chatdlg.cpp

基于对话框的串口通信

// ChatDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Chat.h"
#include "ChatDlg.h"
static DWORD WINAPI RecvProc(LPVOID lpParameter);

#ifdef _DEBUG
#define new DEBUG_NEW

#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CChatDlg dialog


CChatDlg::CChatDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CChatDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CChatDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}


void CChatDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CChatDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}
 DWORD WINAPI CChatDlg::RecvProc(LPVOID lpParameter)
{
SOCKET sock=((RECVPARAM*)lpParameter)->sock;
HWND hwnd=((RECVPARAM*)lpParameter)->hwnd;
delete lpParameter;
SOCKADDR_IN addrFrom;
int len=sizeof(SOCKADDR);
 char recvBuf[200];
char tempBuf[300];
int retval;
while(TRUE)
{
retval=recvfrom(sock,recvBuf,200,0,(SOCKADDR*)&addrFrom,&len);
if(SOCKET_ERROR==retval)
break;
sprintf(tempBuf,"%s say:%s",inet_ntoa(addrFrom.sin_addr),recvBuf);
::PostMessage(hwnd,WM_RECVDATA,0,(LPARAM)tempBuf);
}
return 0;
}

void CChatDlg::OnRecvDATA(WPARAM wParam,LPARAM lParam)
{
CString str=(char*)lParam;
CString strTemp;
GetDlgItemText(IDC_EDIT_RECV,strTemp);
str+="\r\n";
str+=strTemp;
SetDlgItemText(IDC_EDIT_RECV,str);
}

void CChatDlg::OnBtnSend()
{
DWORD dwIP;
((CIPAddressCtrl*)GetDlgItem(IDC_IPADDRESS1))->GetAddress(dwIP);
SOCKADDR_IN addrTo;
addrTo.sin_family=AF_INET;
addrTo.sin_port=htons(6000);
addrTo.sin_addr.S_un.S_addr=htonl(dwIP);
CString strSend;
GetDlgItemText(IDC_EDIT_SEND,strSend);
sendto(m_socket,strSend,strSend.GetLength()+1,0, (SOCKADDR*)&addrTo,sizeof(SOCKADDR));
 SetDlgItemText(IDC_EDIT_SEND," ");
}



BEGIN_MESSAGE_MAP(CChatDlg, CDialog)
	//{{AFX_MSG_MAP(CChatDlg)
	ON_BN_CLICKED(IDC_BTN_SEND, OnBtnSend)
	//}}AFX_MSG_MAP

ON_MESSAGE(WM_RECVDATA,OnRecvDATA)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CChatDlg message handlers

BOOL CChatDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	InitSocket();

RECVPARAM *pRecvParam=new RECVPARAM;
pRecvParam->sock=m_socket;
pRecvParam->hwnd=m_hWnd;
HANDLE hThread=CreateThread(NULL,0,RecvProc,(LPVOID)pRecvParam,0,NULL);
CloseHandle(hThread);

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}