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Q200072: HOWTO: Initializing lpstrFilter for All Files on the Macintosh

Article: Q200072
Product(s): Microsoft C Compiler
Version(s): MACINTOSH:4.0,4.0b
Operating System(s): 
Keyword(s): kbHWMAC kbVC kbDSupport
Last Modified: 06-FEB-2000

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The information in this article applies to:

- Microsoft Visual C++, Macintosh Cross-Development Addon, versions 4.0, 4.0b 
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SUMMARY
=======

On the Macintosh, to list all files, you must use "****" as the filter string
(lpstrFilter) for the open file dialog box (GetOpenFileName).

MORE INFORMATION
================

GetOpenFileName uses the lpstrFilter field of the OPENFILENAME structure to
specify file filters. It points to a list of string pairs, separated by null
characters. Each pair contains the display string and the filter pattern. On the
Intel platform, a filter string of "*.*" specifies all files. The Windows
Portability Library (WPL) uses "****", instead. Below is an MFC-based example:

          CString strFilter;
          CFileDialog dlgFile(TRUE);
          CString allFilter = "All Files (*.*)";
          strFilter += allFilter;
          strFilter += (TCHAR)'\0';   // Next string please.

  #ifndef _MAC

          strFilter += _T("*.*");

  #else

          strFilter += _T("****");

  #endif

          strFilter += (TCHAR)'\0';   // Last string.
          dlgFile.m_ofn.lpstrFilter = strFilter;

REFERENCES
==========

(c) Microsoft Corporation 1999, All Rights Reserved. Contributions by Adam Kim,
Microsoft Corporation.


Additional query words: OPENFILENAME lpstrFilter GetOpenFileName

======================================================================
Keywords          : kbHWMAC kbVC kbDSupport 
Technology        : kbVCsearch kbHWMAC kbOSMAC kbAudDeveloper kbVCXDev400Mac kbVCXDev400bMac
Version           : MACINTOSH:4.0,4.0b
Hardware          : MAC
Issue type        : kbhowto

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