根据进程名称获取PID

#include <iostream>  
#include <string>  
#include <map>  
#include <windows.h>  
#include <TlHelp32.h> 
using namespace std;  

int FindPID(string ProcessName)   
{  
    PROCESSENTRY32 pe32;  
    pe32.dwSize = sizeof(pe32); 
    HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if(hProcessSnap == INVALID_HANDLE_VALUE) {  
        cout << "CreateToolhelp32Snapshot Error!" << endl;;  
        return false;  
    }  
    BOOL bResult =Process32First(hProcessSnap, &pe32);  
    int num(0);  
    while(bResult)   
    {  
        if(pe32.szExeFile==ProcessName)
        {
            return pe32.th32ProcessID;  
        }
        bResult = Process32Next(hProcessSnap,&pe32);  
    }  
    CloseHandle(hProcessSnap);  
    return -1;  
}  
int main()  
{  
    cout<<FindPID("game.exe");
    return 0;  
}