◄Contents► ◄Index► ◄Back► ──────────────────────────────────────────────────────────────────────────── MCI_OVLY_OPEN_PARMS The MCI_OVLY_OPEN_PARMS structure contains information for MCI_OPEN message for video overlay devices. When assigning data to the fields in this data structure, set the corresponding MCI flags in the dwFlags parameter of mciSendCommand to validate the fields. You can use the MCI_OPEN_PARMS data structure in place of MCI_OVLY_OPEN_PARMS if you are not using the extended data fields. typedef struct { DWORD dwCallback; UINT wDeviceID; UINT wReserved0; LPCSTR lpstrDeviceType; LPCSTR lpstrElementName; LPCSTR lpstrAlias; DWORD dwStyle; DWORD hWndParent; UINT wReserved1; } MCI_OVLY_OPEN_PARMS; Fields DWORD dwCallback The low-order word specifies a window handle used for the MCI_NOTIFY flag. UINT wDeviceID Specifies the device ID returned to user. UINT wReserved0 Reserved. LPCSTR lpstrDeviceType Specifies the name or contstant ID of the device type obtained from the SYSTEM.INI file. LPCSTR lpstrElementName Specifies the device element name (usually a pathname). LPCSTR lpstrAlias Specifies an optional device alias. DWORD dwStyle Specifies the window style. DWORD hWndParent Specifies the handle to use as the window parent. UINT wReserved1 Reserved. See also MCI_OPEN -♦-