showerrordlg.cpp

一个错误码查询错误信息的程序

// ShowErrorDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ShowError.h"
#include "ShowErrorDlg.h"


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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CShowErrorDlg dialog

CShowErrorDlg::CShowErrorDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CShowErrorDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CShowErrorDlg)
	m_strErrorInfo = _T("");
	m_nErrorNum = 0;
	m_strErrorInfo2 = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CShowErrorDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CShowErrorDlg)
	DDX_Text(pDX, IDC_STATIC_ERRORINFO, m_strErrorInfo);
	DDX_Text(pDX, IDC_EDIT_ERRORNUM, m_nErrorNum);
	DDV_MinMaxInt(pDX, m_nErrorNum, 0, 19999);
	DDX_Text(pDX, IDC_STATIC_ERRORINFO2, m_strErrorInfo2);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CShowErrorDlg, CDialog)
	//{{AFX_MSG_MAP(CShowErrorDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CShowErrorDlg message handlers

BOOL CShowErrorDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	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);
		}
	}

	// 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
	
	// TODO: Add extra initialization here
	m_nErrorNum=11;
	UpdateData(false);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CShowErrorDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CShowErrorDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CShowErrorDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CShowErrorDlg::OnOK() 
{
	// TODO: Add extra validation here
	UpdateData(TRUE);
	
    HLOCAL hlocal = NULL;   // Buffer that gets the error message string
	HLOCAL hlocal2 = NULL;   // Buffer that gets the error message string
	
	// Get the error code's textual description
    BOOL fOk = FormatMessage(
		FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER, 
		NULL, (DWORD)m_nErrorNum, MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED),
		(PTSTR) &hlocal, 0, NULL);
	BOOL fOk2 = FormatMessage(
		FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER, 
		NULL, (DWORD)m_nErrorNum, MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),
		(PTSTR) &hlocal2, 0, NULL);
	if (!(fOk&&fOk2)) 
	{//不成功则采用其他方式
		// Is it a network-related error?
		HMODULE hDll = LoadLibraryEx(TEXT("netmsg.dll"), NULL, 
            DONT_RESOLVE_DLL_REFERENCES);
		
		if (hDll != NULL)
		{
            FormatMessage(
				FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_FROM_SYSTEM,
				hDll, (DWORD)m_nErrorNum, MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED),
				(PTSTR) &hlocal, 0, NULL);
			FormatMessage(
				FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_FROM_SYSTEM,
				hDll, (DWORD)m_nErrorNum, MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED),
				(PTSTR) &hlocal2, 0, NULL);
            FreeLibrary(hDll);
		}
	}
	if (hlocal != NULL) 
	{
		m_strErrorInfo.Format(LPCTSTR(hlocal));//将内存块转换为字符型
		m_strErrorInfo2.Format(LPCTSTR(hlocal2));
		//SetDlgItemText(NULL, IDC_STATIC_ERRORINFO, (CString) LocalLock(hlocal));
		LocalFree(hlocal);
		LocalFree(hlocal2);
	} 
	else
	{
		//字符串前面的大写字母L，用于告诉编译器该字符串应该作为U n i c o d e字符串来编译。(在此无必要)
		m_strErrorInfo = L"错误没找到!.";
		m_strErrorInfo2 = L"Error number not found.";
	}
	UpdateData(FALSE);
	//if(
	//CDialog::OnOK();
}

BOOL CShowErrorDlg::PreCreateWindow(CREATESTRUCT& cs) 
{
	// TODO: Add your specialized code here and/or call the base class
	
	return CDialog::PreCreateWindow(cs);
}