【发布时间】：2011-04-27 14:06:18
【问题描述】：
我一直在查看此代码，但无法理解 OnTimer 函数的功能。我对 VC++ 很陌生，所以所有这些对我来说都是新知识。
谁能告诉我什么时候触发 OnTimer 事件？我已将我的代码粘贴在下面以供审核。
（VC++ 新手） （抱歉格式错误）
iSCSIDlg.h：头文件
#define WM_RECVDATA WM_USER+1
class CISCSIDlg : public CDialog
{
public:
bool m_testrand;
bool m_ack;
bool m_testProc;
BOOL m_isConnect;
BOOL InitSocket();
CISCSIDlg(CWnd* pParent = NULL);
static DWORD WINAPI RecvProc(LPVOID lpParameter);
static DWORD WINAPI send_test(LPVOID lpParameter);
protected:
virtual void DoDataExchange(CDataExchange* pDX);
protected:
afx_msg void OnTimer(UINT nIDEvent);
DECLARE_MESSAGE_MAP()
};
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
enum { IDD = IDD_ABOUTBOX };
protected:
virtual void DoDataExchange(CDataExchange* pDX);
protected:
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()
CISCSIDlg::CISCSIDlg(CWnd* pParent)
: CDialog(CISCSIDlg::IDD, pParent)
{
m_srvPort = 0;
m_cmd = -1;
m_param1 = 0;
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CISCSIDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_BTN_CONNECT, m_btnConnect);
DDX_Control(pDX, IDC_BTN_SEND, m_btnSend);
DDX_Text(pDX, IDC_EDIT_PORT, m_srvPort);
DDX_Radio(pDX, IDC_RADIO0, m_cmd);
DDX_Text(pDX, IDC_EDIT1, m_param1);
}
BEGIN_MESSAGE_MAP(CISCSIDlg, CDialog)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BTN_CONNECT, OnBtnConnect)
ON_BN_CLICKED(IDC_BTN_SEND, OnBtnSend)
ON_BN_CLICKED(IDC_RADIO0, OnRadio)
ON_WM_TIMER()
ON_MESSAGE(WM_RECVDATA,OnRecvData)
END_MESSAGE_MAP()
BOOL CISCSIDlg::OnInitDialog()
{
CDialog::OnInitDialog();
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
UpdateData(FALSE);
GetDlgItem(IDC_EDIT1)->ShowWindow(SW_HIDE);
GetDlgItem(IDC_EDIT2)->ShowWindow(SW_HIDE);
return TRUE;
}
void CISCSIDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
void CISCSIDlg::OnPaint()
{
}
HCURSOR CISCSIDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
DWORD WINAPI CISCSIDlg::RecvProc(LPVOID lpParameter)
{
SOCKET sock=((RECVPARAM*)lpParameter)->sock;
HWND hwnd=((RECVPARAM*)lpParameter)->hwnd;
delete lpParameter;
unsigned char recvBuf[1500];
unsigned char tempBuf[1500];
int retval;
while(TRUE)
{
memset(recvBuf,0,sizeof(recvBuf));
retval=recv(sock,(char *)recvBuf,1500,0);
memcpy(tempBuf,recvBuf,1500);
::PostMessage(hwnd,WM_RECVDATA,0,(LPARAM)tempBuf);
}
return 0;
}
void CISCSIDlg::OnRecvData(WPARAM wParam,LPARAM lParam)
{
CTime time=CTime::GetCurrentTime();
if(msg[12]==0)
{
}
else
{
send(m_socket,(char*)tmp_buf,32,0);
}
if(msg[12]==0 && m_testProc)
{
SetDlgItemText(IDC_ERR,temp);
}
else
if(msg[12]==0 && m_testrand)
{
}
else
if(m_testProc || m_testrand)
m_ack=true;
}
void CISCSIDlg::OnBtnConnect()
{
}
void CISCSIDlg::OnBtnSend()
{
send(m_socket,(char*)msg_header,cmdSize+16,0);//kh 2
}
void CISCSIDlg::OnTimer(UINT nIDEvent)
{
if(nIDEvent==1)
{
timeout--;
if(timeout<0)
{
KillTimer(1);
flag_test_ready=0;
AfxMessageBox("xxx");
}
}
if(nIDEvent==2)
{
unsigned char testBuf[100];
int testSize=16;
memset(testBuf,0,sizeof(testBuf));
testBuf[0]=0xa5;
if(m_testrand && m_isConnect )
{
if(m_ack)
{
m_ack=false;
unsigned char msg_header[16+100];
send(m_socket,(char*)msg_header,16+testSize,0);
CString toShow,temp;
CTime time=CTime::GetCurrentTime();
toShow.Format("rand:%2d:%2d:%2d cmd(%2x):--",time.GetHour(),time.GetMinute(),time.GetSecond(),testBuf[0]);
for( i=0;i<testSize+16;i++)
{
temp.Format(" %2x",msg_header[i]);
toShow+=temp;
if(i%8==7)
{
((CListBox*)GetDlgItem(IDC_LIST_MSG))->InsertString(0,toShow);
toShow.Empty();
toShow.Format("rand:%2d:%2d:%2d cmd(%2x):--",time.GetHour(),time.GetMinute(),time.GetSecond(),testBuf[0]);
}
}
if(i%8!=0)
((CListBox*)GetDlgItem(IDC_LIST_MSG))->InsertString(0,toShow);
}
}
}
CDialog::OnTimer(nIDEvent);
}
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标签： visual-c++