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From: mxmora@unix.SRI.COM (Matt Mora)
Newsgroups: comp.sys.mac
Subject: Re: Help! Anyone know how to force the mouse to a location?
Message-ID: <12808@unix.SRI.COM>
Date: 5 Jun 90 15:51:17 GMT
References: <1990Jun5.091419.14219@portia.Stanford.EDU> <16995@phoenix.Princeton.EDU>
Reply-To: mxmora@unix.UUCP (Matt Mora)
Organization: SRI International, Menlo Park, CA
Lines: 59

In article <16995@phoenix.Princeton.EDU> bskendig@phoenix.Princeton.EDU (Brian Kendig) writes:
>In article <1990Jun5.091419.14219@portia.Stanford.EDU> canuck@portia.Stanford.EDU (William Stocker) writes:
>>I'm writing a Mac program in THINK Pascal 3.0, and need to force the
>>mouse to a particular screen location.  I'm sure it's against Apple's
>>guidelines (there's no SetMouse command I can find in Inside Mac I-V),
>>but there's a good purpose for it -- trust me!
>
>    DON'T DO IT.  It's *very* bad technique, and your application
>    won't run, besides.

[good explanation of why not to deleted]

>-- 
>| Brian S. Kendig      \ Macintosh |   Engineering,   | bskendig             |


From page 84 of the UMPG.

From: cbm@well.UUCP (.i.Chris Muir;)
Subject: Re:.c. Modifying the mouse input (SetMouse codein pascal)
Summary: Here's the compliment to GetMouse.

Here's the other side of GetMouse, SetMouse:

 procedure SetMouse (where: point);
  var
   LowGlob: integer;
   LowMem: ptr;
   PointPtr: ^point;
   finalTicks: longint;
  const
    {some dangerous low-memory-global equates}
   MBState = $172;      {byte}
   MTemp = $828;        {point}
   RawMouse = $82c;     {point}
   Mouse = $830;        {point}
   CrsrNew  ready to restore old mouse position}
  LowMem := pointer(RawMouse);      {point to low memory}
  PointPtr := @LowMem^;             {treat it as a point}
  PointPtr^ := where;               {store saved mouse position into it}
  LowMem := pointer(MTemp);         {point to low memory}
  PointPtr := @LowMem^;             {treat it as a point}
  PointPtr^ := where;               {store saved mouse position into it}
  LowMem := pointer(CrsrNew);
  LowMem^ := $ffff;                 {both CrsrNew & CrsrCouple}
  Delay(5, finalTicks);             {let the cursor catch up}
 end;       {SetMouse}


Note that it uses undocumented low memory globals.




-- 
___________________________________________________________
Matthew Mora
SRI International                       mxmora@unix.sri.com
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