枚举所有进程

 

 

/*
Takes a snapshot of the specified processes, as well as the heaps, modules, and threads used by these processes.
*/

HANDLE WINAPI CreateToolhelp32Snapshot(
  __in          DWORD dwFlags,
  __in          DWORD th32ProcessID
);

/*
Retrieves information about the first process encountered in a system snapshot.
*/

BOOL WINAPI Process32First(
  __in          HANDLE hSnapshot,
  __in_out      LPPROCESSENTRY32 lppe
);

/*
Retrieves information about the next process recorded in a system snapshot.
*/

BOOL WINAPI Process32Next(
  __in          HANDLE hSnapshot,
  __out         LPPROCESSENTRY32 lppe
);

 

 

 

#include <windows.h>
#include <tlhelp32.h>
#include <stdio.h>

int main()
{
    PROCESSENTRY32 processEntry = {0};

    HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if(hProcessSnap == INVALID_HANDLE_VALUE)
        return -1;
    processEntry.dwSize = sizeof(PROCESSENTRY32);
    int cnt = 0;
    BOOL bRet = Process32First(hProcessSnap, &processEntry);
    while(bRet)
    {
        ++cnt;
        printf("ProcessID: %d (%s)\n", processEntry.th32ProcessID, processEntry.szExeFile);
        bRet = Process32Next(hProcessSnap, &processEntry);
    }
    CloseHandle(hProcessSnap);
    printf("cnt = %d\n", cnt);
}