?? fileexamdlg.cpp
字號:
// FileExamDlg.cpp : implementation file
//
#include "stdafx.h"
#include "FileExam.h"
#include "FileExamDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CFileExamDlg dialog
CFileExamDlg::CFileExamDlg(CWnd* pParent /*=NULL*/)
: CDialog(CFileExamDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CFileExamDlg)
m_bjmc = _T("");
m_csrq = _T("");
m_xsbh = _T("");
m_xsxm = _T("");
m_xsxb = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CFileExamDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CFileExamDlg)
DDX_Text(pDX, IDC_EDTBJMC, m_bjmc);
DDX_Text(pDX, IDC_EDTCSRQ, m_csrq);
DDX_Text(pDX, IDC_EDTXSBH, m_xsbh);
DDX_Text(pDX, IDC_EDTXSXM, m_xsxm);
DDX_CBString(pDX, IDC_CMBXSXB, m_xsxb);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CFileExamDlg, CDialog)
//{{AFX_MSG_MAP(CFileExamDlg)
ON_BN_CLICKED(IDC_BTNFIRST, OnBtnfirst)
ON_BN_CLICKED(IDC_BTNPRIOR, OnBtnprior)
ON_BN_CLICKED(IDC_BTNNEXT, OnBtnnext)
ON_BN_CLICKED(IDC_BTNLAST, OnBtnlast)
ON_BN_CLICKED(IDC_BTNADD, OnBtnadd)
ON_BN_CLICKED(IDC_BTNEDIT, OnBtnedit)
ON_BN_CLICKED(IDC_BTNCANCEL, OnBtncancel)
ON_BN_CLICKED(IDC_BTNSAVE, OnBtnsave)
ON_BN_CLICKED(IDC_BTNDELETE, OnBtndelete)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CFileExamDlg message handlers
BOOL CFileExamDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// 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
CenterWindow(GetDesktopWindow()); // center to the hpc screen
// TODO: Add extra initialization here
//裝載學生表到m_lstStudent隊列
CFile stuFile;
CStudentData studentData;
DWORD dwRead;
//如果數據文件存在，就讀取
ZeroMemory(&studentData,sizeof(studentData));
if (stuFile.Open(STUDENTFILEPATH,CFile::modeRead))
{
do
{
dwRead = stuFile.Read(&studentData,sizeof(studentData));
if (dwRead != 0 )
{
m_lstStudent.AddTail(studentData);
}
}while(dwRead > 0);
//關閉數據文件
stuFile.Close();
}
else //創建文件
{
if (!stuFile.Open(STUDENTFILEPATH,CFile::modeCreate|CFile::modeWrite))
{
AfxMessageBox(_T("創建數據庫失敗"));
return FALSE;
}
stuFile.Close();
}
//初始化界面顯示
if (m_lstStudent.GetCount() > 0)
{
studentData = m_lstStudent.GetHead();
m_iCurPos = 0;
//初始劃第一條顯示
m_xsbh = studentData.xsbh;
m_xsxm = studentData.xsxm;
m_xsxb = studentData.xb;
m_csrq = studentData.csrq;
m_bjmc = studentData.bjmc;
UpdateData(false);
}
SetControlEnable(FALSE);
//設置指針移動按鈕有效性
SetNavigatorButton(m_iCurPos);
return TRUE; // return TRUE unless you set the focus to a control
}
/*
*函數介紹：設置控件有效性
*入口參數：aValue代表控件的有效性
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::SetControlEnable(bool aValue)
{
/*設置輸入框的有效性*/
((CEdit*)GetDlgItem(IDC_EDTXSBH))->EnableWindow(aValue);
((CEdit*)GetDlgItem(IDC_EDTXSXM))->EnableWindow(aValue);
((CEdit*)GetDlgItem(IDC_CMBXSXB))->EnableWindow(aValue);
((CEdit*)GetDlgItem(IDC_EDTCSRQ))->EnableWindow(aValue);
((CEdit*)GetDlgItem(IDC_EDTBJMC))->EnableWindow(aValue);
/*設置指針移動按鈕的有效性*/
((CButton*)GetDlgItem(IDC_BTNFIRST))->EnableWindow(!aValue);
((CButton*)GetDlgItem(IDC_BTNPRIOR))->EnableWindow(!aValue);
((CButton*)GetDlgItem(IDC_BTNNEXT))->EnableWindow(!aValue);
((CButton*)GetDlgItem(IDC_BTNLAST))->EnableWindow(!aValue);
/*設置操作按鈕的有效性*/
((CButton*)GetDlgItem(IDC_BTNADD))->EnableWindow(!aValue);
