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Customized Visual Studio .NET package: your fully integrated document window inside the IDE

, 20 Dec 2003
Create a fully integrated document window inside the Visual Studio IDE.
#include "StdAfx.h"
#include "Docdata.h"
#include "DocView.h"

#include "Mediator.h"
#include "Histogram.h"
#include "FileInfo.h"
#include "CommandIDs.h"


static const GUID IID_IVsPersistDocData = {0xD5D49C61,0x1C0B,0x4EA1,0x9A,0xDB,0xA7,0x9F,0xB1,0xDB,0xC7,0xB5};
static const GUID IID_IPersistFileFormat = {0x3AFAE242,0xB530,0x11D0,0x81,0x99,0x00,0xA0,0xC9,0x1B,0xBE,0xE3};


CDocumentData::CDocumentData()
{
	m_uRefCnt = 0;
	m_pHist = NULL;
	m_pInfo = NULL;
	m_dwCmdState = 0;
	m_pMdtr = NULL;
	m_szFileName = NULL;
}

CDocumentData::~CDocumentData()
{
	if ( m_pMdtr )
	{
		m_pMdtr->SetData( NULL );
	}
	if ( m_pHist )
	{
		delete m_pHist;
	}
	if ( m_pInfo )
	{
		delete m_pInfo;
	}
	CDbg::Trace( " CDocumentData:: destructor\n" );
}

void CDocumentData::Attach( CMediator* pMdtr )
{
	if ( m_pMdtr )
	{
		m_pMdtr->SetData( NULL );
	}
	m_pMdtr = pMdtr;
	m_pMdtr->SetData( this );
}

//**************************************************************************
//	IUnknown
//**************************************************************************

STDMETHODIMP CDocumentData::QueryInterface( REFIID rid, void** ppvObject )
{
	if ( (rid == IID_IUnknown)||(rid == IID_IVsPersistDocData) )
	{
		*ppvObject = (IVsPersistDocData*)this;
		AddRef();
		return S_OK;
	}
	if ( rid == IID_IPersistFileFormat )
	{
		*ppvObject = (IPersistFileFormat*)this;
		AddRef();
		CDbg::Trace("       DocData::QI: IPersistFileFormat\n" );
		return S_OK;
	}
	if ( rid == IID_IDispatch )
	{
		CDbg::Trace("       DocData::QI: IDispatch ####\n" );
		//*ppvObject = (IDispatch*)this;
		//return S_OK;
	}
	*ppvObject = NULL;
	return E_NOTIMPL;
}

STDMETHODIMP_(ULONG) CDocumentData::AddRef()
{
	++m_uRefCnt;
	return m_uRefCnt;
}

STDMETHODIMP_(ULONG) CDocumentData::Release()
{
	m_uRefCnt --;
	if ( m_uRefCnt == 0 )
	{
		delete this;
		return 0;
	}
	return m_uRefCnt;
}

//**************************************************************************
//	IVsPersistDocData
//**************************************************************************

STDMETHODIMP CDocumentData::PD_Stub3( void* p1 )
{
	CDbg::Trace( "       IVsPersistDocData::Stub3 = S_OK\n" );
	return S_OK;
}

STDMETHODIMP CDocumentData::PD_Stub4( BOOL* pbDocChanged )
{
	if ( m_pHist && m_pInfo )
	{
		*pbDocChanged = (m_pHist->IsNotSaved() | m_pInfo->IsNotSaved());
	}
	return S_OK;
}

STDMETHODIMP CDocumentData::PD_Stub5( void* p1 )
{
	CDbg::Trace( "       IVsPersistDocData::Stub5 = S_NOTIMPL\n" );
	return E_NOTIMPL;
}

STDMETHODIMP CDocumentData::PD_LoadDocData( LPCOLESTR wszFileName )
{
	CDbg::Trace( "       IVsPersistDocData::PD_LoadDocData=S_OK\n" );

#ifndef _BASIC_WINDOW_
	HANDLE hFile = CreateFileW( wszFileName, GENERIC_READ, FILE_SHARE_READ,
							NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL );
	
	if ( hFile == INVALID_HANDLE_VALUE )
	{
		return E_FAIL;
	}

	BYTE* pucBuff = new BYTE[1028];
	if ( pucBuff == NULL )
	{
		CloseHandle( hFile );
		return E_FAIL;
	}
	m_pHist = new CHistogram();
	m_pHist->Init( 30, 30, 400, 200 );
	m_pInfo = new CFileInfo();
	m_pInfo->Init( 30, 230, 330, 200 );
	DWORD dwRead = 0;
	DWORD dwTotalRead = 0;

	while( ReadFile( hFile, pucBuff, 1028, &dwRead, NULL ) )
	{
		if ( dwRead == 0 )
		{
			break;
		}
		dwTotalRead += dwRead;
		m_pHist->AddData( pucBuff, dwRead );
	}
	if ( dwTotalRead == 0 )
	{
		delete m_pInfo;
		delete m_pHist;
		delete pucBuff;
		m_pHist = NULL;
		m_pInfo = NULL;
		CloseHandle( hFile );
		return E_FAIL;
	}
	else
	{
		m_pInfo->SetLength( int(dwTotalRead) );
		m_pInfo->SetName( wszFileName );
		m_pInfo->SetSignature( L"File content quantized histogram." );
		m_pInfo->SetSaved();
		m_pHist->SetSaved();
	}
	delete pucBuff;
	m_dwCmdState = (m_pHist->GetCmdState() | m_pInfo->GetCmdState());
	
	if ( m_pMdtr )
	{
		m_pMdtr->AddGraphicObject( m_pHist );
		m_pMdtr->AddGraphicObject( m_pInfo );
	}
#endif //_BASIC_WINDOW_

	return S_OK;
}

STDMETHODIMP CDocumentData::PD_SaveDocData( DWORD dwFlg, LPWSTR* pbstr, BOOL *pbCn )
{
	CDbg::Trace( "       IVsPersistDocData::SaveDocData( Flg=%x, [out]pbstr=%S (0x%p), [out]*pb=%d )\n",
					dwFlg, *pbstr, pbstr, *pbCn );

	if ( m_pHist && m_pInfo )
	{
		m_pHist->SetSaved();
		m_pInfo->SetSaved();
	}
	return S_OK;
}

