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From: johnsone@uxh.cso.uiuc.edu (Erik A. Johnson)
Newsgroups: comp.sys.mac.programmer
Subject: Help in THINK C4.0-got extra 4bytes going to subroutine?
Keywords: think-c c
Message-ID: <1991Jan28.082031.13924@ux1.cso.uiuc.edu>
Date: 28 Jan 91 08:20:31 GMT
Sender: news@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 48


I have an extra 4 bytes being sent to a subroutine in THINK C (4.0)!
(see code portion, below)  For some reason, when the program gets into the
MyGetEvent subroutine, it only works if I put a dummy long (4-byte) variable
at the beginning, otherwise the other variables (event mask, event pointer,
and mouse RgnHandle) are incorrect, off by the 4-byte offset.

Any ideas?  (Oh, I'm using an SE/30 8meg, various INITs, etc.)

Thanks in advance.  E-mail responses.  Thanks.


Erik A. Johnson, Graduate Student        \ Internet:  johnsone@uxh.cso.uiuc.edu
Aeronautical & Astronautical Engineering  \
University of Illinois at Urbana-Champaign \ AmericaOnline: ErikAJ


+-----------------------------------------------------------------------
|EventRecord  gTheEvent;
|RgnHandle    theMouseRgnH;
|Boolean      is_WaitNextEvent_Implemented;
|
|main()
|  {  .    
|     .
|     .
|    theMouseRgnH = NewRgn();
|    MyGetEvent( (int)everyEvent, &_gTheEvent, _theMouseRgnH );
|     .
|     .
|     .
|   }
|
|/**************** My Get Event ******************/
|MyGetEvent( dummy, theEventMask, theEventP, mouseRgnH )
|long         dummy;                
|int          theEventMask;
|EventRecord  *theEventP;
|RgnHandle    mouseRgnH;
|  {
|    if (is_WaitNextEvent_Implemented)
|        WaitNextEvent( theEventMask, theEventP, 0L, mouseRgnH );
|    else
|      { SystemTask();
|        GetNextEvent( theEventMask, theEventP );
|       }
|   }
+-----------------------------------------------------------------------