c++ - C++ 在 CreateToolhelp32Snapshot 上返回错误 87

Question

我无法弄清楚问题出在哪里。当我运行下面的代码时，它返回错误代码 87，我已经验证了所有参数，但我不知道出了什么问题。一些帮助？

BOOL ProcessList() {
    bool FoundInList = false;
    string CommonProcesses[] = {"System", "explorer.exe", "chrome.exe", "firefox.exe", "iexplore.exe", "svchost.exe", "smss.exe", "crss.exe", "wininit.exe", "steam.exe", "devenv.exe", "thunderbird.exe", "skype.exe", "Skype.exe", "pidgin.exe"};
    HANDLE hProcessSnap;
    PROCESSENTRY32 pe32;
    DWORD dwPriorityClass;
    hProcessSnap = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, NULL );
    pe32.dwSize = sizeof( PROCESSENTRY32 );
    Process32First( hProcessSnap, &pe32 );
    do
    {
        if( GetLastError() ) {
            cout << GetLastError();
            system( "pause" );
        }
        wstring pn( pe32.szExeFile );
        string ProcessName( pn.begin(),pn.end() );
        for ( int i = 0; i <= 15; i++ ) {
            if ( ProcessName == CommonProcesses[i] ) {
                FoundInList = true;
            }
        }
        if ( !FoundInList ) {
            cout << ProcessName << "\n";
            GetProcessInfo( ProcessName, pe32.th32ProcessID );
        }
        FoundInList = false;

    } while( Process32Next( hProcessSnap, &pe32 ) );

    CloseHandle( hProcessSnap );
    return( TRUE );
}