typedef struct tagPROCESSENTRY32 {  
DWORD dwSize;  
DWORD cntUsage;  
DWORD th32ProcessID;  
ULONG_PTR th32DefaultHeapID;  
DWORD th32ModuleID;  
DWORD cntThreads;  
DWORD th32ParentProcessID;  
LONG pcPriClassBase;  
DWORD dwFlags;  
TCHAR szExeFile[MAX_PATH];
} PROCESSENTRY32,  *PPROCESSENTRY32;