((CButton*)GetDlgItem(IDC_BTNEDIT))->EnableWindow(!aValue);
((CButton*)GetDlgItem(IDC_BTNCANCEL))->EnableWindow(aValue);
((CButton*)GetDlgItem(IDC_BTNSAVE))->EnableWindow(aValue);
((CButton*)GetDlgItem(IDC_BTNDELETE))->EnableWindow(!aValue);
}
/*
*函數介紹：設置指針移動按鈕的有效性
*入口參數：aValue代表當前記錄位置
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::SetNavigatorButton(int aValue)
{
//如果學生隊列數據小于2
if (m_lstStudent.GetCount() < 2)
{
((CButton*)GetDlgItem(IDC_BTNFIRST))->EnableWindow(FALSE);
((CButton*)GetDlgItem(IDC_BTNPRIOR))->EnableWindow(FALSE);
((CButton*)GetDlgItem(IDC_BTNNEXT))->EnableWindow(FALSE);
((CButton*)GetDlgItem(IDC_BTNLAST))->EnableWindow(FALSE);
return;
}
//指針移到首部
if (aValue == 0)
{
((CButton*)GetDlgItem(IDC_BTNFIRST))->EnableWindow(FALSE);
((CButton*)GetDlgItem(IDC_BTNPRIOR))->EnableWindow(FALSE);
if (m_lstStudent.GetCount() >=2)
{
((CButton*)GetDlgItem(IDC_BTNNEXT))->EnableWindow(TRUE);
((CButton*)GetDlgItem(IDC_BTNLAST))->EnableWindow(TRUE);
}
}//如果指針移到末尾
else if (aValue == m_lstStudent.GetCount() - 1)
{
((CButton*)GetDlgItem(IDC_BTNNEXT))->EnableWindow(FALSE);
((CButton*)GetDlgItem(IDC_BTNLAST))->EnableWindow(FALSE);
if (m_lstStudent.GetCount() >=2)
{
((CButton*)GetDlgItem(IDC_BTNFIRST))->EnableWindow(TRUE);
((CButton*)GetDlgItem(IDC_BTNPRIOR))->EnableWindow(TRUE);
}
}
else
{
((CButton*)GetDlgItem(IDC_BTNFIRST))->EnableWindow(TRUE);
((CButton*)GetDlgItem(IDC_BTNPRIOR))->EnableWindow(TRUE);
((CButton*)GetDlgItem(IDC_BTNNEXT))->EnableWindow(TRUE);
((CButton*)GetDlgItem(IDC_BTNLAST))->EnableWindow(TRUE);
}
}
/*
*函數介紹：將指針移到首部
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtnfirst()
{
CStudentData studentData = m_lstStudent.GetHead();
m_iCurPos = 0;
//更新顯示
m_xsbh = studentData.xsbh;
m_xsxm = studentData.xsxm;
m_xsxb = studentData.xb;
m_csrq = studentData.csrq;
m_bjmc = studentData.bjmc;
UpdateData(false);
//設置指針移動按鈕有效性
SetNavigatorButton(m_iCurPos);
}
/*
*函數介紹：將指針移向前移動
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtnprior()
{
m_iCurPos--;
POSITION pos = m_lstStudent.FindIndex(m_iCurPos);
CStudentData studentData = m_lstStudent.GetAt(pos);
//更新顯示
m_xsbh = studentData.xsbh;
m_xsxm = studentData.xsxm;
m_xsxb = studentData.xb;
m_csrq = studentData.csrq;
m_bjmc = studentData.bjmc;
UpdateData(false);
//設置指針移動按鈕有效性
SetNavigatorButton(m_iCurPos);
}
/*
*函數介紹：將指針向后移動
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtnnext()
{
m_iCurPos++;
POSITION pos = m_lstStudent.FindIndex(m_iCurPos);
CStudentData studentData = m_lstStudent.GetAt(pos);
//更新顯示
m_xsbh = studentData.xsbh;
m_xsxm = studentData.xsxm;
m_xsxb = studentData.xb;
m_csrq = studentData.csrq;
m_bjmc = studentData.bjmc;
UpdateData(false);
//設置指針移動按鈕有效性
SetNavigatorButton(m_iCurPos);
}
/*
*函數介紹：將指針移到尾部
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtnlast()
{
CStudentData studentData = m_lstStudent.GetTail();
m_iCurPos = m_lstStudent.GetCount() - 1;
//更新顯示
m_xsbh = studentData.xsbh;
m_xsxm = studentData.xsxm;
m_xsxb = studentData.xb;
m_csrq = studentData.csrq;
m_bjmc = studentData.bjmc;
UpdateData(false);
//設置指針移動按鈕有效性
SetNavigatorButton(m_iCurPos);
}
/*
*函數介紹：添加新記錄
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtnadd()
{
m_operID = 0 ; //表示添加操作
m_xsbh = _T("");
m_xsxm = _T("");
