c++.dos.32-bits - dos.h _dos_findfirst example
- Victor P. Dura (45/45) Nov 14 2001 Hello,
- Jan Knepper (8/53) Nov 14 2001 You will have to compile with
- Vic Dura (40/98) Nov 15 2001 Jan,
- Jan Knepper (42/54) Nov 15 2001 FindFirstFile and FileNextFile:
- Vic Dura (7/8) Nov 15 2001 I think it will help a great deal. I'll study it closely and try to
Hello,
I'm evaluating the DM C compiler for use in porting old MS DOS C v6.0
code. When I try to compile/ling the example code from the dos.h
_dos_findfirst example I get:
d:\c60\test>sc ffirst.c
link ffirst,,,user32+kernel32/noi;
OPTLINK (R) for Win32 Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001 All Rights Reserved
ffirst.obj(ffirst)
Error 42: Symbol Undefined __dos_findfirst
ffirst.obj(ffirst)
Error 42: Symbol Undefined __dos_findnext
--- errorlevel 2
Does anyone have any suggestions as to what I might be doing wrong?
Thanks for any help. Here's the example code:
/* Example for _dos_findfirst and _dos_findnext */
#include <dos.h>
#include <stdio.h>
#include <stdlib.h>
void list_name( struct find_t fileinfo)
{
int result;
result = _dos_findnext (& fileinfo);
if (result == 0)
{
printf ("% s\n", fileinfo. name);
list_name (fileinfo);
}
else
printf ("List done\n");
}
void main()
{
int result;
struct find_t ffblk;
result = _dos_findfirst ("*.dat", _A_NORMAL,
&ffblk);
if (result == 0)
{
printf ("% s\n", ffblk. name);
list_name (ffblk);
}
else
printf ("No files match *.dat\n");
}
Nov 14 2001
Jan Knepper <jan smartsoft.cc>
You will have to compile with
sc -ml ffirst.c
Or other compiler flags that generate a DOS executable.
sc now by default generates a Win32 executable. Win32 does not have
_dos_findfirst or _dos_findnext.
HTH
Jan
"Victor P. Dura" wrote:
Hello,
I'm evaluating the DM C compiler for use in porting old MS DOS C v6.0
code. When I try to compile/ling the example code from the dos.h
_dos_findfirst example I get:
d:\c60\test>sc ffirst.c
link ffirst,,,user32+kernel32/noi;
OPTLINK (R) for Win32 Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001 All Rights Reserved
ffirst.obj(ffirst)
Error 42: Symbol Undefined __dos_findfirst
ffirst.obj(ffirst)
Error 42: Symbol Undefined __dos_findnext
--- errorlevel 2
Does anyone have any suggestions as to what I might be doing wrong?
Thanks for any help. Here's the example code:
/* Example for _dos_findfirst and _dos_findnext */
#include <dos.h>
#include <stdio.h>
#include <stdlib.h>
void list_name( struct find_t fileinfo)
{
int result;
result = _dos_findnext (& fileinfo);
if (result == 0)
{
printf ("% s\n", fileinfo. name);
list_name (fileinfo);
}
else
printf ("List done\n");
}
void main()
{
int result;
struct find_t ffblk;
result = _dos_findfirst ("*.dat", _A_NORMAL,
&ffblk);
if (result == 0)
{
printf ("% s\n", ffblk. name);
list_name (ffblk);
}
else
printf ("No files match *.dat\n");
}
Nov 14 2001
On Thu, 15 Nov 2001 03:26:48 -0500, Jan Knepper <jan smartsoft.cc> wrote:Yep! You're missing SDL.LIB... That's why you get the errors. Which .LIB files do you have???Jan, Here are the libs that came with the Digital Mars C/C++ Compiler Version 8.23 (2,765,000 bytes) package: ADVAPI32.LIB 53760 8/08/96 19:30 COMCTL32.LIB 9728 6/24/01 16:41 COMDLG32.LIB 3072 8/08/96 19:30 CTL3D32.LIB 2560 12/04/95 8:07 gc.lib 11776 6/19/01 15:10 GDI32.LIB 35328 8/08/96 19:30 KERNEL32.LIB 79872 8/08/96 19:30 OLE32.LIB 32256 8/08/96 19:30 OLEAUT32.LIB 24064 8/14/96 5:24 snn.lib 527872 10/24/01 9:37 USER32.LIB 60416 8/08/96 19:30 UUID.LIB 170496 8/14/96 5:24I will attach my SDL.LIB, but really the best thing to do is post these messages in the newsgroup so Walter can read and reply to them as well.Ooops! I thought I was posting to the NG. My "post reply to NG" and "post reply via email" buttons are next to each other. I've been meaning to move them further apart. Anyway, thank you. That solved the "Warning 2: File Not Found SDL.lib" error. Does it look like I now have all the LIBs? Also, do you happen to know which RTL functions replace _dos_findfirst or _dos_findnext in win32 