c++/qt程序单例启动,寻找当前程序是否已经存在系统中

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

bool FindProcess(QString strProcessName)
{
    bool bFind = false;
    PROCESSENTRY32 pInfo;
    pInfo.dwSize = sizeof(pInfo);

    DWORD dCurProcesssID = GetCurrentProcessId();          // 获取当前进程ID
    HANDLE hSnapShot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    Process32First(hSnapShot, &pInfo);

    do
    {
        QString strTempProcessName = (QString::fromUtf16(reinterpret_cast<const unsigned short *>(pInfo.szExeFile)));

        // 判断当前得到的进程名称是否和指定进程名称相同同时进程ID和当前进程的进程ID不相同
        if (strTempProcessName == strProcessName && dCurProcesssID != pInfo.th32ProcessID)
        {
            bFind = true;
        }
    } while (Process32Next(hSnapShot, &pInfo));

    return bFind;
}