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

Dudu 161 Reputation points

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


A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
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  1. Viorel 114.4K Reputation points

    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.

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