BOOL IsRunasAdmin() 
{
    BOOL bElevated = FALSE;  
    HANDLE hToken = NULL;  

    // Get current process token
    if ( !OpenProcessToken( GetCurrentProcess(), TOKEN_QUERY, &hToken ) )
        return FALSE;

    TOKEN_ELEVATION tokenEle;
    DWORD dwRetLen = 0;  

    // Retrieve token elevation information
    if ( GetTokenInformation( hToken, TokenElevation, &tokenEle, sizeof(tokenEle), &dwRetLen ) ) 
    {  
        if ( dwRetLen == sizeof(tokenEle) ) 
        {
            bElevated = tokenEle.TokenIsElevated;  
        }
    }  

    CloseHandle( hToken );  
    return bElevated;  
} 

判断进程是否以管理员权限运行（***）