在WinCE的C#编程中，需要静态调用C++的动态库，需要添加using System.Runtime.InteropServices

using System.Runtime.InteropServices;

        [DllImport("Win32DLL.dll", EntryPoint = "WriteREG_SZToRegTCHAR")]
        private static extern bool WriteREG_SZToRegTCHAR(int iFlag, string regKeyPath, string keyNameToSet, string tcValue);