home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
C Programming Starter Kit 2.0
/
SamsPublishing-CProgrammingStarterKit-v2.0-Win31.iso
/
bc45
/
owlinc.pak
/
STGDOC.H
< prev
next >
Wrap
C/C++ Source or Header
|
1997-07-23
|
3KB
|
96 lines
//----------------------------------------------------------------------------
// ObjectWindows
// (C) Copyright 1993, 1994 by Borland International, All Rights Reserved
//
//----------------------------------------------------------------------------
#if !defined(OWL_STGDOC_H)
#define OWL_STGDOC_H
#if !defined(OWL_DOCVIEW_H)
# include <owl/docview.h>
#endif
#if !defined(__IOSTREAM_H)
# include <iostream.h>
#endif
//
// forward reference OLE interface without including headers
//
#if defined(BI_PLAT_WIN16)
class __huge IStorage;
class __huge IStream;
#else
class IStorage;
class IStream;
#endif
//
// class TStorageDocument
// ----- ----------------
//
class _USERCLASS TStorageDocument : public TDocument {
public:
enum TStgDocProp {
PrevProperty = TDocument::NextProperty-1,
CreateTime, // FILETIME
ModifyTime, // FILETIME
AccessTime, // FILETIME
StorageSize, // unsigned long
IStorageInstance, // IStorage*
NextProperty,
};
TStorageDocument(TDocument* parent = 0)
: TDocument(parent), StorageI(0), OpenCount(0),
CanRelease(false), OrgStorageI(0), LockBytes(0) {}
~TStorageDocument();
virtual bool ReleaseDoc();
// implement virtual methods of TDocument
//
TInStream* InStream(int omode, const char far* strmId=0);
TOutStream* OutStream(int omode, const char far* strmId=0);
bool Open(int omode, const char far* stgId);
bool Close();
bool Commit(bool force = false);
bool CommitTransactedStorage();
bool Revert(bool clear = false);
bool SetDocPath(const char far* path);
bool IsOpen() {return (StorageI != 0);}
int FindProperty(const char far* name); // return index
int PropertyFlags(int index);
const char* PropertyName(int index);
int PropertyCount() {return NextProperty - 1;}
int GetProperty(int index, void far* dest, int textlen=0);
bool SetProperty(int index, const void far* src);
// additional methods for obtaining IStorage
//
virtual bool SetStorage(IStorage* stg, bool remember = true); // Set a new IStorage
virtual bool RestoreStorage();
virtual bool OpenHandle(int omode, HANDLE hGlobal); // open on global memory
virtual bool SetHandle(int omode, HANDLE hGlobal, bool create = false, bool remember = false);
virtual bool GetHandle(HGLOBAL* handle);
IStorage* GetStorage() {return StorageI;}
protected:
int ThisOpen; // actual mode bits used for opening storage
IStorage* StorageI; // current IStorage instance, 0 if not open
IStorage* OrgStorageI; // original IStorage
ILockBytes* LockBytes; // ILockBytes used, if any
private:
bool CanRelease; // can we release the IStorage?
private:
int OpenCount;
void DetachStream(TStream& strm); // override TDocument virtual
DECLARE_STREAMABLE(_OWLCLASS, TStorageDocument,1);
friend class _OWLCLASS_RTL TStorageInStream;
friend class _OWLCLASS_RTL TStorageOutStream;
};
#endif // OWL_STGDOC_H