DOCUMENT:Q184525 06-AUG-1999 [foxpro] TITLE :HOWTO: Use API Functions to Set and Check File Attributes PRODUCT :Microsoft FoxPro PROD/VER:WINDOWS:3.0b,5.0,5.0a OPER/SYS: KEYWORDS:kbvfp ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual FoxPro for Windows, versions 3.0b, 5.0, 5.0a ------------------------------------------------------------------------------- SUMMARY ======= This article has program code that creates a file named Test.txt in the home directory of Visual FoxPro, sets each of several file attributes using the SetFileAttributes() API, then verifies that the attributes were correctly set using the GetFileAttributes() API. MORE INFORMATION ================ Create a program called Setatrib, place the sample code given below in the file, and run the program. Sample Code ----------- * * Usage: DO Setatrib * * constants from from Winnt.h #DEFINE FILE_ATTRIBUTE_READONLY 1 #DEFINE FILE_ATTRIBUTE_HIDDEN 2 #DEFINE FILE_ATTRIBUTE_SYSTEM 4 #DEFINE FILE_ATTRIBUTE_ARCHIVE 32 #DEFINE FILE_ATTRIBUTE_NORMAL 128 #DEFINE FILE_ATTRIBUTE_TEMPORARY 256 #DEFINE CR chr(13) DECLARE INTEGER SetFileAttributes in Win32API STRING FileName, INTEGER Attributes DECLARE INTEGER GetFileAttributes in Win32API STRING FileName m.filename = HOME() + '\TEST.TXT' * Create a zero-length one if it doesn't exist. if not file(m.filename) m.handle = fcreate(m.filename) =fclose(m.handle) endif * Set and test several attributes. m.retval = SetFileAttributes(m.filename, FILE_ATTRIBUTE_READONLY) =ShowFAttr(m.filename) m.retval = SetFileAttributes(m.filename, FILE_ATTRIBUTE_HIDDEN) =ShowFAttr(m.filename) m.retval = SetFileAttributes(m.filename, FILE_ATTRIBUTE_SYSTEM) =ShowFAttr(m.filename) m.retval = SetFileAttributes(m.filename, FILE_ATTRIBUTE_ARCHIVE) =ShowFAttr(m.filename) m.retval = SetFileAttributes(m.filename, FILE_ATTRIBUTE_NORMAL) =ShowFAttr(m.filename) m.retval = SetFileAttributes(m.filename, FILE_ATTRIBUTE_TEMPORARY) =ShowFAttr(m.filename) * Attributes can also be combined by ORing them together. m.retval = SetFileAttributes(m.filename, bitor(FILE_ATTRIBUTE_HIDDEN, ; FILE_ATTRIBUTE_SYSTEM)) =ShowFAttr(m.filename) * Function ShowFAttr * Accepts a fully-qualified filename. * Displays a message box showing each attribute of that file. * * Usage = ShowFattr("c:\mydir\myfile.txt") * function ShowFAttr parameters m.filename m.attribute = GetFileAttributes(m.filename) * Attribute string for use in a message box. m.attr = '' * These aren't necessarily mutually exclusive, so use Ifs. if bitand(m.attribute, FILE_ATTRIBUTE_READONLY) = ; FILE_ATTRIBUTE_READONLY m.attr = m.attr + 'Read only' + CR endif if bitand(m.attribute, FILE_ATTRIBUTE_HIDDEN) = FILE_ATTRIBUTE_HIDDEN m.attr = m.attr + 'Hidden' + CR endif if bitand(m.attribute, FILE_ATTRIBUTE_SYSTEM) = FILE_ATTRIBUTE_SYSTEM m.attr = m.attr + 'System' + CR endif if bitand(m.attribute, FILE_ATTRIBUTE_ARCHIVE) = FILE_ATTRIBUTE_ARCHIVE m.attr = m.attr + 'Archive' + CR endif if bitand(m.attribute, FILE_ATTRIBUTE_NORMAL) = FILE_ATTRIBUTE_NORMAL m.attr = m.attr + 'Normal' + CR endif if bitand(m.attribute, FILE_ATTRIBUTE_TEMPORARY) = ; FILE_ATTRIBUTE_TEMPORARY m.attr = m.attr + 'Temporary' + CR endif =messagebox("File " + m.filename + ' has the following attributes: ' + ; CR + m.attr, 0 + 64 + 0, "GetFileAttributes()") Additional query words: ====================================================================== Keywords : kbvfp Technology : kbVFPsearch kbAudDeveloper kbVFP300b kbVFP500 kbVFP500a Version : WINDOWS:3.0b,5.0,5.0a Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.