CPU Usage of every process

问题:

I found this code on google that calculate of % of usage of current process on win10,but what i'm looking for is a list of % of CPU Usage of every process. I use GetCurrentProcess() to have the handle of the current process. Is there a way to retrieve the handle of every processes?i'm working on a code that lists running process and calculate usage memory for everyone. Then i need to calculate cpu usage for everyone but i didn't find anything on google.

    static ULARGE_INTEGER lastCPU, lastSysCPU, lastUserCPU;
    static int numProcessors;
    static HANDLE self;

    void init(){
    SYSTEM_INFO sysInfo;
    FILETIME ftime, fsys, fuser;

    GetSystemInfo(&sysInfo);
    numProcessors = sysInfo.dwNumberOfProcessors;

    GetSystemTimeAsFileTime(&ftime);
    memcpy(&lastCPU, &ftime, sizeof(FILETIME));

    self = GetCurrentProcess();
    GetProcessTimes(self, &ftime, &ftime, &fsys, &fuser);
    memcpy(&lastSysCPU, &fsys, sizeof(FILETIME));
    memcpy(&lastUserCPU, &fuser, sizeof(FILETIME));
    }

    double getCurrentValue(){
    FILETIME ftime, fsys, fuser;
    ULARGE_INTEGER now, sys, user;
    long double  percent;

    GetSystemTimeAsFileTime(&ftime);
    memcpy(&now, &ftime, sizeof(FILETIME));

    GetProcessTimes(GetCurrentProcess(), &ftime, &ftime, &fsys, &fuser);
    memcpy(&sys, &fsys, sizeof(FILETIME));
    memcpy(&user, &fuser, sizeof(FILETIME));
    percent = (sys.QuadPart - lastSysCPU.QuadPart) +
    (user.QuadPart - lastUserCPU.QuadPart);
    percent /= (now.QuadPart - lastCPU.QuadPart);
    percent /= numProcessors;
    lastCPU = now;
    lastUserCPU = user;
    lastSysCPU = sys;

    return percent * 100;
    }

I'm able to have the list of all running processes but i'm looking for to
calculate cpu usage for every process.
Suggestions?