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- 02:45, 26 November 2025 Martini talk contribs created page MCI OPEN (Created page with "{{DISPLAYTITLE:MCI_OPEN}} This message is used to open or create a new device instance. ==Syntax== <PRE> param1 ULONG ulParam1; Flags for open operation.: param2 PMCI_OPEN_PARMS pParam2; Pointer to the MCI_OPEN_PARMS data structure.: </PRE> ==Parameters== ;''ulParam1'' (ULONG) - input :This parameter can contain any of the following flags. **MCI_OPEN_ELEMENT** and **MCI_OPEN_MMIO** are mutually exclusive flags: :* '''MCI_NOTIFY''' A notification message...")