我想用VC查找一个文件夹里的所有TXT文档中最新的一个 并读取它的内容 请问如何 *** 作？？？

给你一个思路先遍历这个文件夹下的txt文件，然后逐个创建比较时间，并保存最新的文件名到一个变量上面，然后用CFile：：read 读取内容。

给你一段伪代码  自己修改试试

HANDLE hSearch 

WIN32_FIND_DATA FileData, tempFileData

        hSearch = FindFirstFile("E:\\XX\\*.txt", &FileData) //首先找到的是“.”

if (hSearch == INVALID_HANDLE_VALUE)return 0

if (! FindNextFile(hSearch, &FileData))  return 0     //然后找到的是“..”

FindNextFile(hSearch, &tempFileData)//把第一个文件的信息保存在tempFileData上

while (1) 

{ 

if (!FindNextFile(hSearch, &FileData)) 

break

else

{

if（CompareFileTime(FileData.ftCreationTime ,tempFileData.ftCreationTime )==-1）{

                         tempFileDataFileData

                         }

}

}

FindClose(hSearch)

        CFile file

        file.open("路径+\\tempFileData.cFileName")

        char buf[xx]

        file.read(buf......)

        file.close()

这个嘛，我原来也做过这个问题的，当时是在MSDN找到示例后，自己做过的改动的，主要是用CFileFind这个类，然后递归调用，具体的你看看下面的代码！希望对你有用。。。不懂的可以交流嘛

void CMusicFileManagerDlg::SearchDirectory(CString strFolderPath, UINT&nCount)

{

CFileFind finder

UpdateData(TRUE)

FileAtt* att = new FileAtt

CString str = strFolderPath

if(str != "" &&str.Right(1) != '\\')//为全目录名添加'\'

str += '\\'

strFolderPath = str

BOOL bWorking = finder.FindFile(strFolderPath + _T("*.*"))

LVITEM item

item.mask = LVIF_TEXT

item.iSubItem = 0

while(bWorking)

{

bWorking = finder.FindNextFile()

if(finder.IsDirectory() &&!finder.IsDots())

{

strFolderPath = finder.GetFilePath()

//AfxMessageBox(strFolderPath)

SetDlgItemText(IDC_STATIC_CURSEARCHDIR, strFolderPath)

SearchDirectory(strFolderPath, nCount)

}

else if( (strFolderPath = finder.GetFilePath()).Right(4).MakeLower() == _T(".mp3")

//|| (strFolderPath = finder.GetFilePath()).Right(4).MakeLower() == _T(".wma")

)

{

if(GetFileAttrib(strFolderPath, att) == false)

AfxMessageBox(_T("文件[") + strFolderPath + _T("]未读取成功"),MB_ICONQUESTION)

CString temp(att->ID3V1)

TRACE(temp + _T(" "))

if(strcmp(att->ID3V1, "TAG"))

continue

item.iItem = ++nCount

CString temp1(att->title)

TRACE(_T("title = %d\n"), strlen(att->title))

if(strlen(att->title) >0)

{

item.pszText =(LPTSTR)(LPCTSTR)(temp1)

m_filelist.InsertItem(&item)

}

else //如果是空的标题，则自动替换为文件名

{

CString str = finder.GetFileTitle()

item.pszText = (LPTSTR)(LPCTSTR)(str)

m_filelist.InsertItem(&item)

}

CString temp2

strlen(att->singer) >0 ? temp2 = att->singer : temp2 = _T("未知艺术家")

m_filelist.SetItemText(nCount - 1, 1, temp2)

CString temp3

strlen(att->album) >0 ? temp3 = att->album : temp3 = _T("未知专辑")

m_filelist.SetItemText(nCount - 1, 2, temp3)

int q = int(att->type[0])

if(q >-1 &&q <116)

{

CString temp4(convert[int(att->type[0])])

m_filelist.SetItemText(nCount - 1, 3, temp4)

}

else

{

CString temp4("Unknown")

m_filelist.SetItemText(nCount - 1, 3, temp4)

}

CString temp5(att->year)

m_filelist.SetItemText(nCount - 1, 4, temp5)

m_filelist.SetItemText(nCount - 1, 5, finder.GetRoot())

m_filelist.SetItemText(nCount - 1, 6, finder.GetFileName())

CString strfilename = finder.GetFileName()

CString strfiletitle = finder.GetFileTitle()

int nextLength = strfilename.GetLength() - strfiletitle.GetLength()

strfilename = strfilename.Right(nextLength - 1)

m_filelist.SetItemText(nCount - 1, 7, strfilename)

}

}//end of while

finder.Close()

m_nCount = nCount

UpdateData(FALSE)

delete att

}

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