multibrowserview.cpp

主要介绍vc++6.0的编程过程

// MultiBrowserView.cpp : implementation of the
// CMultiBrowserView class
//

#include "stdafx.h"
#include "MultiBrowser.h"

#include "MultiBrowserDoc.h"
#include "MultiBrowserView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

static int nCounter = 0;
static CMultiBrowserView *pView[4] =
	{ NULL, NULL, NULL, NULL };

/////////////////////////////////////////////////////////////////////////////
// CMultiBrowserView

IMPLEMENT_DYNCREATE(CMultiBrowserView, CHtmlView)

BEGIN_MESSAGE_MAP(CMultiBrowserView, CHtmlView)
	//{{AFX_MSG_MAP(CMultiBrowserView)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMultiBrowserView construction/destruction

CMultiBrowserView::CMultiBrowserView()
{

	m_nMyCount = nCounter;
	m_nLastUpdated = 1;
	m_bInitialUpdate = TRUE;

	if( nCounter < 4 )
		pView[nCounter++] = this;

}

CMultiBrowserView::~CMultiBrowserView()
{
}

BOOL CMultiBrowserView::PreCreateWindow(CREATESTRUCT& cs)
{
	return CHtmlView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMultiBrowserView drawing

void CMultiBrowserView::OnDraw(CDC* pDC)
{
	CMultiBrowserDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
}

void CMultiBrowserView::OnInitialUpdate()
{
	CHtmlView::OnInitialUpdate();

	// We'll only go the the search
	// engine if this is the first view window.
	if( m_nMyCount == 0 )
		Navigate2(_T("http://www.excite.com/"),
			NULL,NULL);

}

/////////////////////////////////////////////////////////////////////////////
// CMultiBrowserView diagnostics

#ifdef _DEBUG
void CMultiBrowserView::AssertValid() const
{
	CHtmlView::AssertValid();
}

void CMultiBrowserView::Dump(CDumpContext& dc) const
{
	CHtmlView::Dump(dc);
}

CMultiBrowserDoc* CMultiBrowserView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMultiBrowserDoc)));
	return (CMultiBrowserDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMultiBrowserView message handlers

void CMultiBrowserView::OnBeforeNavigate2(
	LPCTSTR lpszURL,
	DWORD nFlags, LPCTSTR lpszTargetFrameName,
	CByteArray& baPostedData, LPCTSTR lpszHeaders,
	BOOL* pbCancel )
{

	// Skip this is this is the initial update.
	// Make sure we only do this code if this
	// is the first view window. Also, make sure
	// the URL doesn't have a '?' character. The
	// '?' indicates a parameter and shows that
	// the user is navigating the search engine.
	if( !m_bInitialUpdate &&
		m_nMyCount == 0 &&
		strstr( lpszURL, "?" ) == NULL ){

		// If the view class pointer isn't NULL,
		// make it navigate to the URL.
		if( pView[m_nLastUpdated] != NULL )
			pView[m_nLastUpdated]->Navigate2( lpszURL );

		// Increment our counter index so that we'll
		// update the remaining three windows in
		// sequential order.
		m_nLastUpdated++;
		if( m_nLastUpdated > 3 )
			m_nLastUpdated = 1;

		// Cancel the navigation of the
		// search window.
		*pbCancel = TRUE;

		}

	// Set our flag so we know this isn't the
	// initial update.
	m_bInitialUpdate = FALSE;

}