comdlg.h:
class CComDlg : public CDialog
{
// Construction
public:
DWORD ReadComm(char *buf, DWORD dwLength);
static UINT CommWriteProc(LPVOID pparam);
int SendFile(void);
BOOL ConfigConnect();
static HANDLE h_com;
CComDlg(CWnd* pParent = NULL); // standard constructor
//串口部分
CWinThread *m_pThread; //辅助线程
volatile BOOL m_bConnected; //串口连接标志
volatile HANDLE m_hPostMsgEvent; // 用于WM_COMMNOTIFY消息的事件对象
static OVERLAPPED m_osRead, m_osWrite; // 用于重叠读/写
// Dialog Data
//{{AFX_DATA(CComDlg)
enum { IDD = IDD_COM_DIALOG };
CEdit m_receive;
CComboBox m_bord;
CComboBox m_port;
static CString m_send;
// CButton *m_cramfs;
// CButton *m_jffs2;
// ULONGLONG zdwlength;
// ULONGLONG cdwlength;
// ULONGLONG jdwlength;
CString bstring;
CString zstring;
CString crstring;
CString jstring;
ULONGLONG szboot;
ULONGLONG szzImage;
ULONGLONG szcramfs;
ULONGLONG szjffs2;
//fileinfo sendfileinfo;
//}}AFX_DATA
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CComDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL
// Implementation
protected:
HICON m_hIcon;
// Generated message map functions
//{{AFX_MSG(CComDlg)
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
afx_msg void OnConnect();
afx_msg void OnButtonSendfile();
afx_msg void OnBUTTONSENDzImage();
afx_msg void OnBUTTONSENDcramfs();
afx_msg void OnBUTTONSENDjffs2();
afx_msg void Onsdcommand();
afx_msg void OnBUTTONSENDboot();
//}}AFX_MSG
afx_msg LRESULT OnCommNotify(WPARAM wParam, LPARAM lParam);
DECLARE_MESSAGE_MAP()
};
comdlg.cpp:
CString CComDlg::m_send;
HANDLE CComDlg::h_com;
OVERLAPPED CComDlg::m_osRead;
OVERLAPPED CComDlg::m_osWrite;
void CComDlg::Onsdcommand()
{
UpdateData(true);
AfxBeginThread(CommWriteProc, this);
}
UINT CComDlg::CommWriteProc(LPVOID pparam)
{
COMSTAT ComStat;
ULONG nLength=0;
//CString m_send1;
// m_send1=m_send;
ULONG szLength = m_send.GetLength();
char *sz = new char[szLength];
if(sz==NULL)
return 0;
memcpy(sz,m_send.GetBuffer(szLength),szLength);
DWORD dwErrorFlags;
ClearCommError(h_com,&dwErrorFlags,&ComStat);//清除串口错误*/
BOOL fState=WriteFile(h_com,sz,szLength,&nLength,&m_osWrite);//数据发送
if(!fState)
{
ULONG my_error=GetLastError();
if(my_error==ERROR_IO_PENDING)//重叠I/O操作未完成
{
GetOverlappedResult(h_com,&m_osWrite,&nLength,TRUE);//调用GetOverlappedResult函数等待，如果指定该函数的bWait参数为TRUE，那么该函数将等待OVERLAPPED结构的hEvent
}
else
nLength=0;
}
delete[] sz;
sz=NULL;
return 0;
}
太长了，就贴这一部分吧
主要就是启动一个线程，这个线程要访问一个类的成员变量，我就把它作为这个类的成员
函数，AFXBEGINTHREAD要求它必须是静态的，所以它访问的类的成员变量我也都把它改
成静态的了
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计算机技术与应用 → 『 C/C++编程思想 』 → 请问cannot open Debug/com.exe for writing？
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2006/4/19 9:56:00
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请问cannot open Debug/com.exe for writing？
