emx/g++ os2.h

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2 total messages Started by Kai Uwe Rommel Fri, 24 Jul 1992 17:25

#480

Author: Kai Uwe Rommel
Date: Fri, 24 Jul 1992 17:25

40 lines
1692 bytes

In the emx/g++ distribution, C++ wrappers for some C include headers
are missing, such as for os2.h. They can be constructed very easily,
such as the following include.cpp/os2.h for os2.h:

#ifndef _os2_h
#define _os2_h 1
extern "C" {
#include_next <os2.h>
}
#endif

That's all there is to do to call OS/2 API functions from C++ code.
Similar wrapper headers can be created for process.h and other emx/gcc
headers for which the C++ wrapper is missing.

Note: the above sample works also with the IBM OS/2 toolkit headers,
if the icc2gcc contribution by Johannes Martin is used (strongly
recommended). But there is a bug in the bsedos.h, in the prototype for
DosSetPriority at line 164. It uses the reserved C++ keyword "class"
as a parameter template.

Change

   APIRET APIENTRY  DosSetPriority(ULONG scope, ULONG class, LONG delta, ULONG PorTid);

to

   APIRET APIENTRY  DosSetPriority(ULONG scope, ULONG _class, LONG delta, ULONG PorTid);

or similar.

Kai Uwe Rommel

--
/* Kai Uwe Rommel                                      Muenchen, Germany *
 * rommel@jonas.bofe.sub.org                       Phone +49 89 723 4101 *
 * rommel@informatik.tu-muenchen.de                  Fax +49 89 723 7889 */

DOS ... is still a real mode only non-reentrant interrupt
handler, and always will be.                -Russell Williams

emx/g++ os2.h

#512

Author: Andreas Kaiser
Date: Mon, 27 Jul 1992 03:40

19 lines
1221 bytes

In article <711998759snx@jonas.bofe.sub.org> rommel@jonas.bofe.sub.org writes:

  > if the icc2gcc contribution by Johannes Martin is used (strongly
  > recommended). But there is a bug in the bsedos.h, in the prototype for
  > DosSetPriority at line 164. It uses the reserved C++ keyword "class"
  > as a parameter template.

There is another bug in BSEDOS.H. The definitions of the bit-field
structs FDATE and FTIME are done using UINT. IBM C doesn't care and
makes it 16-bit anyway. GCC is more "clever" and makes it 32-bit since
it is UINT, not USHORT. So all structs containing FDATE and FTIME have
wrong offsets.

To fix it, simple change UINT to USHORT in FDATE and FTIME.

:::::::::::::::::::: subnet:  ak@ananke.stgt.sub.org
:: Andreas Kaiser :: fidonet: 2:241/7220.9
::::::::::::::::::::

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