CreateToolhelp32Snapshot metodu

Giriş
Process'leri dolaşabilmeyi sağlar.
1. CreateToolhelp32Snapshot() ile handle açılır
2. Process32First() ile okuma yapılır
3. Process32Next() ile döngü içinde okuma yapılır

Örnek
Şöyle yaparız.

DWORD get_process_id_by_process_name(const char* process_name_){
  PROCESSENTRY32 process_entry = { sizeof(PROCESSENTRY32) };
  HANDLE processes_snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);

  // loop through all process to find one that matches the process_name_
  if (Process32First(processes_snapshot, &process_entry)){
    do{
      if (strcmp(process_entry.szExeFile, process_name_) == 0){
        CloseHandle(processes_snapshot);
        return process_entry.th32ProcessID;
      }
    } while (Process32Next(processes_snapshot, &process_entry));
  }

  CloseHandle(processes_snapshot);
  return NULL;
}

Örnek
Şöyle yaparız

HANDLE hSnapshot;

PROCESSENTRY32  hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
proc32.dwSize = sizeof(PROCESSENTRY32);

if(Process32First(hSnapshot, &proc32))
{
  cout << proc32.szExeFile << endl;
  while(Process32Next(hSnapshot, &proc32))
     cout << proc32.szExeFile << endl;
}