https://invisible-island.net/xterm/xtoolkit/
XtErrorMsg, XtSetErrorMsgHandler, XtWarningMsg, XtSetWarningMsgHandler
- high-level error handlers
#include <X11/Intrinsic.h>
void XtErrorMsg(const char *name, const char *type, const char *class,
const char *defaultMsg, String *params, Cardinal *num_params);
void XtSetErrorMsgHandler(XtErrorMsgHandler msg_handler);
void XtSetWarningMsgHandler(XtErrorMsgHandler msg_handler);
void XtWarningMsg(const char *name, const char *type, const char
*class, const char *defaultMsg, String *params, Cardinal
*num_params);
class Specifies the resource class of the error message.
default Specifies the default message to use.
name Specifies the general kind of error.
type Specifies the detailed name of the error.
msg_handler
Specifies the new fatal error procedure, which should not
return or the nonfatal error procedure, which usually
returns.
num_params
Specifies the number of values in the parameter list.
params Specifies a pointer to a list of values to be stored in the
message.
The XtErrorMsg function has been superceded by XtAppErrorMsg.
The XtSetErrorMsgHandler function has been superceded by XtAppSetEr-
rorMsgHandler.
The XtSetWarningMsgHandler function has been superceded by XtAppSet-
WarningMsgHandler.
The XtWarningMsg function has been superceded by XtAppWarningMsg
XtAppErrorMsg(3)
X Toolkit Intrinsics – C Language Interface
Xlib - C Language X Interface
X Version 11 libXt 1.1.5.2 XtErrorMsg(3)