C++程序  |  60行  |  3.37 KB

/**
 * This file has no copyright assigned and is placed in the Public Domain.
 * This file is part of the mingw-w64 runtime package.
 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
 */
#ifndef _ICRSINT_H_
#define _ICRSINT_H_

#include <olectl.h>
#include <stddef.h>

class CADORecordBinding;

#define classoffset(base,derived) ((DWORD_PTR)(static_cast<base*>((derived*)8))-8)

enum ADOFieldStatusEnum {
  adFldOK = 0,adFldBadAccessor = 1,adFldCantConvertValue = 2,adFldNull = 3,adFldTruncated = 4,adFldSignMismatch = 5,adFldDataOverFlow = 6,
  adFldCantCreate = 7,adFldUnavailable = 8,adFldPermissionDenied = 9,adFldIntegrityViolation = 10,adFldSchemaViolation = 11,adFldBadStatus = 12,
  adFldDefault = 13
};

typedef struct stADO_BINDING_ENTRY {
  ULONG_PTR ulOrdinal;
  WORD wDataType;
  BYTE bPrecision;
  BYTE bScale;
  ULONG_PTR ulSize;
  ULONG_PTR ulBufferOffset;
  ULONG_PTR ulStatusOffset;
  ULONG_PTR ulLengthOffset;
  ULONG_PTR ulADORecordBindingOffSet;
  WINBOOL fModify;
} ADO_BINDING_ENTRY;

#define BEGIN_ADO_BINDING(cls) public: typedef cls ADORowClass; \
  const ADO_BINDING_ENTRY *WINAPI GetADOBindingEntries() { static const ADO_BINDING_ENTRY rgADOBindingEntries[] = {
#define ADO_FIXED_LENGTH_ENTRY(Ordinal,DataType,Buffer,Status,Modify) {Ordinal,DataType,0,0,0,offsetof(ADORowClass,Buffer),offsetof(ADORowClass,Status),0,classoffset(CADORecordBinding,ADORowClass),Modify},
#define ADO_FIXED_LENGTH_ENTRY2(Ordinal,DataType,Buffer,Modify) {Ordinal,DataType,0,0,0,offsetof(ADORowClass,Buffer),0,0,classoffset(CADORecordBinding,ADORowClass),Modify},
#define ADO_NUMERIC_ENTRY(Ordinal,DataType,Buffer,Precision,Scale,Status,Modify) {Ordinal,DataType,Precision,Scale,0,offsetof(ADORowClass,Buffer),offsetof(ADORowClass,Status),0,classoffset(CADORecordBinding,ADORowClass),Modify},
#define ADO_NUMERIC_ENTRY2(Ordinal,DataType,Buffer,Precision,Scale,Modify) {Ordinal,DataType,Precision,Scale,0,offsetof(ADORowClass,Buffer),0,0,classoffset(CADORecordBinding,ADORowClass),Modify},
#define ADO_VARIABLE_LENGTH_ENTRY(Ordinal,DataType,Buffer,Size,Status,Length,Modify) {Ordinal,DataType,0,0,Size,offsetof(ADORowClass,Buffer),offsetof(ADORowClass,Status),offsetof(ADORowClass,Length),classoffset(CADORecordBinding,ADORowClass),Modify},
#define ADO_VARIABLE_LENGTH_ENTRY2(Ordinal,DataType,Buffer,Size,Status,Modify) {Ordinal,DataType,0,0,Size,offsetof(ADORowClass,Buffer),offsetof(ADORowClass,Status),0,classoffset(CADORecordBinding,ADORowClass),Modify},
#define ADO_VARIABLE_LENGTH_ENTRY3(Ordinal,DataType,Buffer,Size,Length,Modify) {Ordinal,DataType,0,0,Size,offsetof(ADORowClass,Buffer),0,offsetof(ADORowClass,Length),classoffset(CADORecordBinding,ADORowClass),Modify},
#define ADO_VARIABLE_LENGTH_ENTRY4(Ordinal,DataType,Buffer,Size,Modify) {Ordinal,DataType,0,0,Size,offsetof(ADORowClass,Buffer),0,0,classoffset(CADORecordBinding,ADORowClass),Modify},
#define END_ADO_BINDING() {0,adEmpty,0,0,0,0,0,0,0,FALSE}}; return rgADOBindingEntries;}

class CADORecordBinding {
public:
  STDMETHOD_(const ADO_BINDING_ENTRY*,GetADOBindingEntries) (VOID) PURE;
};

struct __declspec(uuid("00000544-0000-0010-8000-00aa006d2ea4")) IADORecordBinding;
DECLARE_INTERFACE_(IADORecordBinding,IUnknown) {
public:
  STDMETHOD(BindToRecordset) (CADORecordBinding *pAdoRecordBinding) PURE;
  STDMETHOD(AddNew) (CADORecordBinding *pAdoRecordBinding) PURE;
  STDMETHOD(Update) (CADORecordBinding *pAdoRecordBinding) PURE;
};
#endif