151 lines
3.4 KiB
C++
151 lines
3.4 KiB
C++
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// 读写文件Dlg.cpp: 实现文件
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//
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#include "pch.h"
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#include "framework.h"
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#include "读写文件.h"
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#include "读写文件Dlg.h"
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#include "afxdialogex.h"
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#endif
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// C读写文件Dlg 对话框
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C读写文件Dlg::C读写文件Dlg(CWnd* pParent /*=nullptr*/)
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: CDialogEx(IDD_MY_DIALOG, pParent)
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{
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m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
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}
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void C读写文件Dlg::DoDataExchange(CDataExchange* pDX)
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{
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CDialogEx::DoDataExchange(pDX);
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}
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BEGIN_MESSAGE_MAP(C读写文件Dlg, CDialogEx)
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ON_WM_PAINT()
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ON_WM_QUERYDRAGICON()
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ON_BN_CLICKED(IDC_BUTTON1, &C读写文件Dlg::OnBnClickedButton1)
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ON_BN_CLICKED(IDC_BUTTON2, &C读写文件Dlg::OnBnClickedButton2)
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END_MESSAGE_MAP()
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// C读写文件Dlg 消息处理程序
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BOOL C读写文件Dlg::OnInitDialog()
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{
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CDialogEx::OnInitDialog();
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// 设置此对话框的图标。 当应用程序主窗口不是对话框时，框架将自动
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// 执行此操作
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SetIcon(m_hIcon, TRUE); // 设置大图标
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SetIcon(m_hIcon, FALSE); // 设置小图标
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// TODO: 在此添加额外的初始化代码
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return TRUE; // 除非将焦点设置到控件，否则返回 TRUE
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}
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// 如果向对话框添加最小化按钮，则需要下面的代码
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// 来绘制该图标。 对于使用文档/视图模型的 MFC 应用程序，
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// 这将由框架自动完成。
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void C读写文件Dlg::OnPaint()
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{
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if (IsIconic())
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{
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CPaintDC dc(this); // 用于绘制的设备上下文
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SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
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// 使图标在工作区矩形中居中
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int cxIcon = GetSystemMetrics(SM_CXICON);
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int cyIcon = GetSystemMetrics(SM_CYICON);
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CRect rect;
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GetClientRect(&rect);
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int x = (rect.Width() - cxIcon + 1) / 2;
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int y = (rect.Height() - cyIcon + 1) / 2;
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// 绘制图标
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dc.DrawIcon(x, y, m_hIcon);
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}
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else
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{
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CDialogEx::OnPaint();
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}
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}
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//当用户拖动最小化窗口时系统调用此函数取得光标
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//显示。
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HCURSOR C读写文件Dlg::OnQueryDragIcon()
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{
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return static_cast<HCURSOR>(m_hIcon);
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}
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void C读写文件Dlg::OnBnClickedButton1()
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{
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// TODO: 在此添加控件通知处理程序代码
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TCHAR szFilter[] = _T("文本文件(*.txt)|*.txt|所有文件(*.*)|*.*||");
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// 构造打开文件对话框
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CFileDialog fileDlg(TRUE, _T("txt"), NULL, 0, szFilter, this);
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CString strFilePath;
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// 显示打开文件对话框
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if (IDOK == fileDlg.DoModal())
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{
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// 如果点击了文件对话框上的“打开”按钮，则将选择的文件路径显示到编辑框里
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strFilePath = fileDlg.GetPathName();
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SetDlgItemText(IDC_EDIT1, strFilePath);
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CFile file;
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if (file.Open(strFilePath, CFile::modeRead))
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{
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char* buf = new char[file.GetLength() + 1];
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buf[file.GetLength()] = '\0';
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file.Read(buf, file.GetLength());
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file.Close();
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CString str;
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str = buf;
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delete[]buf;
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SetDlgItemText(IDC_EDIT2, str);
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}
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else
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{
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MessageBox(_T("文件打开失败"));
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}
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}
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else
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{
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MessageBox(_T("用户取消选择文件"));
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}
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}
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void C读写文件Dlg::OnBnClickedButton2()
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{
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// TODO: 在此添加控件通知处理程序代码
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CString strFilePath;
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CStringA str;
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GetDlgItemText(IDC_EDIT2, strFilePath);
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str = strFilePath;
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GetDlgItemText(IDC_EDIT1, strFilePath);
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CFile file;
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if (file.Open(strFilePath, CFile::modeReadWrite))
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{
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file.Write(str, str.GetLength());
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file.Close();
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MessageBox(_T("文件保存成功"));
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}
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else
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{
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MessageBox(_T("文件打开失败"));
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}
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}
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