userregdlg.cpp

《Visual C++案例开发》源代码 用户信息管理小例程

// UserRegDlg.cpp : implementation file
//

#include "stdafx.h"
#include "UserReg.h"
#include "UserRegDlg.h"
#include "UserInforRst.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()

/////////////////////////////////////////////////////////////////////////////
// CUserRegDlg dialog

CUserRegDlg::CUserRegDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUserRegDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUserRegDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CUserRegDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUserRegDlg)
	DDX_Control(pDX, IDC_LIST_MAIN, m_main);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUserRegDlg, CDialog)
	//{{AFX_MSG_MAP(CUserRegDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTN_ADD, OnBtnAdd)
	ON_BN_CLICKED(IDC_BTN_MOD, OnBtnMod)
	ON_BN_CLICKED(IDC_BTN_DEL, OnBtnDel)
	ON_BN_CLICKED(IDC_BTN_EXIT, OnBtnExit)
	ON_NOTIFY(HDN_ITEMCHANGED, IDC_LIST_MAIN, OnItemchangedListMain)
	ON_NOTIFY(NM_CLICK, IDC_LIST_MAIN, OnClickListMain)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUserRegDlg message handlers

BOOL CUserRegDlg::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
	
	m_main.InsertColumn(0,"用户编码",LVCFMT_LEFT,120);
	m_main.InsertColumn(1,"用户名称",LVCFMT_LEFT,200);
	m_main.InsertColumn(2,"用户描述",LVCFMT_LEFT,300);
	
	m_main.ModifyStyle(0, LVS_REPORT | LVS_SHOWSELALWAYS | LVS_SINGLESEL);
	m_main.SetExtendedStyle(LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES | LVS_EX_HEADERDRAGDROP);

	CUserInforRst m_info;
	try{
		if(m_info.IsOpen())
			m_info.Close();

		m_info.Open();
		
		while(!m_info.IsEOF()){
			CString str = "";
			str.Format("%d",m_info.m_UserCode);
			int nItem =m_main.InsertItem(0,str);
			m_main.SetItemText(nItem, 1,m_info.m_UserName);
			m_main.SetItemText(nItem, 2,m_info.m_UserDesc);
			m_info.MoveNext();		
		}

		m_info.Close();
	}
	catch(...){
		m_info.Close();
	}
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CUserRegDlg::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 CUserRegDlg::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 CUserRegDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CUserRegDlg::OnBtnAdd() 
{
	CString strUserCode = "";
	CString strUserName = "";
	CString strUserDesc = "";
	
	GetDlgItem(IDC_EDIT_USERCODE)->GetWindowText(strUserCode);
	GetDlgItem(IDC_EDIT_USERNAME)->GetWindowText(strUserName);
	GetDlgItem(IDC_EDIT_USERDESC)->GetWindowText(strUserDesc);

	CUserInforRst m_info;
	int nuserCode = atoi(strUserCode);
	if(nuserCode<=0 || strlen(strUserName)<=0){
		MessageBox("用户编号和用户名称不能为空!");
		return;
	}
	try{
		if(m_info.IsOpen())
			m_info.Close();

		m_info.Open();
		
		m_info.AddNew();

		m_info.m_UserCode = nuserCode;
		m_info.m_UserName = strUserName;
		m_info.m_UserDesc = strUserDesc;

		m_info.Update();

		m_info.Close();
		
		int nItem =m_main.InsertItem(0,strUserCode);
		m_main.SetItemText(nItem, 1,strUserName);
		m_main.SetItemText(nItem, 2,strUserDesc);

		MessageBox("用户信息添加成功!");
	}
	catch(...){
		m_info.Close();
		MessageBox("用户信息添加失败，请确认你输入的用户信息!");
	}
}

void CUserRegDlg::OnBtnMod() 
{
	int nItem = m_main.GetNextItem(-1, LVNI_SELECTED);
	if(nItem<0){
		MessageBox("未选中其中一项，不能进行修改操作!");
		return;
	}

	CString strUserCode = "";
	CString strUserName = "";
	CString strUserDesc = "";
	
	GetDlgItem(IDC_EDIT_USERCODE)->GetWindowText(strUserCode);
	GetDlgItem(IDC_EDIT_USERNAME)->GetWindowText(strUserName);
	GetDlgItem(IDC_EDIT_USERDESC)->GetWindowText(strUserDesc);

	CUserInforRst m_info;
	int nuserCode = atoi(strUserCode);
	if(nuserCode<=0 || strlen(strUserName)<=0){
		MessageBox("用户编号和用户名称不能为空!");
		return;
	}
	try{
		if(m_info.IsOpen())
			m_info.Close();
		
		m_info.m_strFilter.Format("UserCode =%s",m_main.GetItemText(nItem,0));
		m_info.Open();
		
		if(!m_info.IsEOF()){
			m_info.Edit();
			
			m_info.m_UserCode = nuserCode;
			m_info.m_UserName = strUserName;
			m_info.m_UserDesc = strUserDesc;
			
			m_info.Update();
			
			m_main.SetItemText(nItem, 0,strUserCode);
			m_main.SetItemText(nItem, 1,strUserName);
			m_main.SetItemText(nItem, 2,strUserDesc);

			MessageBox("用户信息修改成功!");

		}
		else{
			MessageBox("未找到此编号的用户!");
		}
		m_info.Close();
	}
	catch(...){
		m_info.Close();
		MessageBox("用户信息修改失败，请确认你输入的用户信息!");
	}
	
}

void CUserRegDlg::OnBtnDel() 
{
	int nItem = m_main.GetNextItem(-1, LVNI_SELECTED);
	if(nItem<0){
		MessageBox("未选中其中一项，不能进行删除操作!");
		return;
	}

	CUserInforRst m_info;
	try{
		if(m_info.IsOpen())
			m_info.Close();
		
		m_info.m_strFilter.Format("UserCode =%s",m_main.GetItemText(nItem,0));
		m_info.Open();
		
		if(!m_info.IsEOF()){
			m_info.Delete();
			
			MessageBox("用户信息删除成功!");
		}
		else{
			MessageBox("未找到此编号的用户!");
		}
		m_info.Close();
	}
	catch(...){
		m_info.Close();
		MessageBox("用户信息删除失败!");
	}
}

void CUserRegDlg::OnBtnExit() 
{
	CDialog::OnCancel();
}

void CUserRegDlg::OnItemchangedListMain(NMHDR* pNMHDR, LRESULT* pResult) 
{
	HD_NOTIFY *phdn = (HD_NOTIFY *) pNMHDR;

	*pResult = 0;
}

void CUserRegDlg::OnClickListMain(NMHDR* pNMHDR, LRESULT* pResult) 
{
	int nItem = m_main.GetNextItem(-1, LVNI_SELECTED);

	if(nItem >= 0){
		GetDlgItem(IDC_EDIT_USERCODE)->SetWindowText(m_main.GetItemText(nItem,0));
		GetDlgItem(IDC_EDIT_USERNAME)->SetWindowText(m_main.GetItemText(nItem,1));
		GetDlgItem(IDC_EDIT_USERDESC)->SetWindowText(m_main.GetItemText(nItem,2));
		
	}

	*pResult = 0;
}