Error: Did not find a dialog class with the specified ID

Question

I add dialog class for dialog resource by right click resource and select Add Class in designer.

In header file and cpp file of the dialog class, I add:

namespace N01 {
namespace N02 {
}
}

around codes in those files

When I add a edit box control on dialog resource in design view and right click on the control then select Add Variable, I get error of: Did not find a dialog class with the specified ID

Thanks.

Answer 1

It is probably possible to find some workarounds; for example, you can replace the namespace declarations with a macro (inside the .h file only):

#define NS(n) namespace n {


NS(N01) NS(N02)

   // Dialog class
   Class MyDialog
   {
      . . .
   }
} }

Then “Add Variable…” should work. However, MFC was not designed for such scenarios and some of special features, introduced by existing DECLARE_DYNAMIC macros, probably will not always work.