writeview.cpp

这些源代码

// WriteView.cpp : implementation of the CWriteView class
//

#include "stdafx.h"
#include "Write.h"

#include "WriteDoc.h"
#include "WriteView.h"

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

#define		PIPE_CLOSED		232

/////////////////////////////////////////////////////////////////////////////
// CWriteView

extern HANDLE g_hPipe;
bool	g_bConnected;

IMPLEMENT_DYNCREATE(CWriteView, CEditView)

BEGIN_MESSAGE_MAP(CWriteView, CEditView)
	//{{AFX_MSG_MAP(CWriteView)
	ON_WM_KEYDOWN()
	ON_WM_KEYUP()
	ON_WM_CHAR()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CEditView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CEditView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CEditView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWriteView construction/destruction

CWriteView::CWriteView()
{
	g_bConnected = false;
	AfxBeginThread (WaitForConnect, this);
}

CWriteView::~CWriteView()
{
}

BOOL CWriteView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	BOOL bPreCreated = CEditView::PreCreateWindow(cs);
	cs.style &= ~(ES_AUTOHSCROLL|WS_HSCROLL);	// Enable word-wrapping

	return bPreCreated;
}

/////////////////////////////////////////////////////////////////////////////
// CWriteView drawing

void CWriteView::OnDraw(CDC* pDC)
{
	CWriteDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CWriteView printing

BOOL CWriteView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default CEditView preparation
	return CEditView::OnPreparePrinting(pInfo);
}

void CWriteView::OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo)
{
	// Default CEditView begin printing.
	CEditView::OnBeginPrinting(pDC, pInfo);
}

void CWriteView::OnEndPrinting(CDC* pDC, CPrintInfo* pInfo)
{
	// Default CEditView end printing
	CEditView::OnEndPrinting(pDC, pInfo);
}

/////////////////////////////////////////////////////////////////////////////
// CWriteView diagnostics

#ifdef _DEBUG
void CWriteView::AssertValid() const
{
	CEditView::AssertValid();
}

void CWriteView::Dump(CDumpContext& dc) const
{
	CEditView::Dump(dc);
}

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

/////////////////////////////////////////////////////////////////////////////
// CWriteView message handlers

void CWriteView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	WriteToPipe (WM_KEYDOWN, nChar, nRepCnt, nFlags);
	CEditView::OnKeyDown(nChar, nRepCnt, nFlags);
}

void CWriteView::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	WriteToPipe (WM_KEYUP, nChar, nRepCnt, nFlags);
	CEditView::OnKeyUp(nChar, nRepCnt, nFlags);
}

void CWriteView::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	WriteToPipe (WM_CHAR, nChar, nRepCnt, nFlags);
	CEditView::OnChar(nChar, nRepCnt, nFlags);
}

void CWriteView::OnSysKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	WriteToPipe (WM_SYSKEYDOWN, nChar, nRepCnt, nFlags);
	CEditView::OnSysKeyDown(nChar, nRepCnt, nFlags);
}

void CWriteView::OnSysKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	WriteToPipe (WM_SYSKEYUP, nChar, nRepCnt, nFlags);
	CEditView::OnSysKeyUp(nChar, nRepCnt, nFlags);
}

void CWriteView::OnSysChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	WriteToPipe (WM_SYSCHAR, nChar, nRepCnt, nFlags);
	CEditView::OnSysChar(nChar, nRepCnt, nFlags);
}

void CWriteView::WriteToPipe(UINT message, UINT nChar, UINT nRepCnt, UINT nFlags)
{
	if (!g_bConnected)
		return;
	DWORD dwWritten;
	MSG msg;
	msg.message = message;
	msg.lParam = MAKELONG (nRepCnt, nFlags);
	msg.wParam = nChar;
	msg.time = time (0);
	msg.hwnd = NULL;
	if (!WriteFile (g_hPipe, (char *) &msg, sizeof (MSG), &dwWritten, NULL))
	{
		DWORD dwError = GetLastError ();
		if (dwError == PIPE_CLOSED)
		{
			g_bConnected = false;
			DisconnectNamedPipe (g_hPipe);
			AfxBeginThread (WaitForConnect, this);
		}
	}
}

UINT CWriteView::WaitForConnect(void *lParam)
{
	OVERLAPPED o;
	memset (&o, '\0', sizeof (OVERLAPPED));
	o.hEvent = CreateEvent (NULL, TRUE, FALSE, NULL);
	ConnectNamedPipe (g_hPipe, &o);
	WaitForSingleObject (o.hEvent, INFINITE);
	g_bConnected = true;
	CloseHandle (o.hEvent);
	return (0);
}