Fix wrapper for UWP

wrappers/csharp/wrapper_impl.mustache

@@ -30,7 +30,7 @@ namespace Linphone
 	/// <summary>
 	/// Only contains the LIB_NAME value that represents the library in which all DllImport are made
 	/// </summary>
-	public class LinphoneWrapper 
+	public class LinphoneWrapper
 	{
 #if __IOS__
 		public const string LIB_NAME = "linphone.framework/linphone";
@@ -86,7 +86,7 @@ namespace Linphone
 		protected LinphoneException(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context) { }
 	}
 #endif
-	
+
 	[StructLayout(LayoutKind.Sequential)]
 	/// <summary>
 	/// Parent class for a Linphone public objects
@@ -94,7 +94,7 @@ namespace Linphone
 	public class LinphoneObject
 	{
 		internal IntPtr nativePtr;
-		
+
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate void OnLinphoneObjectDataDestroyed(IntPtr data);
 
@@ -103,16 +103,16 @@ namespace Linphone
 
 		[DllImport(LinphoneWrapper.BELLE_SIP_LIB_NAME)]
 		static extern IntPtr belle_sip_object_data_get(IntPtr ptr, string name);
-		
+
 		[DllImport(LinphoneWrapper.BELLE_SIP_LIB_NAME)]
 		static extern IntPtr belle_sip_object_ref(IntPtr ptr);
-		
+
 		[DllImport(LinphoneWrapper.BELLE_SIP_LIB_NAME)]
 		static extern void belle_sip_object_unref(IntPtr ptr);
-		
+
 		[DllImport(LinphoneWrapper.BELLE_SIP_LIB_NAME)]
 		static extern IntPtr bctbx_list_next(IntPtr ptr);
-		
+
 		[DllImport(LinphoneWrapper.BELLE_SIP_LIB_NAME)]
 		static extern IntPtr bctbx_list_get_data(IntPtr ptr);
 
@@ -134,7 +134,7 @@ namespace Linphone
 				handle.Free();
 			}
 		}
-		
+
 		~LinphoneObject()
 		{
 			//Console.WriteLine("Destroying " + this.ToString());
@@ -143,7 +143,7 @@ namespace Linphone
 				belle_sip_object_unref(nativePtr);
 			}
 		}
-		
+
 		internal static T fromNativePtr<T>(IntPtr ptr, bool takeRef=true) where T : LinphoneObject, new()
 		{
 			if (ptr == IntPtr.Zero) return null;
@@ -184,7 +184,7 @@ namespace Linphone
 			}
 			return null;
 		}
-		
+
 		internal static IEnumerable<string> MarshalStringArray(IntPtr arrayPtr)
 		{
 			if (arrayPtr != IntPtr.Zero)
@@ -199,7 +199,7 @@ namespace Linphone
 				}
 			}
 		}
-		
+
 		internal static IEnumerable<T> MarshalBctbxList<T>(IntPtr listPtr) where T : LinphoneObject, new()
 		{
 			if (listPtr != IntPtr.Zero)
@@ -239,7 +239,7 @@ namespace Linphone
 			return bctbx_list;
 		}
 	}
-	
+
 #if ANDROID
 	/// <summary>
 	/// Methods that are only found in Android version of Linphone libraries and related to JNI
@@ -251,7 +251,7 @@ namespace Linphone
 
 		[DllImport(LinphoneWrapper.LIB_NAME)]
 		static extern void setMediastreamerAndroidContext(IntPtr jnienv, IntPtr context);
-		
+
 		/// <summary>
 		/// Sets the JVM and JNI pointers in Linphone, required to be able to make JAVA upcalls.
 		/// Calling this method is mandatory and must be done as soon as possible !
@@ -264,7 +264,7 @@ namespace Linphone
 	}
 #endif
 #endregion
-	
+
 #region Enums
 	{{#enums}}
 	{{#enum}}
@@ -284,11 +284,11 @@ namespace Linphone
 		{{name}} = {{value}},
 		{{/values}}
 	}
-	
+
 	{{/enum}}
 	{{/enums}}
 #endregion
-	
+
 #region Listeners
 	{{#interfaces}}
 	{{#interface}}
@@ -298,14 +298,19 @@ namespace Linphone
 		{{#methods}}
 		[DllImport(LinphoneWrapper.LIB_NAME)]
 		{{#cb_setter}}
+#if WINDOWS_UWP
+		static extern void {{name}}(IntPtr thiz, IntPtr cb);
+#else
 		static extern void {{name}}(IntPtr thiz, {{name_private}} cb);
+#endif
 		{{/cb_setter}}
-		
+
 		{{#delegate}}
 		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
 		private delegate void {{name_private}}({{params_private}});
-		
+
 		public delegate void {{name_public}}({{params_public}});
+		private {{name_private}} {{var_private}};
 		private {{name_public}} {{var_public}};
 
 #if __IOS__
@@ -328,17 +333,23 @@ namespace Linphone
 			set
 			{
 				{{var_public}} = value;
+#if WINDOWS_UWP
+				{{var_private}} = {{cb_name}};
+				IntPtr cb = Marshal.GetFunctionPointerForDelegate({{var_private}});
+				{{c_name_setter}}(nativePtr, cb);
+#else
 				{{c_name_setter}}(nativePtr, {{cb_name}});
+#endif
 			}
 		}
-		{{/delegate}}		
+		{{/delegate}}
 		{{/methods}}
 	}
-	
+
 	{{/interface}}
 	{{/interfaces}}
 #endregion
-	
+
 #region Classes
 	{{#classes}}
 	{{#_class}}
@@ -353,21 +364,21 @@ namespace Linphone
 		{{#isLinphoneFactory}}
 		[DllImport(LinphoneWrapper.LIB_NAME)]
 		static extern IntPtr linphone_factory_create_core_cbs(IntPtr factory);
-		
+
 		public CoreListener CreateCoreListener()
 		{
 			IntPtr coreCbsPtr = linphone_factory_create_core_cbs(nativePtr);
 			return fromNativePtr<CoreListener>(coreCbsPtr, false);
 		}
-		{{/isLinphoneFactory}}		
-		{{#dllImports}}		
+		{{/isLinphoneFactory}}
+		{{#dllImports}}
 		[DllImport(LinphoneWrapper.LIB_NAME)]
 		{{{prototype}}}
 		{{#has_second_prototype}}
 		[DllImport(LinphoneWrapper.LIB_NAME)]
 		{{second_prototype}}
 		{{/has_second_prototype}}
-		
+
 		{{#has_property}}
 		{{#doc}}
 		{{#lines}}
@@ -478,7 +489,7 @@ namespace Linphone
 		{{/has_impl}}
 		{{/dllImports}}
 	}
-	{{/_class}}	
+	{{/_class}}
 	{{/classes}}
 #endregion
-}
\ No newline at end of file
+}