programs? That's what I'm trying to do, convert a small MS DOS v6.0 C program to a win32 console application. For some reason, I'm having a difficult time finding function descriptions in the RTL docs. That leads me to another question. The documentation at the DM site says under "Building Console Applications" that to compile console applications, use the -mn compiler option, and specify the SUBSYSTEM CONSOLE directive in the .def file. I've read the section about .def files, in the Compiler Tool Guide, but didn't see a directive SUBSYSTEM CONSOLE, and didn't see any information about where a .def file should be located, how it is named, and how to tell the linker about it. Could you point me in the right directions? Thanks again for your help and the SDL.lib. Regards, Vic DuraVic Dura wrote:On Wed, 14 Nov 2001 13:06:38 -0500, in c++.dos.32-bits you wrote:You will have to compile with sc -ml ffirst.c Or other compiler flags that generate a DOS executable. sc now by default generates a Win32 executable. Win32 does not have _dos_findfirst or _dos_findnext.Thank you Jan for your suggestion. I tried "sc -ml -v2 ffirst.c" but it didn't help. I got the following: ========== begin command output =========== scppn -ml -v2 ffirst.c Digital Mars C/C++ Compiler Version 8.22n Copyright (C) Digital Mars 2000-2001. All Rights Reserved. Written by Walter Bright www.digitalmars.com 'ffirst.c' 'E:\DM\BIN\..\include\dos.h' 'E:\DM\BIN\..\include\stdio.h' 'E:\DM\BIN\..\include\stdlib.h' 'E:\DM\BIN\..\include\heapstat.h' list_name main C/C++ Compiler complete. Code: 0x00a1 (161) Data: 0x002c (44) Time: 0.13 seconds link ffirst/noi; OPTLINK (R) for Win32 Release 7.50B1 Copyright (C) Digital Mars 1989 - 2001 All Rights Reserved SDL.lib Warning 2: File Not Found SDL.lib OPTLINK : Warning 23: No Stack ffirst.obj(ffirst) Error 42: Symbol Undefined __acrtused ffirst.obj(ffirst) Error 42: Symbol Undefined _printf ffirst.obj(ffirst) Error 42: Symbol Undefined __dos_findfirst ffirst.obj(ffirst) Error 42: Symbol Undefined __dos_findnext OPTLINK : Warning 134: No Start Address --- errorlevel 4 ============= end command output =========== It looks like I'm also missing something called SDL.lib? Do you happend to know if that should have been part of the DM822C.ZIP package available from www.digitalmars.com ?
Nov 15 2001
Also, do you happen to know which RTL functions replace _dos_findfirst or _dos_findnext in win32 programs? That's what I'm trying to do, convert a small MS DOS v6.0 C program to a win32 console application.FindFirstFile and FileNextFile: HANDLE handle; WIN32_FIND_DATA *win32_find_data = new WIN32_FIND_DATA; BOOL result; int pathsize = strlen ( path ); // Process the file's in this directory following the 'wildcard'. handle = FindFirst ( win32_find_data ); if ( handle != INVALID_HANDLE_VALUE ) { do { if ( Canceled () ) break; // Do something result = FindNext ( handle, win32_find_data ); } while ( result ); FindClose ( handle ); }The documentation at the DM site says under "Building Console Applications" that to compile console applications, use the -mn compiler option, and specify the SUBSYSTEM CONSOLE directive in the .def file.TEST.DEF: NAME 'TEST' WINDOWAP DESCRIPTION 'TEST' EXETYPE NT SUBSYSTEM CONSOLE STUB 'WINSTUB.EXE' CODE EXECUTE READ DATA READ WRITE STACKSIZE 1048576,4096 HEAPSIZE 1048576,4096 TEST.LNK: TEST.OBJ+ One.OBJ+ Two.OBJ+ Three.OBJ TEST.EXE NUL KERNEL32.LIB GDI32.LIB USER32.LIB TEST.DEF; Link: link test.lnkI've read the section about .def files, in the Compiler Tool Guide, but didn't see a directive SUBSYSTEM CONSOLE, and didn't see any information about where a .def file should be located, how it is named, and how to tell the linker about it. Could you point me in the right directions?Hope the stuff above helps. Jan
Nov 15 2001
On Thu, 15 Nov 2001 17:26:08 -0500, Jan Knepper <jan smartsoft.cc> wrote:Hope the stuff above helps.I think it will help a great deal. I'll study it closely and try to learn from it. Thanks for your help. Regards, Vic Dura
Nov 15 2001