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From: dorner@pequod.cso.uiuc.edu (Steve Dorner)
Newsgroups: comp.sys.mac.comm,comp.sys.mac.programmer
Subject: Re: Comm Toolbox Confusion.
Message-ID: <1991Apr1.142542.19431@ux1.cso.uiuc.edu>
Date: 1 Apr 91 14:25:42 GMT
References: <1062@argosy.UUCP>
Sender: usenet@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at U-C
Lines: 43

In article <1062@argosy.UUCP> jay@armada.UUCP () writes:
>To create a Connection Record, I need to call CMNew(), right?  Well, to
>call CMNew, I need to know the procID of a tool - no problem, I'll just
>call CMChoose to let the user choose a tool, and then I'll have a
>procID.  BUT CMCHOOSE NEEDS A VALID CONNECTION RECORD!!!
>What am I missing here?

CMGetProcID.  Perhaps this fragment will be of some use:

  CMBufferSizes bs;
  ConnectionHandle CnH;
  short CTBErr;
  
  /*
   * find the tool to use
   */
  if (!*GetRStr(toolName,CTB_TOOL_STR)) return(CTBErr = 1);
  
  if ((procID=CMGetProcID(toolName))<0)
  {
    CRMGetIndToolName(classCM,1,toolName);
    if (!*toolName)
      return(WarnUser(NO_CTB_TOOLS,CTBErr=1));
    else if ((procID=CMGetProcID(toolName))<0)
      return(WarnUser(COULDNT_GET_TOOL,CTBErr=1));
  }
  
  /*
   * create a connection record
   */
  WriteZero(bs,sizeof(bs));
  if (!(CnH = CMNew(procID,cmNoMenus|cmQuiet,bs,nil,nil)))
    return(WarnUser(MEM_ERR,CTBErr=MemError()));
    
You'll have to infer what some of my library routines do.  The basic idea is
that I grab the name of the tool that was last in use (CTB_TOOL_STR), and
try to get its procID (CMGetProcID(toolName)).  If that fails, then
I ask for 'any old connection tool' (CRMGetIndToolName(classCM,1,toolName))
and try again.  Once I have a valid procID, then I can call CMNew, and later
CMValidate or CMChoose.
--
Steve Dorner, U of Illinois Computing Services Office
Internet: s-dorner@uiuc.edu  UUCP: uunet!uiucuxc!uiuc.edu!s-dorner