How to resolve debug assertion error when calling dialog create function in mfc extension dll

채문석(jim) 41 Reputation points

I have code like below:

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m_pPreviewDlg.Create(IDD_DIALOG_PREVIEW); The error below occurs in this code.

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What is the solution?

I am using visual studio 2022

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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Accepted answer
  1. RLWA32 41,911 Reputation points

    You cannot use an MFC Extension DLL in your solution from a Windows Forms Application. From MFC extension DLLs: Overview -- "Only MFC executables (either applications or regular MFC DLLs) that are built with the shared version of MFC can use an MFC extension DLL."

    Use a regular MFC DLL instead.

    1 person found this answer helpful.

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