Multiple choice technology programming languages

Which of the Following message type is invalid in Message Driven Architecture?

  1. Window messages (WM_)

  2. Control window messages (BM_)

  3. Dialog Box Messages( DB_)

  4. List box messages (LB_)

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C Correct answer
Explanation

Windows message prefixes are standardized: WM_ for window messages, BM_ for button control messages, LB_ for listbox messages, EM_ for edit control, CB_ for combobox, etc. DB_ for Dialog Box Messages is not a valid Windows message prefix - dialog boxes use standard WM_ messages or control-specific messages.