#include "stdafx.h"
#include "PathStringManager.h"

CPathStringOper::CPathStringOper(void)
{
}

CPathStringOper::~CPathStringOper(void)
{
}

CPathStringOper::GetFolderPathFromFullPath(LPCTSTR lpszFullPath)
{
 // 獲取檔案路徑：
 // 注意不是“/”以結尾,因為使用過程中加上一個“/”容易，減去一個不容易
 CString m_strOriFileName(lpszFullPath);

 CString strPath;
    int n=m_strOriFileName.ReverseFind('//')+1;
    strPath=m_strOriFileName.Left(n);
 return strPath;
}

CPathStringOper::GetFileFullNameFromFullPath(LPCTSTR lpszFullPath)
{
 // 獲取檔名：
 CString m_strOriFileName(lpszFullPath);
  
    CString strPath;
    int n=m_strOriFileName.GetLength()-m_strOriFileName.ReverseFind('//')-1;
    strPath=m_strOriFileName.Right(n);

 return strPath;
}

CPathStringOper::GetFileExtNameFromFullPath(LPCTSTR lpszFullPath)
{
    // 同理，獲取檔案字尾名則為：
    CString m_strOriFileName(lpszFullPath);
 
 CString strFileType;
    int n=m_strOriFileName.GetLength()-m_strOriFileName.ReverseFind('.')-1;
    strFileType=m_strOriFileName.Right(n);

 return strFileType;
}

>>> 後來發現Windows 本身就能,就提供API實現，

不過  GetFolderPathFromFullPath(LPCTSTR lpszFullPath),GetFileExtNameFromFullPath(LPCTSTR lpszFullPath) API沒有

Common Dialog Box Functions

The following functions are used with common dialog boxes.

The following functions are used with common dialog boxes.

ChooseColor 
ChooseFont 
CommDlgExtendedError 
FindText
GetFileTitle 
GetOpenFileName 
GetSaveFileName 
PageSetupDlg 
PrintDlg 
PrintDlgEx 
ReplaceText 

short GetFileTitle(
  LPCTSTR lpszFile,  // pointer to full path and filename for file
  LPTSTR lpszTitle,  // pointer to buffer that receives filename
  WORD cbBuf         // length of buffer
);

BOOL GetOpenFileName(
  LPOPENFILENAME lpofn   // address of structure with initialization
                         // data
);