alogindlg.cpp

基于VB的数据库教材管理系统设计 有源码

// aLoginDlg.cpp : implementation file
//

#include "stdafx.h"
#include "BookManager.h"
#include "aLoginDlg.h"
#include "MainDlg.h"
#include "aLoginSet.h"
#include "ModifyDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CaLoginDlg dialog

CaLoginDlg::CaLoginDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CaLoginDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CaLoginDlg)
	m_str_adminpwsd = _T("");
	m_str_adminid = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON1);
}

void CaLoginDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CaLoginDlg)
	DDX_Control(pDX, IDC_Lok, m_bnt_Lok);
	DDX_Control(pDX, IDC_admin_pwsd, m_ctr_adminpwsd);
	DDX_Control(pDX, IDC_admin_id, m_ctr_adminid);
	DDX_Text(pDX, IDC_admin_pwsd, m_str_adminpwsd);
	DDX_CBString(pDX, IDC_admin_id, m_str_adminid);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CaLoginDlg, CDialog)
	//{{AFX_MSG_MAP(CaLoginDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_Lok, OnLok)
	ON_BN_CLICKED(IDC_Lcancel, OnLcancel)
	ON_BN_CLICKED(IDC_Modify, OnModify)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CaLoginDlg message handlers

BOOL CaLoginDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	CaLoginSet recordset;
	CString strSQL;
	strSQL="select * from adminIM";
	if(!recordset.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL))
	{
	  MessageBox("打开数据库失败！","数据库错误",MB_OK);
	  return FALSE;
	}
	while(!recordset.IsEOF())
	{
	   m_ctr_adminid.AddString(recordset.m_admin_id);
	   recordset.MoveNext();
	}
	recordset.Close();
	m_bnt_Lok.SetFocus();

	// 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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CaLoginDlg::OnLok() 
{
	// TODO: Add your control notification handler code here
    UpdateData(TRUE);
    CBookManagerApp* app=(CBookManagerApp*)AfxGetApp();
	CaLoginSet recordset;
	CString strSQL;
	strSQL.Format("select * from adminIM where admin_id='%s'",m_str_adminid);
	if(m_str_adminid.IsEmpty())
	{
		MessageBox("用户ID为空，请输入你的ID!");
		m_ctr_adminid.SetFocus();
	}
   else if(m_str_adminpwsd.IsEmpty())
	{
	   MessageBox("请输入你的密码！");
	   m_ctr_adminpwsd.SetFocus();
	}
   else
   {

	if(!recordset.Open(AFX_DB_USE_DEFAULT_TYPE,strSQL))
	{
	   MessageBox("打开数据库失败！","数据库错误",MB_OK);
	   return;
	}
	
   else if(recordset.GetRecordCount()==0)
	{
	  recordset.Close();
	  MessageBox("用户ID输入错误，请重新输入！");
	  m_ctr_adminid.SetFocus();
	  m_str_adminid.Empty();
	  m_str_adminpwsd.Empty();
	  
	  UpdateData(FALSE);
	}
	else if(m_str_adminpwsd!=recordset.m_admin_pswd)
	{
		MessageBox("密码输入错误，请重新输入！");
		m_str_adminpwsd.Empty();
		m_ctr_adminpwsd.SetFocus();
		UpdateData(FALSE);
	
	}
	else
	{
	   app->IsPower=recordset.m_is_power;
	   app->admin_id=recordset.m_admin_id;
	   recordset.Close();
       CMainDlg dlg;
	   dlg.DoModal();
	   CDialog::OnOK();
	   
	}
   }
	
}

void CaLoginDlg::OnLcancel() 
{
	// TODO: Add your control notification handler code here
	CDialog::OnCancel();
	
}

void CaLoginDlg::OnModify() 
{
	// TODO: Add your control notification handler code here
	CModifyDlg dlg;
	dlg.DoModal();
	
}

BOOL CaLoginDlg::PreTranslateMessage(MSG* pMsg) 
{
	// TODO: Add your specialized code here and/or call the base class
 /* if(pMsg->message==WM_KEYDOWN)   
  {                   
    switch(pMsg->wParam)   
	{   
      case   VK_RETURN:   
          GetDlgItem(IDC_Lok)->SendMessage(BM_CLICK,0,0); 
      break;	  
	}   
  }*/   
  
  return CDialog::PreTranslateMessage(pMsg);
}