m_xsxb = _T("");
m_csrq = _T("");
m_bjmc = _T("");
UpdateData(FALSE);
SetControlEnable(TRUE);
}
/*
*函數介紹：編輯舊記錄
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtnedit()
{
if (m_lstStudent.IsEmpty())
{
AfxMessageBox(_T("沒有可編輯的記錄"));
return;
}
m_operID = 1 ; //表示編輯操作
SetControlEnable(TRUE);
}
/*
*函數介紹：保存修改或添加
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtnsave()
{
CStudentData studentData;
CFile stuFile;
UpdateData(TRUE);
switch (m_operID )
{
case 0 : /*添加操作*/
{
/*將添加的東西寫入文件*/
ZeroMemory(&studentData,sizeof(studentData));
wcscpy(studentData.xsbh,m_xsbh);
wcscpy(studentData.xsxm,m_xsxm);
wcscpy(studentData.xb,m_xsxb);
wcscpy(studentData.csrq,m_csrq);
wcscpy(studentData.bjmc,m_bjmc);
stuFile.Open(STUDENTFILEPATH,CFile::modeRead | CFile::modeWrite);
stuFile.SeekToEnd();
stuFile.Write(&studentData,sizeof(studentData));
stuFile.Close();
//更新內存隊列
m_lstStudent.AddTail(studentData);
SetControlEnable(FALSE);
//設置指針移動按鈕有效性
m_iCurPos = m_lstStudent.GetCount()-1;
SetNavigatorButton(m_iCurPos);
break;
}
case 1: /*編輯操作*/
{
/*將添加的東西寫入文件*/
ZeroMemory(&studentData,sizeof(studentData));
wcscpy(studentData.xsbh,m_xsbh);
wcscpy(studentData.xsxm,m_xsxm);
wcscpy(studentData.xb,m_xsxb);
wcscpy(studentData.csrq,m_csrq);
wcscpy(studentData.bjmc,m_bjmc);
stuFile.Open(STUDENTFILEPATH,CFile::modeRead | CFile::modeWrite);
stuFile.Seek(sizeof(studentData)*(m_iCurPos) ,CFile::begin);
stuFile.Write(&studentData,sizeof(studentData));
stuFile.Close();
//更新內存隊列
m_lstStudent.SetAt(m_lstStudent.FindIndex(m_iCurPos),studentData);
SetControlEnable(FALSE);
//設置指針移動按鈕有效性
SetNavigatorButton(m_iCurPos);
break;
}
}
}
/*
*函數介紹：取消修改或添加
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtncancel()
{
POSITION pos = m_lstStudent.FindIndex(m_iCurPos);
CStudentData studentData = m_lstStudent.GetAt(pos);
//更新顯示
m_xsbh = studentData.xsbh;
m_xsxm = studentData.xsxm;
m_xsxb = studentData.xb;
m_csrq = studentData.csrq;
m_bjmc = studentData.bjmc;
UpdateData(false);
SetControlEnable(FALSE);
//設置指針移動按鈕有效性
SetNavigatorButton(m_iCurPos);
}
/*
*函數介紹：刪除當前記錄
*入口參數：(無)
*出口參數：(無)
*返回值：(無)
*/
void CFileExamDlg::OnBtndelete()
{
if (m_lstStudent.IsEmpty())
{
AfxMessageBox(_T("沒有可刪除的記錄"));
return;
}
//先從隊列中移除
POSITION pos = m_lstStudent.FindIndex(m_iCurPos);
m_lstStudent.RemoveAt(pos);
if (m_iCurPos != 0)
{
m_iCurPos--;
}
//更新界面顯示
if (!m_lstStudent.IsEmpty())
{
pos = m_lstStudent.FindIndex(m_iCurPos);
CStudentData studentData = m_lstStudent.GetAt(pos);
//更新顯示
m_xsbh = studentData.xsbh;
m_xsxm = studentData.xsxm;
m_xsxb = studentData.xb;
m_csrq = studentData.csrq;
m_bjmc = studentData.bjmc;
UpdateData(false);
}
else
{
//更新顯示
m_xsbh = _T("");
m_xsxm = _T("");
m_xsxb = _T("");
m_csrq = _T("");
m_bjmc = _T("");
UpdateData(false);
}
SetControlEnable(FALSE);
//設置指針移動按鈕有效性
SetNavigatorButton(m_iCurPos);
//將文件重寫
CStudentData studentData;
CFile stuFile;
stuFile.Open(STUDENTFILEPATH,CFile::modeCreate | CFile::modeWrite);
pos = m_lstStudent.GetHeadPosition();
for (int i=0;i<m_lstStudent.GetCount();i++)
{
ZeroMemory(&studentData,sizeof(studentData));
studentData = m_lstStudent.GetNext(pos);
stuFile.Write(&studentData,sizeof(studentData));
}
stuFile.Close();
}
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