Read a compound document

[Polo]

Hi,

We developped an application that save files as a compound document.

Now we developp a new version in net and we would like to import old file
format. What is the best way. A sample or a link is welcome

Thank's in advance

Polo

[Ignacio Machin \( .NET/ C# MVP \)]

HI,

I think that depends of the document itself, in .net you can read a binary
file so in principle you can recreate the same structure. it's up the app to
interprete the bytes properly though.

How was the document created?

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Polo" <[e-mail]> wrote in message
news:43**********************@news.skynet.be...

Hi,

We developped an application that save files as a compound document.

Now we developp a new version in net and we would like to import old file
format. What is the best way. A sample or a link is welcome

Thank's in advance

Polo

[Polo]

Hi,

The partail code below is used to generate the compound file

STDMETHODIMP CProject::SaveCompound(BSTR FileName)
{
CComPtr<IStorage> pRootStorage;
if (StgIsStorageFile(FileName) == S_OK)
{
_RTVH(StgOpenStorage(FileName, NULL, STGM_DIRECT | STGM_READWRITE |
STGM_SHARE_EXCLUSIVE, NULL, 0, &pRootStorage));
}
else
{
_RTVH(StgCreateDocfile(FileName, STGM_DIRECT | STGM_READWRITE |
STGM_CREATE | STGM_SHARE_EXCLUSIVE, 0, &pRootStorage));
}
CComPtr<IPersistStorage> pPersistStorage;
_RTVH(QueryInterface(IID_IPersistStorage,
reinterpret_cast<void**>(&pPersistStorage)));
_RTVH(pPersistStorage->Save(pRootStorage, FALSE));
return S_OK;
}

HRESULT CProject::Save(IStorage* pStorage, BOOL fSameAsLoad)
{
CComPtr<IStorage> pProjectStorage;
_RTVH(pStorage->CreateStorage(OLESTR("IProject"), STGM_DIRECT |
STGM_READWRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE, 0,0,
&pProjectStorage));
CComPtr<IStream> pStream;
_RTVH(pProjectStorage->CreateStream(OLESTR("Contents"), STGM_DIRECT |
STGM_READWRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE, 0,0, &pStream));
CComPtr<IPersistStreamInit> pPersistStreamInit;
_RTVH(QueryInterface(IID_IPersistStreamInit,
reinterpret_cast<void**>(&pPersistStreamInit)));
_RTVH(pPersistStreamInit->Save(pStream, FALSE));
return S_OK;
}
HRESULT CProject::Save(LPSTREAM pStm, BOOL fClearDirty)
{
ULONG lWrite;
_RTVH(m_bstrVersion.WriteToStream(pStm));
_RTVH(m_bstrDescription.WriteToStream(pStm));
_RTVH(m_bstrShortDescription.WriteToStream(pStm));
_RTVH(m_bstrOwner.WriteToStream(pStm));
_RTVH(pStm->Write((void*)&m_eInterpolationMethod,
sizeof(m_eInterpolationMethod), &lWrite));
_RTVF(lWrite != sizeof(m_eInterpolationMethod));
....
}
"Ignacio Machin ( .NET/ C# MVP )" <ignacio.machin AT dot.state.fl.us> a
écrit dans le message de news:On*************@tk2msftngp13.phx.gbl...

HI,

I think that depends of the document itself, in .net you can read a binary file so in principle you can recreate the same structure. it's up the app to interprete the bytes properly though.

How was the document created?

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Polo" <[e-mail]> wrote in message
news:43**********************@news.skynet.be...

Hi,

We developped an application that save files as a compound document.

Now we developp a new version in net and we would like to import old file format. What is the best way. A sample or a link is welcome

Thank's in advance

Polo

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,
You will have to reverse engineer it, if you have the source code you can
follow it and see how it saves the pieces, you will have to duplicate it in
..NET , most probably you will have to recreate the same struct currently
being used.

I cant think of another solution less cumbersome :(

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation


"Polo" <[e-mail]> wrote in message
news:43***********************@news.skynet.be...

Hi,

The partail code below is used to generate the compound file

STDMETHODIMP CProject::SaveCompound(BSTR FileName)
{
CComPtr<IStorage> pRootStorage;
if (StgIsStorageFile(FileName) == S_OK)
{
_RTVH(StgOpenStorage(FileName, NULL, STGM_DIRECT | STGM_READWRITE |
STGM_SHARE_EXCLUSIVE, NULL, 0, &pRootStorage));
}
else
{
_RTVH(StgCreateDocfile(FileName, STGM_DIRECT | STGM_READWRITE |
STGM_CREATE | STGM_SHARE_EXCLUSIVE, 0, &pRootStorage));
}
CComPtr<IPersistStorage> pPersistStorage;
_RTVH(QueryInterface(IID_IPersistStorage,
reinterpret_cast<void**>(&pPersistStorage)));
_RTVH(pPersistStorage->Save(pRootStorage, FALSE));
return S_OK;
}

HRESULT CProject::Save(IStorage* pStorage, BOOL fSameAsLoad)
{
CComPtr<IStorage> pProjectStorage;
_RTVH(pStorage->CreateStorage(OLESTR("IProject"), STGM_DIRECT |
STGM_READWRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE, 0,0,
&pProjectStorage));
CComPtr<IStream> pStream;
_RTVH(pProjectStorage->CreateStream(OLESTR("Contents"), STGM_DIRECT |
STGM_READWRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE, 0,0, &pStream));
CComPtr<IPersistStreamInit> pPersistStreamInit;
_RTVH(QueryInterface(IID_IPersistStreamInit,
reinterpret_cast<void**>(&pPersistStreamInit)));
_RTVH(pPersistStreamInit->Save(pStream, FALSE));
return S_OK;
}
HRESULT CProject::Save(LPSTREAM pStm, BOOL fClearDirty)
{
ULONG lWrite;
_RTVH(m_bstrVersion.WriteToStream(pStm));
_RTVH(m_bstrDescription.WriteToStream(pStm));
_RTVH(m_bstrShortDescription.WriteToStream(pStm));
_RTVH(m_bstrOwner.WriteToStream(pStm));
_RTVH(pStm->Write((void*)&m_eInterpolationMethod,
sizeof(m_eInterpolationMethod), &lWrite));
_RTVF(lWrite != sizeof(m_eInterpolationMethod));
....
}
"Ignacio Machin ( .NET/ C# MVP )" <ignacio.machin AT dot.state.fl.us> a
écrit dans le message de news:On*************@tk2msftngp13.phx.gbl...

HI,

I think that depends of the document itself, in .net you can read a

binary

file so in principle you can recreate the same structure. it's up the app

to

interprete the bytes properly though.

How was the document created?

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"Polo" <[e-mail]> wrote in message
news:43**********************@news.skynet.be...

> Hi,
>
> We developped an application that save files as a compound document.
>
> Now we developp a new version in net and we would like to import old file > format. What is the best way. A sample or a link is welcome
>
> Thank's in advance
>
> Polo
>
>