recvdlg.cpp

《Windows应用程序捆绑核心编程》配套源码

// RecvDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Recv.h"
#include "RecvDlg.h"

/////////////////////////////////////////////////////////////////////////////
// CRecvDlg dialog

CRecvDlg::CRecvDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CRecvDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CRecvDlg)
	m_strText = _T("");
	//}}AFX_DATA_INIT

	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

CRecvDlg::~CRecvDlg()
{
	// Unmap view of file.
	if(m_hMapObject){
		if (!UnmapViewOfFile(m_pszMapView))
			AfxMessageBox("Unable to unmap view of file");
		
		// Close the shared memory file.
		CloseHandle(m_hMapObject);
	}
}

void CRecvDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRecvDlg)
	DDX_Text(pDX, IDC_DATA_TEXT, m_strText);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CRecvDlg, CDialog)
	//{{AFX_MSG_MAP(CRecvDlg)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRecvDlg message handlers

BOOL CRecvDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
 
	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// Open memory mapped file.
	m_hMapObject=OpenFileMapping(FILE_MAP_READ,FALSE,_TEXT("shared_memory"));
    
	if(!m_hMapObject){
		AfxMessageBox("Can't open shared memory file,please run 'Send' first.");
		SendMessage(WM_CLOSE);
		return FALSE;
	}
	
    // Get pointer to shared data.
	m_pszMapView=(LPSTR)MapViewOfFile
		(m_hMapObject,FILE_MAP_READ, 0, 0,0);

	if(!m_pszMapView){
		AfxMessageBox("Can't map view of shared memory file.");

		return FALSE;
	}

	SetTimer(0x10,900,NULL);
	  
	return TRUE;  // return TRUE  unless you set the focus to a control.
}

void CRecvDlg::OnTimer(UINT nIDEvent) 
{
	m_strText=m_pszMapView;
	UpdateData(FALSE);

	CDialog::OnTimer(nIDEvent);
}