144 lines
3.8 KiB
C++
144 lines
3.8 KiB
C++
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/************************************************************************
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** D A O G E T R W . H *
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** *
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** GetRows interface *
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** *
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** Warning: The interface defined in this file is for internal use by *
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** the Microsoft Foundation Classes and the dbdao C++ classes. *
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** Future releases of DAO may not be completely compatible with this *
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** implementation. However, if you write to the MFC or dbdao *
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** classes that use this interface, those classes will continue to *
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** be compatible even if this underlying interface changes. *
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** *
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*************************************************************************
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** Copyright (C) 1995 by Microsoft Corporation *
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** All Rights Reserved *
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************************************************************************/
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#if !defined (_DAOGETRW_H_)
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#define _DAOGETRW_H_
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/*
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Enumerations
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*/
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typedef enum
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{
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DAOCOLKIND_IND = 0,
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DAOCOLKIND_STR,
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DAOCOLKIND_WSTR
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} DAOCOLKIND;
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typedef enum
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{
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DAO_I2 = 0,
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DAO_I4,
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DAO_R4,
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DAO_R8,
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DAO_CURRENCY,
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DAO_DATE,
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DAO_BOOL,
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DAO_BSTR,
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DAO_LPSTR,
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DAO_LPWSTR,
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DAO_BLOB,
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DAO_BYTES,
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DAO_CHAR,
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DAO_WCHAR,
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DAO_ANYVARIANT,
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DAO_BOOKMARK,
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DAO_BYTE,
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DAO_GUID,
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DAO_DATATYPEMAX
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} DAODATATYPE;
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/*
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Macros
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*/
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#define DAO_NOINDICATOR 0xffffffff
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#define DAO_NULL 0xffffffff
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#define DAO_CANTCOERCE 0xfffffffc
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#define DAO_NOMAXLENGTH 0x00000000
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#define DAOROWFETCH_CALLEEALLOCATES 0x00000001
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#define DAOROWFETCH_DONTADVANCE 0x00000002
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#define DAOROWFETCH_FORCEREFRESH 0x00000004
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#define DAOROWFETCH_BINDABSOLUTE 0x00000008
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#define DAOBINDING_DIRECT 0x00000001
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#define DAOBINDING_VARIANT 0x00000002
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#define DAOBINDING_CALLBACK 0x00000004
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/*
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Structures
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*/
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typedef struct
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{
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DWORD dwKind;
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union
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{
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LONG ind;
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LPCSTR lpstr;
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LPCWSTR lpwstr;
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};
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} DAOCOLUMNID;
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typedef DAOCOLUMNID *LPDAOCOLUMNID;
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// Callback for binding
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EXTERN_C typedef HRESULT (STDAPICALLTYPE *LPDAOBINDFUNC)(ULONG cb, DWORD dwUser, LPVOID *ppData);
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#define DAOBINDINGFUNC(f) STDAPI f (ULONG cb, DWORD dwUser, LPVOID *ppData)
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typedef struct
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{
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DAOCOLUMNID columnID;
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ULONG cbDataOffset;
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ULONG cbMaxLen;
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ULONG cbInfoOffset;
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DWORD dwBinding;
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DWORD dwDataType;
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DWORD dwUser;
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} DAOCOLUMNBINDING;
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typedef DAOCOLUMNBINDING *LPDAOCOLUMNBINDING;
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typedef struct
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{
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ULONG cRowsRequested;
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DWORD dwFlags;
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LPVOID pData;
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LPVOID pVarData;
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ULONG cbVarData;
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ULONG cRowsReturned;
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} DAOFETCHROWS;
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typedef DAOFETCHROWS *LPDAOFETCHROWS;
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/*
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New Errors
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**NOTE: OLE standard ids to be determined.
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*/
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#define GETROWSUCCESS(x) MAKE_SCODE(SEVERITY_SUCCESS, FACILITY_ITF, x)
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#define GETROWERR(x) MAKE_SCODE(SEVERITY_ERROR, FACILITY_ITF, x)
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#define S_BUFFERTOOSMALL GETROWSUCCESS(0x1000)
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#define S_ENDOFCURSOR GETROWSUCCESS(0x1001)
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#define S_SILENTCANCEL GETROWSUCCESS(0x1002)
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#define S_RECORDDELETED GETROWSUCCESS(0x1003)
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#define E_ROWTOOSHORT GETROWERR(0x1000)
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#define E_BADBINDINFO GETROWERR(0x1001)
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#define E_COLUMNUNAVAILABLE GETROWERR(0x1002)
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/*
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Interfaces
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*/
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#undef INTERFACE
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#define INTERFACE ICDAORecordset
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DECLARE_INTERFACE_(ICDAORecordset, IDispatch)
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{
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STDMETHOD(GetRows) (THIS_ LONG cRowsToSkip, LONG cCol, LPDAOCOLUMNBINDING prgBndCol, ULONG cbRowLen, LPDAOFETCHROWS pFetchRows) PURE;
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};
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#endif // _DAOGETRW_H_
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