.UUCP>
Reply-To: alistair@microsoft.UUCP (Alistair BANKS)
Organization: Microsoft Corp., Redmond WA
Lines: 23

In article <8400@pixar.UUCP> freed@pixar.UUCP (freed) writes:
>Does anyone know the details of why debuggers cannot get access to Presentation
>manager programs except in a full screen group. (They cannot run under a window
>in the same screen group as the program they are debugging) I hear that it is 
>something about the message queueing. Any better info.? Is this going to 
>be fixed in 2.0? (Another rumor)
>
>-Erik Freed
>ucbvax!pixar!freed


In OS/2 1.1 it was not possible for a debugger to 'unhook' a message     
queue from a debugee, thus, if one PM app ran another under the ptrace  
interface, when the debuggee 'broke' he would need to lose focus so that 
the debugger could gain focus - however, he was already broken at this   
point so the debuggee does not respond, so the debugger cannot gain      
focus, and so nothing happens.                                           
                                                                         
This is being fixed for 2.0.                                             
                                                                         
Alistair Banks                                                           
OS/2 Group                                                               
Microsoft