hpux man page for xtappsetwaa

XtAppSetWarningHandler()												  XtAppSetWarningHandler()

Name
  XtAppSetWarningHandler - set the low-level warning handler.

Synopsis
  XtErrorHandler XtAppSetWarningHandler(app_context, handler)
	 XtAppContext app_context;
	 XtErrorHandler handler;

Inputs
  app_context
	    Specifies the application context.

  handler   Specifies the new nonfatal error procedure.

Returns
  A pointer to the previously installed low-level error handler.

Description
  XtAppSetWarningHandler()  registers  the  procedure  handler in app_context as the procedure to be invoked by XtAppWarning().  It returns a
  pointer to the previously installed low-level warning handler.

  The default low-level warning handler provided by the Intrinsics is _XtDefaultWarning().  On POSIX-based systems, it prints the message  to
  standard error and returns to the caller.

Usage
  Note	that application-context-specific error and warning handling is not implemented on many systems.  Most implementations will have just
  one set of error handlers.  If they are set for different application contexts, the one performed last will prevail.

See Also
  XtAppError(1), XtAppErrorMsg(1), XtAppSetErrorHandler(1), XtAppSetErrorMsgHandler(1), XtAppSetWarningMsgHandler(1), XtAppWarning(1), XtApp-
  WarningMsg(1),
  XtErrorHandler(2).

Xt - Error Handling													  XtAppSetWarningHandler()