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Old 06-14-2003, 10:57 AM   #1
Mouton
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Posts: 1,956
Default shared memory not working ?

on ioftpd 4.9.4r
to use shared memory, in the initialisation, i do:

Code:
hShell32	= LoadLibrary("shell32.dll");
if ( Target && hShell32 )
{
  Allocate	= GetProcAddress(hShell32, "SHAllocShared");
  Free	= GetProcAddress(hShell32, "SHFreeShared");
  Unlock	= GetProcAddress(hShell32, "SHUnlockShared");
  Lock	= GetProcAddress(hShell32, "SHLockShared");

  if ( Allocate && Free && Lock && Unlock && hTarget )
  { ... }
  else {
  LPVOID lpMsgBuf;
    FormatMessage( 
    FORMAT_MESSAGE_ALLOCATE_BUFFER | 
    FORMAT_MESSAGE_FROM_SYSTEM | 
    FORMAT_MESSAGE_IGNORE_INSERTS,
    NULL,
    GetLastError(),
    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
    (LPTSTR) &lpMsgBuf,
    0,
    NULL );
  printf("Error on Allocate. Error: %lX - %s\n",GetLastError(),lpMsgBuf); fflush(stdout);
  }
}
this works ok on some pc, but on others:

Error on Allocate. Error: 7F - Kan opgegeven procedure niet vinden.

(means "Can't find the procedure that you filled in.")

Wasn't shared memory supposed to work on all WinNT kernel based OS now ..?
I get this on Win2k and some else reported this happening on WinXP SP1 too :\
While on another SP1, it works ok...
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Old 06-14-2003, 04:24 PM   #2
FTPServerTools
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Join Date: Sep 2002
Posts: 543
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Use call by ordinal for win2k.
Shared memory works for all but it isnt defined that way for all shell32.dll versions.
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Old 06-16-2003, 07:26 PM   #3
Mouton
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Thx.

Off the record, for those who that might interest:

Code:
//Allocate  = GetProcAddress(hShell32, "SHAllocShared");
Allocate  = GetProcAddress(hShell32, (char *)520);
//Free    = GetProcAddress(hShell32, "SHFreeShared");
Free    = GetProcAddress(hShell32, (char *)523);
//Unlock    = GetProcAddress(hShell32, "SHUnlockShared");
Unlock    = GetProcAddress(hShell32, (char *)522);
//Lock    = GetProcAddress(hShell32, "SHLockShared");
Lock    = GetProcAddress(hShell32, (char *)521);
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Old 06-17-2003, 07:20 AM   #4
phoenixfr
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Posts: 149
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thanks Mouton , im thinking about plmaying a bit with it on win2k
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allocate, error, getprocaddresshshell32, memory, shared

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