char szFilter[] = {"All Files(*.*)|*.*||"};
	CFileDialog dlg(TRUE,NULL,NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,szFilter,NULL);
	
	if(dlg.DoModal() == IDOK)
	{
		m_strFilePath = dlg.GetPathName();
		//m_strFileName = dlg.GetFileName();
		m_strFileName = dlg.GetFileTitle();
		lpszFileName = (LPCSTR)m_strFilePath;
		strDir[0] = m_strFilePath;
	}
	else
	{
	}
	
CFileDialog(BOOL bOpenFileDialog,
            LPCTSTR lpszDefExt = NULL,
            LPCTSTR lpszFileName = NULL,
            DWORD dwFlags = OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
            LPCTSTR lpszFilter = NULL,
            CWnd* pParentWnd = NULL
           );

引數：
 

常用的幾個函式：

至於if(dlg.DoModal() == IDOK)後面加一個else是因為我發現沒有的話經常出錯