打开一个TXT文件并显示在EDIT控件中

步骤:

1.新建一个基于对话框的工程，名称为ReadFile

2.在界面上添加一个按钮(IDC_BUTTON1)和一个文本编辑(IDC_EDIT1)

IDC_EDIT1的属性:多行、可下拉滚动条.

3.编辑按钮触发事件(void CReadFileDlg::OnButton1())

void CReadFileDlg::OnButton1()

{

　　// TODO: Add your control notification handler code here

　　CString sFileFilter="*.hex|*.hex"

　　CString sFileName

　　CFileDialog fDlg(true,NULL,NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,sFileFilter,NULL)

　　fDlg.DoModal()

　　sFileName=fDlg.GetFileName()

　　if(sFileName!="")

　　{

　　　　CFile file(sFileName,CFile::modeRead)

　　　　int nFileLength=file.GetLength()

　　　　char *buffer

　　　　HGLOBAL hgl=::GlobalAlloc(GMEM_MOVEABLE,nFileLength+1)

　　　　buffer=(char *)::GlobalLock(hgl)

　　　　file.Read(buffer,nFileLength)

　　　　SetDlgItemText(IDC_EDIT1,buffer)

　　　　::GlobalUnlock(hgl)

　　　　::GlobalFree(hgl)

　　}

　　UpdateData(false) 　　

}

-Open a TXT file and displayed in the EDIT control steps: 1. Create a new dialog-based project, known as the ReadFile2. In the interface to add a button (IDC_BUTTON1) and a text editor (IDC_EDIT1) IDC_EDIT1 properties: multi-line, can be drop-down scroll bar .3. Edit button trigger events (void CReadFileDlg:: OnButton1 ()) void CReadFileDlg:: OnButton1 () (//TODO: Add your control notification handler code here CString sFileFilter =*. hex |*. hex CString sFileName CFileDialog fDlg (true, NULL, NULL, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, sFileFilter, NULL) fDlg.DoModal () sFileName = fDlg.GetFileName () if (sFileName! =) (CFile file (sFileName, CFile:: modeRead) int nFileLength = file.GetLength () char* buffer HGLOBAL hgl =:: GlobalAlloc (GMEM_MOVEABLE, nFileLength+ 1) buffer = (char*):: GlobalLock (hgl) file.Read (buffer, nFileLength) SetDlgItemText (IDC_EDIT1, buffer):: GlobalUnlock (hgl):: GlobalFree (hgl)) UpdateData (false))