DXmHelpSystemDisplay man page on Ultrix

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DXmHelpSystemDisplay(3X)			      DXmHelpSystemDisplay(3X)

       DXmHelpSystemDisplay  -	Displays a topic or directory of the help file
       in Bookreader.

       void DXmHelpSystemDisplay(help_context, help_file, keyword, name,  rou‐
       tine, tag)
	     Opaque  help_context;
	     char    *help_file;
	     char    *keyword;
	     char    *name;
	     void    ((*routine )()),
	     Opaque  tag );

       Used by the DECwindows Motif Help System to pass required LinkWorks and
       help information from one routine to another.  Optional.	 The file name
       of  the	help  file. If Null or "" is supplied, Bookreader will use the
       help file name passed in to the DXmHelpSystemOpen routine; otherwise  a
       new  file  name	can  be	 passed.  One of two values: "topic" or "dir".
       Pointers to these strings can be passed instead.	 The topic symbol from
       the  help  callback  if	"topic"	 is used for the keyword.  If "dir" is
       used, then name refers to the name of  the  Bookreader  directory  that
       should  be  opened,  such  as  "Contents"  or "Index".  Either specific
       strings or pointers to strings may be passed in.	 Used for  error  pro‐
       cessing.	  If  an  error occurs within the DECwindows Motif Help System
       and it cannot be processed  by  either  LinkWorks  or  Bookreader,  the
       DECwindows  Motif  Help	System	calls the error processing routine you
       have included in your application and passes in an integer, or  status,
       to indicate the status of the error processing operation, as follows:


	      Value   Description


	      1	      The  DECwindows Motif Help
		      System could not find  the
		      LinkWorks shareable image.

	      2	      The  DECwindows Motif Help
		      System could not translate
		      a	 specified  value into a
		      valid file specification.


	      Note the following: The status parameter	is  a  system-supplied
	      parameter	 that  supplements  the routine and tag parameters you
	      have already specified in the application.  If an	 error	cannot
	      be  processed by either LinkWorks or Bookreader and you have not
	      specified a supplementary error handling	routine,  your	system
	      will  generate an access violation error message.	 The parameter
	      you supply to the previously described routine parameter.	 Asso‐
	      ciating a tag with the routine enables you to more easily deter‐
	      mine where errors occur.


       This routine is not supported on all operating systems.

       The DXmHelpSystemDisplay routine (which you use instead of  a  call  to
       the  help  widget)  displays  a	topic or directory of the help file in
       Bookreader, using the DECwindows Motif Help System.  This  routine  can
       also  be	 used to display topics or directories of books other than the
       ones passed in to DXmHelpSystemOpen.

       DXmHelpSystemDisplay(3X), DXmHelpSystemOpen(3X)


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