Hi,

I have a library assembly written in C# with an attribute class defined. Its constructor takes a param of type "object".

In the client app written in C++, my form class has a private class that uses this attribute for one of its properties. The actual param passed to the attribute constructor is a primitive type so this compiles well. When loading the form in the designer (VS2005), I get the message "The designer could not be shown for this file because none of the classes within it can be designed". If I replace the argument type by Double for instance, it works well. I have also no issue with a C# client app.

Is it a known issue? Something I can do about it? Thank you.

Nicolas