剛剛看到VC知識庫二十期中的一篇文章《遍歷文件夾並建成目錄樹》。主要 是用一個遞歸函數來掃描目標文件夾,但是這個函數還存在目錄層數的限制。
我寫了另外一個函數,實現的結果跟上文一模一樣,但消除了目錄層數的限 制, 原代碼與改進後的代碼如下:
//原來的函數原型void CFileTreeDlg::BrowseFile(int CallNum, CString strFile)
{
CallNum++;
CFileFind ff;
CString szDir = strFile;
if(szDir.Right(1) != "\\")
szDir += "\\";
szDir += "*.*";
BOOL res = ff.FindFile(szDir);
while(res)
{
res = ff.FindNextFile();
if(ff.IsDirectory() && !ff.IsDots())
{
//如果是一個子目錄,用遞歸繼續往深一層找
CString strPath = ff.GetFilePath();
CString strTitle = ff.GetFileTitle();
int i =0;
switch(CallNum)
{
case 1:
strHTFir =
m_FileTree.InsertItem(strTitle,0,0,NULL);
break;
case 2:
strHTSec =
m_FileTree.InsertItem(strTitle,0,0,strHTFir);
break;
case 3:
strHtThi =
m_FileTree.InsertItem(strTitle,0,0,strHTSec);
break;
case 4:
strHtFor =
m_FileTree.InsertItem(strTitle,0,0,strHtThi);
break;
default:
strHtFif =
m_FileTree.InsertItem(strTitle,0,0,strHtFor);
break;
}
BrowseFile(CallNum,strPath);
}
else if(!ff.IsDirectory() && !ff.IsDots())
{
//顯示當前訪問的文件
CString strPath;
CString strTitle;
strPath = ff.GetFilePath();
strTitle = ff.GetFileTitle();
switch(CallNum)
{
case 1:
strRoot =
m_FileTree.InsertItem(strTitle,0,0,NULL);
break;
case 2:
strHtEnd =
m_FileTree.InsertItem(strTitle,0,0,strHTFir);
break;
case 3:
strHtEnd =
m_FileTree.InsertItem(strTitle,0,0,strHTSec);
break;
case 4:
strHtEnd = m_FileTree.InsertItem(strTitle,0,
0,strHtThi);
break;
case 5:
strHtEnd = m_FileTree.InsertItem(strTitle,0,
0,strHtFor);
break;
default:
strHtEnd = m_FileTree.InsertItem(strTitle,0,
0,strHtFif);
break;
}
}
}
ff.Close();//關閉
}
//原來的函數調用
BOOL CFileTreeDlg::OnInitDialog()
{
CDialog::OnInitDialog();
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
m_iImageList.Create(24, 24, TRUE,1, 0);
HICON hIcon = NULL;
hIcon = (HICON)::LoadImage(::AfxGetInstanceHandle(),
MAKEINTRESOURCE(IDI_KEBIAO), IMAGE_ICON, 24, 24, 0);
m_iImageList.Add(hIcon);
m_FileTree.SetImageList ( &m_iImageList,TVSIL_NORMAL );
BrowseFile(0,"成績表"); //遍歷"成績表"文件 夾內的所有目錄
return TRUE;
}
//改過後的函數原型
void CFileTreeDlg::BrowseDir( CString strDir, HTREEITEM parent )
{
CFileFind ff;
CString szDir = strDir;
HTREEITEM hSubItem;
if(szDir.Right(1) != "\\")
szDir += "\\";
szDir += "*.*";
BOOL res = ff.FindFile(szDir);
while( res )
{
res = ff.FindNextFile();
if(ff.IsDirectory() && !ff.IsDots())
{
CString strPath = ff.GetFilePath();
CString strTitle = ff.GetFileTitle();
hSubItem =
m_FileTree.InsertItem( strTitle, 0, 0,parent );
BrowseDir( strPath, hSubItem );
}
else if(!ff.IsDirectory() && !ff.IsDots())
{
CString strTitle = ff.GetFileTitle();
m_FileTree.InsertItem( strTitle, 0, 0, parent );
}
}
ff.Close();
}
//改過後的函數調用
BOOL CFileTreeDlg::OnInitDialog()
{
CDialog::OnInitDialog();
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
m_iImageList.Create(24, 24, TRUE,1, 0);
HICON hIcon = NULL;
hIcon = (HICON)::LoadImage(::AfxGetInstanceHandle(),
MAKEINTRESOURCE(IDI_KEBIAO), IMAGE_ICON, 24, 24, 0);
m_iImageList.Add(hIcon);
m_FileTree.SetImageList ( &m_iImageList,TVSIL_NORMAL );
BrowseDir( "成績表", NULL );
return TRUE;
}
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