C++/C#结构体转化-二维数组

String To bytes

typedef struct VidyoClientInEventGroupChat_
{
    /*! Message (contents) to be sent to all remote participants */
    char message[MAX_CHAT_MESSAGE_LEN];
} VidyoClientInEventGroupChat;

   [StructLayout(LayoutKind.Sequential)]
        public struct VidyoClientInEventGroupChat
        {
            unsafe fixed byte message[MAX_CHAT_MESSAGE_LEN];
            public unsafe bool SetMessage(string message)
            {
                byte[] bytes = UnicodeStringToUtf8Array(message);
                if (bytes.Length > MAX_CHAT_MESSAGE_LEN)
                {
                    return false;
                }
                fixed (VidyoClientInEventGroupChat* p = &this)
                    for (int i = 0; i < bytes.Length; i++)
                    {
                        p->message[i] = bytes[i];
                    }
                return true;
            }
        };

bytes To String

typedef struct VidyoClientRequestGetWindowsAndDesktops_
{
    /*! The number of application windows currently open */
    VidyoSizeT numApplicationWindows;
    /*! List of open application window names (UTF-8) (Localized) */
    char appWindowName[MAX_NUM_APP_WINDOWS][MAX_URI_LEN];
    /*! List of open application window application names (UTF-8) (Localized) */
    char appWindowAppName[MAX_NUM_APP_WINDOWS][MAX_URI_LEN];
    /*! List of open application window handles */
    VidyoWindowCapturerWindowId appWindowId[MAX_NUM_APP_WINDOWS];
    /*! List of open application window geometries */
    VidyoRect appWindowRect[MAX_NUM_APP_WINDOWS];
    /*! The number of system desktops currently available */
    VidyoSizeT numSystemDesktops;
    /*! List of available system desktop names (UTF-8) (Not localized) */
    char sysDesktopName[MAX_SHARE_DISPLAY_DEVICE][MAX_URI_LEN];
    /*! List of available system desktop handles */
    VidyoWindowCapturerWindowId sysDesktopId[MAX_SHARE_DISPLAY_DEVICE];
    /*! List of available system desktop geometries */
    VidyoRect sysDesktopRect[MAX_SHARE_DISPLAY_DEVICE];
} VidyoClientRequestGetWindowsAndDesktops;

static public string UnicodeStringFromUtf8Array(byte[] bytUTF8)
        {
            byte[] bytUnicode = Encoding.Convert(Encoding.UTF8, Encoding.Unicode, bytUTF8);
            int cntUnicode = Encoding.Unicode.GetCharCount(bytUnicode);
            char[] charUnicode = Encoding.Unicode.GetChars(bytUnicode);
            int j = 0;
            for (; j < cntUnicode; j++)
            {
                if (charUnicode[j] == 0)
                    break;
            }
            string strUnicode = Encoding.Unicode.GetString(bytUnicode, 0, j * 2);
            return strUnicode;
        }


        [Serializable]
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        unsafe public struct VidyoClientRequestGetWindowsAndDesktops
        {
            public uint numApplicationWindows;

            [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_NUM_APP_WINDOWS * MAX_URI_LEN)]
            public byte[] appWindowName;

            [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_NUM_APP_WINDOWS * MAX_URI_LEN)]
            public byte[] appWindowAppName;

            [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_NUM_APP_WINDOWS)]
            public uint[] appWindowId;



            [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.Struct, SizeConst = MAX_NUM_APP_WINDOWS)]
            public VidyoRect[] appWindowRect;

            public uint numSystemDesktops;

            [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_SHARE_DISPLAY_DEVICE * MAX_URI_LEN)]
            public byte[] sysDesktopName;

            [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_SHARE_DISPLAY_DEVICE)]
            public uint[] sysDesktopId;


            [MarshalAs(UnmanagedType.ByValArray, ArraySubType = UnmanagedType.Struct, SizeConst = MAX_SHARE_DISPLAY_DEVICE)]
            public VidyoRect[] sysDesktopRect;



            public string[] GetappWindowList()
            { 
                int numApp = (int)(numApplicationWindows);
                string[] appWindowList = new string[numApp];
                byte[] bytUTF8 = new byte[MAX_URI_LEN];
                for (int i = 0; i < numApplicationWindows; i++)
                {
                    for (int j = 0; j < MAX_URI_LEN; j++)
                    {
                        bytUTF8[j] = appWindowName[j + i * Vidyo32.MAX_URI_LEN];
                    }
                    if (bytUTF8[0] != 0)
                    { appWindowList[i] = UnicodeStringFromUtf8Array(bytUTF8); }
                    else
                    { appWindowList[i] = ""; }
                }

                return appWindowList;
            }
            public string[] GetappWindowAppList()
            {
                int numApp = (int)(numApplicationWindows);
                string[] appWindowList = new string[numApp];
                byte[] bytUTF8 = new byte[MAX_URI_LEN];
                for (int i = 0; i < numApplicationWindows; i++)
                {
                    for (int j = 0; j < MAX_URI_LEN; j++)
                    {
                        bytUTF8[j] = appWindowAppName[j + i * Vidyo32.MAX_URI_LEN];
                    }
                    if (bytUTF8[0] != 0)
                    { appWindowList[i] = UnicodeStringFromUtf8Array(bytUTF8); }
                    else
                    { appWindowList[i] = ""; }
                }

                return appWindowList;
            }
            public string[] GetDesktopList()
            {
                int numApp = (int)(numSystemDesktops);
                string[] appWindowList = new string[numApp];
                byte[] bytUTF8 = new byte[MAX_URI_LEN];
                for (int i = 0; i < numSystemDesktops; i++)
                {
                    for (int j = 0; j < MAX_URI_LEN; j++)
                    {
                        bytUTF8[j] = sysDesktopName[j + i * Vidyo32.MAX_URI_LEN];
                    }
                    if (bytUTF8[0] != 0)
                    { appWindowList[i] = UnicodeStringFromUtf8Array(bytUTF8); }
                    else
                    { appWindowList[i] = ""; }
                }

                return appWindowList; 
            }