操作注册表

HKEY hKey;
//打开注册表:路径如下
//HEKY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
LSTATUS lRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
    L"Software\\Microsoft\\Windows\\CurrentVersion\\Run", 0, KEY_WRITE, &hKey);
if (lRet != ERROR_SUCCESS)
{
    LPVOID message;
    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
        NULL, lRet, NULL, (LPTSTR)&message, 0, NULL);
    MessageBox((LPCTSTR)message, L"ERROR", MB_OK | MB_ICONINFORMATION);
}
//新增一个值,名称随意命名,值为要开机运行的文件的完整路径
wstring appPath = getAppPath() + L"/videoHelper.exe";
lRet = RegSetValueEx(hKey,L"videoHelper",
    0, REG_EXPAND_SZ, (const BYTE*)appPath.c_str(), appPath.size()*2);
if (lRet != ERROR_SUCCESS)
{
    LPVOID message;
    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
        NULL, lRet, NULL, (LPTSTR)&message, 0, NULL);
    MessageBox((LPCTSTR)message, L"ERROR", MB_OK | MB_ICONINFORMATION);
}
lRet = RegCloseKey(hKey);
if (lRet != ERROR_SUCCESS)
{
    LPVOID message;
    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
        NULL, lRet, NULL, (LPTSTR)&message, 0, NULL);
    MessageBox((LPCTSTR)message, L"ERROR", MB_OK | MB_ICONINFORMATION);
}