ReqErr(3I) InterViews Reference Manual 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 interac-
tively, 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)
InterViews 15 June 1987 ReqErr(3I)