STDMETHODIMP CDocumentData::PD_Stub8( )
{
	CDbg::Trace( "       IVsPersistDocData::Stub8( ) = S_OK\n" );
	return S_OK;
}

STDMETHODIMP CDocumentData::PD_Stub9( void* p1, void* p2, void* p3 )
{
	CDbg::Trace( "       IVsPersistDocData::Stub9( ) = S_OK\n" );
	return S_OK;
}


STDMETHODIMP CDocumentData::PD_Stub10( void* p1, void* p2, void* p3, void* p4 )
{
	CDbg::Trace( "       IVsPersistDocData::Stub10( ) = S_OK\n" );
	return S_OK;
}

STDMETHODIMP CDocumentData::PD_SetDocChanged( BOOL* pChanged )
{
	CDbg::Trace( "       IVsPersistDocData::SetChanged( ) = S_OK\n" );
	//*pChanged = TRUE;
	return S_OK;
}

STDMETHODIMP CDocumentData::PD_Stub12( void* p1 )
{
	CDbg::Trace( "       IVsPersistDocData::Stub12( p1=0x%p ) = S_OK\n", p1 );
	return S_OK;
}

//**************************************************************************
//	IPersistFileFormat
//**************************************************************************

STDMETHODIMP CDocumentData::PF_Stub3( void* p1 )
{
	CDbg::Trace( "       IPersistFileFormat::Stub3() = E_NOTIMPL\n" );
	return E_NOTIMPL;
}

STDMETHODIMP CDocumentData::PF_Stub4( void* p1 )
{
	CDbg::Trace( "       IPersistFileFormat::Stub4() = E_NOTIMPL\n" );
	return E_NOTIMPL;
}

STDMETHODIMP CDocumentData::PF_Stub5( void* p1 )
{
	CDbg::Trace( "       IPersistFileFormat::Stub5() = E_NOTIMPL\n" );
	return E_NOTIMPL;
}

STDMETHODIMP CDocumentData::PF_Stub6( void* p1, void* p2, void* p3 )
{
	CDbg::Trace( "       IPersistFileFormat::Stub6() = E_NOTIMPL\n" );
	return E_NOTIMPL;
}

STDMETHODIMP CDocumentData::PF_Save( LPCWSTR szFName, BOOL bRem, DWORD nFormIndx )
{
	CDbg::Trace( "       IPersistFileFormat::Save()\n" );
	return S_OK;
}

STDMETHODIMP CDocumentData::PF_Stub8( void* p1 )
{
	CDbg::Trace( "       IPersistFileFormat::Stub8() = S_OK\n" );
	return S_OK;
}

STDMETHODIMP CDocumentData::PF_Stub9( LPCWSTR* p1, LPCWSTR* p2 )
{
	CDbg::Trace( "       IPersistFileFormat::Stub9()\n" );
	//1st time set p2, second p1 to file path+name.
	return S_OK;
}

STDMETHODIMP CDocumentData::PF_Stub10( LPCWSTR* pszSaveFormat )
{
	CDbg::Trace( "       IPersistFileFormat::Stub10( )\n" );
	*pszSaveFormat=L"Misha Files (*.*)\r*.*";
	return S_OK;
}

HRESULT CDocumentData::ExecCommand(ULONG uCmdID )
{
	if ( m_pMdtr && m_pHist && m_pInfo )
	{
		switch( uCmdID )
		{
		case COMMAND_ID_CUT:
		case COMMAND_ID_COPY:
		case COMMAND_ID_PASTE:
		case COMMAND_ID_UNDO:
		case COMMAND_ID_REDO:
		case COMMAND_ID_DELETE:
			break;
		case COMMAND_ID_SAVE:
		case COMMAND_ID_SAVEALL:
			{
				void* pTmp = NULL; 
				return PD_SaveDocData( 0, (LPWSTR*)&pTmp, (BOOL*)&pTmp );
			}
		default:
			CDbg::Trace( "Doc::Exec unexpected command = 0x%X\n", uCmdID );
		};
		m_pHist->UserAction( ~uCmdID, NULL );
		m_pInfo->UserAction( ~uCmdID, NULL );
		m_pMdtr->UpdateView();
		m_dwCmdState = (m_pHist->GetCmdState() | m_pInfo->GetCmdState() );
		return S_OK;
	}
	return OLECMDERR_E_DISABLED;
}

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About the Author

Michael Sheinin
Web Developer
United States United States
For the last 7 years I have developed software in real-time/embedded and MS-Windows environments for military and civil markets. I hold B.Sc. degree in computer engineering. Living in Ontario, Canada, I like hiking and traveling in general. Currently, I'm looking for employment opportunity inside the GTA.

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