XtErrorHandler()XtErrorHandler()NameXtErrorHandler - interface definition for low-level error and warning
handler procedures.
Synopsis
typedef void (*XtErrorHandler)(String);
String message;
Inputs
message Specifies the error message.
Description
An XtErrorHandler is registered as an error or warning handler with
XtAppSetErrorHandler() or XtAppSetWarningHandler(). It is invoked by
XtAppError() or XtAppError(). The error handler should display the
specified string in some appropriate fashion. Some applications may
wish to log errors to a file as well. Error handlers should exit;
warning handlers should return.
See XtErrorMsgHandler(2) for a description of the high-level error and
warning handler procedure.
Example
The Intrinsics default error and warning handlers are shown below. The
XTERROR_PREFIX and XTWARNING_PREFIX symbols are by default the empty
string in the MIT implementation, but may be configured when the
Intrinsics are compiled.
void _XtDefaultError(message)
String message;
{
extern void exit();
(void)fprintf(stderr, "%sError: %s0, XTERROR_PREFIX, message);
exit(1);
}
void _XtDefaultWarning(message)
String message;
{
if (message && *message)
(void)fprintf(stderr, "%sWarning: %s0, XTWARNING_PREFIX, message);
return;
}
See AlsoXtAppError(1), XtAppSetErrorHandler(1), XtAppSetWarningHandler(1),
XtAppWarning(1),
XtErrorMsgHandler(1).
Xt - Error Handling XtErrorHandler()
