table of contents
|ReqErr(3I)||InterViews Reference Manual||ReqErr(3I)|
ReqErr - handle request errors
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.
- 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.
|15 June 1987||InterViews|