MAKEMSI quickly and reliably creates MSI files in a non-programmatic way\Source CodeCommandsDllCaEntry

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The "DllCaEntry" Command

This command along with the "/DllCaEntry" command are used to define a function which is exported by the generated DLL for scheduling with the "DllCa" command.

This function must be defined between the DllCa-C and /DllCa-C commands and it looks like (notice that you must return a return code):

UINT __stdcall CustomAction(MSIHANDLE hInstall);

This command takes these parameters:

• Friendly Entry Point Name (positional)
  This is a "friendly" name for the entry point (function) being defined. Always use the "DllCaEntry?" command to refer to it.

  Note that MAKEMSI creates a stub to front end your function (which is declared "static") so that it can log entry and exit into any verbose log.

COMPLETE EXAMPLE

Please see the "TryMeDllCustomAction.MM" example, and also the "Browse for File Dialog" tip.

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