void CGoToFileDlg::OnPaint(){ if (IsIconic()) { CPaintDC dc(this);  SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); 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; dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); }}HCURSOR CGoToFileDlg::OnQueryDragIcon(){ return (HCURSOR) m_hIcon;}void CGoToFileDlg::OnButopen(){ CFileDialog dlg(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT, "All Files(*.TXT)|*.TXT||",AfxGetMainWnd());//構造文件打開對話框 if (dlg.DoModal() == IDOK)//判斷是否按下"打開"按鈕 { m_Path = dlg.GetPathName(); //獲得文件路徑 FILE *pFile = fopen(m_Path,"r+t");//以讀寫形式打開文件 if (pFile)//判斷文件是否被正確打開 {  char pchData[1000] = {0};//定義數據緩沖區  fread(pchData,sizeof(char),1000,pFile); //讀取數據到緩沖區中  fclose(pFile);//關閉文件  m_File = pchData; } UpdateData(FALSE); }}void CGoToFileDlg::OnButinsert(){ UpdateData(); FILE *pFile = fopen(m_Path,"r+t");//以讀寫形式打開文件 if (pFile)//判斷文件是否被正確打開 { fseek(pFile,m_Goto,SEEK_SET);//定位文件 CString str = m_Text + m_File.Right(m_File.GetLength()-m_Goto);//設置字符串 fputs(str.GetBuffer(0),pFile); //向文件中寫入數據 fseek(pFile,0,SEEK_SET);//重新定位文件 char pchData[1000] = {0};//定義數據緩沖區 fread(pchData,sizeof(char),1000,pFile); //讀取數據到緩沖區中 fclose(pFile);//關閉文件 m_File = pchData; UpdateData(FALSE); }}