how can i let my program add someting into the registry, like adding something into the "HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/run/" folder so my program starts when you log in.

Look up the registry functions on MSDN, like RegOpenKeyEx, RegQueryValueEx, etc.

There is also a class called CRegKey that lets you manipulate the registry too. Look it up on MSDN. Don''t worry, it''s not MFC.

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P.S. to use CRegKey, you''ll need to include atlbase.h.