dosexterr

raw OCR

Gets extended DOS error information.

Defined in header <dos.h>

Syntax

#include <dos.h>
int dosexterr(struct DOSERROR   *eblkp);

Portability

DOS	UNIX	Windows	ANSI C	C++ only
■		■

Remarks

This function fills in the DOSERROR	structure pointed to by eblkp with

extended error information after a DOS call has failed. The structure is defined as follows:

struct DOSERROR {

int de_exterror;	/* extended error */
char de_class;	/* error class */
char de_action;	/* action */
char de_locus; }; The values in this structure are obtained by way of DOS call 0x59. A de_exterror value of 0 indicates that the prior DOS call did not result in an error.	/* error locus */

Return value

dosexterr returns the value de_exterror.

Example

#include <stdio.h>
#include <dos.h>

int main (void)
{
   FILE *fp;
struct DOSERROR  info;
fp = fopenC'perror.dat", "r");
if  (!fp) perror("Unable to open file  for reading"]
dosexterr(&info) ;
printf IExtended  DOS error information: \n"i
printf I   Extended  error:     %d\n" info.de_exterror)
printf I             Class:     %x\n" ,info.de_class);
printf I            Action:     %x\n"  info.de_action);
printf I       Error Locus:     %x\n" ,info.de locus);
return

Differences from modern implementations

Nothing recorded yet.

Modern references

Microsoft C runtime (search)

These are search links, not yet checked by hand.

Stable link: /3.1/dos.h/dosexterr/ · short form /3.1/dosexterr/