此例是把C#结构传给C++
C++：
typedef struct VidyoClientInEventGroupChat_
{
/*! Message (contents) to be sent to all remote participants */
char message[MAX_CHAT_MESSAGE_LEN];
} VidyoClientInEventGroupChat;
C#：
[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;
}
};