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ReqErr(3I)


NAME

   ReqErr - handle request errors

SYNOPSIS

   #include <InterViews/reqerr.h>

DESCRIPTION

   Some requests to the window server may generate an error.  For example,
   if a window is destroyed while it is being repositioned  interactively,
   the  request  to  place  the  window  in  the  new  position will fail.
   Normally, errors cause a process to terminate.   The  ReqErr  class  is
   used  to  handle  errors within an application.  The base class defines
   the attributes associated with each error, including a  message  string
   describing  the  error, an integer request code that specifies the kind
   of call that generated the error, and a id object that was  the  target
   of  the  request.   When an error occurs, the attributes of the current
   request handler are assigned  and  the  handler's  Error  operation  is
   called.

PUBLIC OPERATIONS

   ReqErr* Install()
          Use  this  error  handler  for  subsequent errors and return the
          previous error handler.

   virtual void Error()
          Handle a detected error.  The default handler is a nop.

SEE ALSO

   Interactor(3I)



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