🚀 go-pugleaf

Sometimes when I run the dos program it appears to terminate before it is
finished.  It should overwrite a few bytes at the start of the output file
it writes before finishing.  I did not make the dos program.

I think the problem is to do with this:
DWORD WaitForSingleObject(

    HANDLE hHandle, // handle of object to wait for
    DWORD dwMilliseconds  // time-out interval in milliseconds
   );


Parameters

hHandle

Identifies the object. For a list of the object types whose handles can be
specified, see the following Remarks section.
Windows NT: The handle must have SYNCHRONIZE access. For more information,
see Access Masks and Access Rights.




 bool RunDosApp(String const parameter) {
  STARTUPINFO si;
  PROCESS_INFORMATION pi;
  std::memset(&pi, 0, sizeof(pi));
  std::memset(&si, 0, sizeof(si));
  si.cb=sizeof(si);
  String command_line("csw.exe \"");
  command_line=command_line+parameter+'\"';
  // Run the DOS executable with CreateProcess.
  int res=CreateProcess(NULL, command_line.c_str(), 0, 0, false,
   CREATE_NEW_CONSOLE, 0, 0, &si, &pi);
  if (!res) {
   // Error...
   res=GetLastError();
   }
  else {
   // If we get here, CreateProcess succeeded in starting the DOS app.
   res=WaitForSingleObject(pi.hProcess, INFINITE);
   // Close process and thread handles.
   CloseHandle( pi.hProcess );
   CloseHandle( pi.hThread );
   // Error?
   if (res==WAIT_FAILED)
    res=GetLastError();
   else // All OK, return true.
    return true;
   }
  if (res)
   // Something went awry so let the user know.
   ShowMessage("Error code is "+(res+'0'));
  // Won't get here unless something went wrong.
  return false;
  }


Fraser.