请问如何用win32函数取得一个已知路径的文件夹的答小?
比如已知路径为C:\test\image\a.bmp,我想知道文件夹image的大小。谢谢!
比如已知路径为C:\test\image\a.bmp,我想知道文件夹image的大小。谢谢!
解决方案 »
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The following example copies all text files in the current directory to a new directory of read-only files named \TEXTRO. Files in the new directory are changed to read only, if necessary. The application uses the GetCurrentDirectory function to retrieve the current directory path. This function is also used to return to the current directory after changing to the \TEXTRO directory. The application then creates the \TEXTRO directory by using the CreateDirectory function. The application searches the current directory for all .TXT files by using the FindFirstFile and FindNextFile functions. Each .TXT file is copied to the \TEXTRO directory. After a file is copied, the GetFileAttributes function determines whether the file is read only. If the file is not read only, the application changes directories to \TEXTRO and converts the copied file to read only by using the SetFileAttributes function. After all .TXT files in the current directory have been copied, the application closes the search handle by using the FindClose function. WIN32_FIND_DATA FileData;
HANDLE hSearch;
DWORD dwAttrs;
char szDirPath[] = "c:\\TEXTRO\\";
char szNewPath[MAX_PATH];
char szHome[MAX_PATH];
BOOL fFinished = FALSE;
// Create a new directory.
if (!CreateDirectory(szDirPath, NULL))
{
ErrorHandler("Couldn't create new directory.");
}
// Start searching for .TXT files in the current directory.
hSearch = FindFirstFile("*.txt", &FileData);
if (hSearch == INVALID_HANDLE_VALUE)
{
ErrorHandler("No .TXT files found.");
}
// Copy each .TXT file to the new directory
// and change it to read only, if not already.
while (!fFinished)
{
lstrcpy(szNewPath, szDirPath);
lstrcat(szNewPath, FileData.cFileName);
if (CopyFile(FileData.cFileName, szNewPath, FALSE))
{
dwAttrs = GetFileAttributes(FileData.cFileName);
if (!(dwAttrs & FILE_ATTRIBUTE_READONLY))
{
SetFileAttributes(szNewPath,
dwAttrs | FILE_ATTRIBUTE_READONLY);
}
}
else
{
ErrorHandler("Couldn't copy file.");
}
if (!FindNextFile(hSearch, &FileData))
{
if (GetLastError() == ERROR_NO_MORE_FILES)
{
MessageBox(hwnd, "No more .TXT files.",
"Search completed.", MB_OK);
fFinished = TRUE;
}
else
{
ErrorHandler("Couldn't find next file.");
}
}
}
// Close the search handle.
if (!FindClose(hSearch))
{
ErrorHandler("Couldn't close search handle.");
}
Private folderSize As LongPrivate Function SearchPathFiles(ByVal SourcePath As String, Optional ByVal FileEx As String = "*.*")
If Right(SourcePath, 1) <> "\" Then SourcePath = SourcePath & "\"
Dim Filestr As String, FolderPath As String
On Error Resume Next
Filestr = Dir(SourcePath & "*.*", vbArchive Or vbHidden Or vbSystem Or vbDirectory)
Do While Filestr <> ""
DoEvents
If (GetAttr(SourcePath & Filestr) And vbDirectory) = vbDirectory Then
If Left(Filestr, 1) <> "." And Left(Filestr, 2) <> ".." Then
FolderPath = SourcePath & Filestr & ""
FoldersAll.Add FolderPath
End If
Else
If FileEx = "*.*" Then
FilesAll.Add SourcePath & Filestr
folderSize = folderSize + FileLen(SourcePath & Filestr)
Else
FileEx = GetFileExt(FileEx)
If GetFileExt(SourcePath & Filestr) = FileEx Then
FilesAll.Add SourcePath & Filestr
folderSize = folderSize + FileLen(SourcePath & Filestr)
End If
End If
End If
Filestr = Dir
Loop
End FunctionPrivate Function SearchPathFilesTmp(ByVal SourcePath As String, Optional ByVal FileEx As String = "*.*", Optional ByVal SubFlag As Boolean)
FoldersAll.Add SourcePath
Do
DoEvents
SearchPathFiles FoldersAll.Item(1), FileEx
If Not SubFlag Then Exit Do
FoldersAll.Remove 1
Loop Until FoldersAll.Count = 0
End Function
'此函数从字符串中分离出文件扩展名
Private Function GetFileExt(sFileName As String) As String
Dim P As Integer
For P = Len(sFileName) To 1 Step -1
If InStr(".", Mid$(sFileName, P, 1)) Then Exit For
Next
GetFileExt = Right$(sFileName, Len(sFileName) - P)
End FunctionPrivate Sub Command1_Click()
Dim str As String, i As Integer
Set FilesAll = New Collection
Set FoldersAll = New Collection
SearchPathFilesTmp "c:\boot", , True
MsgBox folderSize
End Sub
获得文件大小代码long lngNumber = 0;
CString StrFileName = "";
CFileStatus Status;
CString StrFileSize;
if(CFile::GetStatus(StrFileName,Status))
{
lngNumber = lngNumber + Status.m_size;
}
http://blog.csdn.net/vcmute/archive/2005/10/16/504616.aspx