C++/C# 最基本的Marshal和Ptr

Vidyo32.VidyoClientInEventLogin Login = new Vidyo32.VidyoClientInEventLogin();

Login.portalUri = this.tbxIP.Text.Trim(); //"http://kaunas.vidyo.scandihealth.net";

Login.userName = this.tbxID.Text.Trim(); //"test-sa3";

Login.userPass = this.tbxPwd.Text.Trim(); //"test-sa3";

int size = Marshal.SizeOf(Login);

IntPtr ptr = Marshal.AllocCoTaskMem(size);

Marshal.StructureToPtr(Login, ptr, false);

Int32 test = Vidyo32.VidyoClientSendEvent(Vidyo32.VidyoClientInEvent.VIDYO_CLIENT_IN_EVENT_LOGIN, ptr, size);

Login = (Vidyo32.VidyoClientInEventLogin)Marshal.PtrToStructure(ptr, typeof(Vidyo32.VidyoClientInEventLogin));

在此总结一句，C++结构体和C#结构体转换过程中，一定要注意内存大小一致