CODEWITHSUNDEEP
c++mfcresources
wengseng
wengseng

Reputation: 1328

How to prevent duplicated resource ID in different plugins?

In MFC C++, When we add a new resourcein a EXE, says string, it will generate an ID automatically:

#define ID_SHOW_OUTPUT                 10313

When it has a plugin(DLL) which has the similar ID, it will cause undefined behavior after trigerred.

To play safe, I tried to define the my own private ID:

#define ID_SHOW_OUTPUT          (WM_APP+6)

However, I will have a lot of work if there are hundreds of resources in the EXE and DLL.

I'm not sure there is a better solution and prevention on duplicated resource ID across executables???

Upvotes: 1

Views: 2286

Answers (1)

mmonem
mmonem

Reputation: 2831

  • Check this add-in. It gives you a higher control over resource ids.

  • As Luke commented, there should not be problems using DLLs with duplicte resource ids. Only one resource module is active at a time using AfxSetResourceHandle

  • Setting Command IDs to arbitrary UINT values (In your question you assigned WM_APP + 6 to a command ID) is not safe since these values are interpreted by MFC in many places. Check this StackOverflow question for more details.

Upvotes: 4

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