When i use this procedure to call DOS command. Nothing happen!
Please can anybode help me? Where i made the mistake?

thanks in advance,
Tomas Volsicky

  BOOL bOk;
  STARTUPINFO si;
  PROCESS_INFORMATION pi;
  sprintf (szCmd,"command.com copy aaaa.txt bbbb.txt");

   memset(&si,0,sizeof(STARTUPINFO));
  si.cb = sizeof(STARTUPINFO);
  si.wShowWindow = SW_SHOW;
  bOk = CreateProcess(NULL,szCmd,NULL,NULL,FALSE,0,NULL,NULL,&si,&pi);

The first thing you need to do is add a /c parameter to your command line
as follows:

"command.com /c copy aaaa.txt bbbb.txt"

Once this is done and CreateProcess() still fails, then call
GetLastError() after CreateProces() to get extended error information.  
This should give you a clue about the cause of the failure.

--
*------------------------------------------------------------
| J. Keith Wedinger
| Technical Specialist - The Limited, Inc.

| http://www.serve.com/uccats
|

Tomas!

Try to add the following code on failure, and Windows will tell you what's
wrong:

 LPVOID lpMsgBuf;

 // Format error message from system

 ::FormatMessage(
  FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
  NULL,
  GetLastError(),
  MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
  (LPTSTR) &lpMsgBuf,
  0,
  NULL
 );

  AfxMessageBox((LPCSTR)lpMsgBuf);

 // Free the buffer.
 LocalFree( lpMsgBuf );

this section of the article mentioned below would show correct usage
Behavior of CreateProcess When Executing a 16-bit .exe
INFO: Understanding CreateProcess and Command-line Arguments
Last reviewed: October 30, 1997
Article ID: Q175986

--
----------------------------------------
Rajesh Parikh
Microsoft Certified Solution Developer

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