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POFindNextFile fails on 64-bit Windows?
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  1. POFindNextFile fails on 64-bit Windows?
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    copied!<p>using C++Builder 2007, the FindFirstFile and FindNextFile functions doesn't seem to be able to find some files on 64-bit versions of Vista and XP. My test application is 32-bit.</p> <p>If I use them to iterate through the folder C:\Windows\System32\Drivers they only find a handful of files although there are 185 when I issue a dir command in a command prompt. Using the same example code lists all files fine on a 32-bit version of XP.</p> <p>Here is a small example program:</p> <pre><code>int main(int argc, char* argv[]) { HANDLE hFind; WIN32_FIND_DATA FindData; int ErrorCode; bool cont = true; cout &lt;&lt; "FindFirst/Next demo." &lt;&lt; endl &lt;&lt; endl; hFind = FindFirstFile("*.*", &amp;FindData); if(hFind == INVALID_HANDLE_VALUE) { ErrorCode = GetLastError(); if (ErrorCode == ERROR_FILE_NOT_FOUND) { cout &lt;&lt; "There are no files matching that path/mask\n" &lt;&lt; endl; } else { cout &lt;&lt; "FindFirstFile() returned error code " &lt;&lt; ErrorCode &lt;&lt; endl; } cont = false; } else { cout &lt;&lt; FindData.cFileName &lt;&lt; endl; } if (cont) { while (FindNextFile(hFind, &amp;FindData)) { cout &lt;&lt; FindData.cFileName &lt;&lt; endl; } ErrorCode = GetLastError(); if (ErrorCode == ERROR_NO_MORE_FILES) { cout &lt;&lt; endl &lt;&lt; "All files logged." &lt;&lt; endl; } else { cout &lt;&lt; "FindNextFile() returned error code " &lt;&lt; ErrorCode &lt;&lt; endl; } if (!FindClose(hFind)) { ErrorCode = GetLastError(); cout &lt;&lt; "FindClose() returned error code " &lt;&lt; ErrorCode &lt;&lt; endl; } } return 0; } </code></pre> <p>Running it in the C:\Windows\System32\Drivers folder on 64-bit XP returns this:</p> <pre><code>C:\WINDOWS\system32\drivers&gt;t:\Project1.exe FindFirst/Next demo. . .. AsIO.sys ASUSHWIO.SYS hfile.txt raspti.zip stcp2v30.sys truecrypt.sys All files logged. </code></pre> <p>A dir command on the same system returns this:</p> <pre><code>C:\WINDOWS\system32\drivers&gt;dir/p Volume in drive C has no label. Volume Serial Number is E8E1-0F1E Directory of C:\WINDOWS\system32\drivers 16-09-2008 23:12 &lt;DIR&gt; . 16-09-2008 23:12 &lt;DIR&gt; .. 17-02-2007 00:02 80.384 1394bus.sys 16-09-2008 23:12 9.453 a.txt 17-02-2007 00:02 322.560 acpi.sys 29-03-2006 14:00 18.432 acpiec.sys 24-03-2005 17:11 188.928 aec.sys 21-06-2008 15:07 291.840 afd.sys 29-03-2006 14:00 51.712 amdk8.sys 17-02-2007 00:03 111.104 arp1394.sys 08-05-2006 20:19 8.192 ASACPI.sys 29-03-2006 14:00 25.088 asyncmac.sys 17-02-2007 00:03 150.016 atapi.sys 17-02-2007 00:03 106.496 atmarpc.sys 29-03-2006 14:00 57.344 atmepvc.sys 17-02-2007 00:03 91.648 atmlane.sys 17-02-2007 00:03 569.856 atmuni.sys 24-03-2005 19:12 5.632 audstub.sys 29-03-2006 14:00 6.144 beep.sys Press any key to continue . . . etc. </code></pre> <p>I'm puzzled. What is the reason for this?</p> <p>Brian</p>
 

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