add rdp rdc11

mRemoteNG/Connection/Protocol/RDP/RdpProtocol11.cs

@@ -0,0 +1,26 @@
+using System.Runtime.Versioning;
+using System.Windows.Forms;
+using AxMSTSCLib;
+using MSTSCLib;
+
+namespace mRemoteNG.Connection.Protocol.RDP
+{
+    [SupportedOSPlatform("windows")]
+    public class RdpProtocol11 : RdpProtocol10
+    {
+        private MsRdpClient11NotSafeForScripting RdpClient11 => (MsRdpClient11NotSafeForScripting)((AxHost)Control).GetOcx();
+
+        protected override RdpVersion RdpProtocolVersion => RdpVersion.Rdc11;
+
+        protected override AxHost CreateActiveXRdpClientControl()
+        {
+            return new AxMsRdpClient11NotSafeForScripting();
+        }
+
+        protected override void UpdateSessionDisplaySettings(uint width, uint height)
+        {
+            RdpClient11.UpdateSessionDisplaySettings(width, height, width, height, 0, 1, 1);
+        }
+
+    }
+}

mRemoteNG/Connection/Protocol/RDP/RdpProtocolFactory.cs

@@ -24,6 +24,8 @@ namespace mRemoteNG.Connection.Protocol.RDP
                     return new RdpProtocol9();
                 case RdpVersion.Rdc10:
                     return new RdpProtocol10();
+                case RdpVersion.Rdc11:
+                    return new RdpProtocol11();
                 default:
                     throw new ArgumentOutOfRangeException(nameof(rdpVersion), rdpVersion, null);
             }

mRemoteNG/Connection/Protocol/RDP/RdpVersion.cs

@@ -7,6 +7,7 @@
         Rdc8,
         Rdc9,
         Rdc10,
+        Rdc11,
         Highest = 1000
     }
-}
+}