C / C++ / MFC

void foo()
{
  data d;
  // fill d;
  CreateThread(...,&d,...)
}

void foo()
{
  data* d=new data;
  // fill d;
  CreateThread(...,d,...)
}

MyThread(LPVOID arg)
{
  data * d=(data *)arg;
  ...
  delete d; // d no longer needed.
  ...
}

void foo()
{
  data* d=new data;
  // fill d;
  if(!CreateThread(...,d,...)){
    delete d; // no thread launched, clean up the mess ourselves
  }
}

char szBuffer[256];
mciSendString("status cdaudio media present", szBuffer, sizeof(szBuffer), NULL);
TRACE("szBuffer = ]%s[\n", szBuffer);

#include <windows.h>
#include <sys/types.h>
#include <sys/stat.h>
 
bool drive_present(const char letter)
{
  char nul_file[]="#:\\NUL";
  nul_file[0]=letter;
 
  DWORD error_mode=::SetErrorMode(0);
  ::SetErrorMode(error_mode|SEM_FAILCRITICALERRORS);
 
  struct _stat st;
  int res=_stat(nul_file,&st)==0;
 
  ::SetErrorMode(error_mode);
    
  return res!=0;
}

bool bContinue = true;

while (true == bContinue)
{
    // read port
    // ...
    // if situation warrants, set bContinue = false
}

return 0; // this line will cause the thread to exit normally