Fixed generation of incomplete types by walking through the complete declarations.

src/Generator/Generators/CLI/CLIMarshal.cs

@@ -187,6 +187,9 @@ namespace CppSharp.Generators.CLI
 
         public override bool VisitClassDecl(Class @class)
         {
+            if (@class.CompleteDeclaration != null)
+                return VisitClassDecl(@class.CompleteDeclaration as Class);
+
             var instance = string.Empty;
 
             if (!Context.ReturnType.Type.IsPointer())
@@ -494,6 +497,9 @@ namespace CppSharp.Generators.CLI
 
         public override bool VisitClassDecl(Class @class)
         {
+            if (@class.CompleteDeclaration != null)
+                return VisitClassDecl(@class.CompleteDeclaration as Class);
+
             if (@class.IsValueType)
             {
                 MarshalValueClass(@class);

src/Generator/Generators/CLI/CLITypePrinter.cs

@@ -278,6 +278,9 @@ namespace CppSharp.Generators.CLI
 
         public string VisitClassDecl(Class @class)
         {
+            if (@class.CompleteDeclaration != null)
+                return VisitClassDecl(@class.CompleteDeclaration as Class);
+
             return string.Format("{0}{1}", @class.Name, @class.IsRefType ? "^"
                 : string.Empty);
         }