From f2346d3fd62de2307531c91062ff87a0cc97a42f Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sat, 21 Oct 2006 15:18:38 +0000
Subject: [PATCH] don't use GetFileAttributesEx() which doesn't exist in Win95
 and so prevented any wx program from even starting up there; besides it was
 unneeded anyhow

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42202 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/common/filefn.cpp | 51 ++++++++++++++++++++-----------------------
 1 file changed, 24 insertions(+), 27 deletions(-)

diff --git a/src/common/filefn.cpp b/src/common/filefn.cpp
index caaf99caf1..73c0a0c036 100644
--- a/src/common/filefn.cpp
+++ b/src/common/filefn.cpp
@@ -1771,38 +1771,35 @@ int WXDLLEXPORT wxParseCommonDialogsFilter(const wxString& filterStr,
 }
 
 #if defined( __WINDOWS__ )
-bool wxCheckGenericPermission(const wxString &path, DWORD access)
+static bool wxCheckWin32Permission(const wxString& path, DWORD access)
 {
     // quoting the MSDN: "To obtain a handle to a directory, call the
-    // CreateFile function with the FILE_FLAG_BACKUP_SEMANTICS flag"
-    wxWinVersion ver = wxGetWinVersion();
+    // CreateFile function with the FILE_FLAG_BACKUP_SEMANTICS flag", but this
+    // doesn't work under Win9x/ME but then it's not needed there anyhow
     bool isdir = wxDirExists(path);
-    if (isdir && (ver == wxWinVersion_95 || ver == wxWinVersion_98 || ver == wxWinVersion_ME))
+    if ( isdir && wxGetOsVersion() == wxOS_WINDOWS_9X )
     {
-        // however Win95/98/ME do not support FILE_FLAG_BACKUP_SEMANTICS...
-        if (access == GENERIC_READ)
-        {
-            WIN32_FILE_ATTRIBUTE_DATA data;
-            if (GetFileAttributesEx(path.c_str(), GetFileExInfoStandard, &data) == 0)
-                return false;        // cannot query attributes
-            return (data.dwFileAttributes & FILE_ATTRIBUTE_READONLY) == 0;
-        }
-
-        // FIXME: is it true that directories are always writable & executable on Win9X family ?
+        // FAT directories always allow all access, even if they have the
+        // readonly flag set
         return true;
     }
-    else
-    {
-        HANDLE h = CreateFile(path.c_str(), access,
-                              FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL,
-                              OPEN_EXISTING, isdir ? FILE_FLAG_BACKUP_SEMANTICS : 0, NULL);
-        if (h != INVALID_HANDLE_VALUE)
-            CloseHandle(h);
 
-        return h != INVALID_HANDLE_VALUE;
-    }
+    HANDLE h = ::CreateFile
+                 (
+                    path.c_str(),
+                    access,
+                    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                    NULL,
+                    OPEN_EXISTING,
+                    isdir ? FILE_FLAG_BACKUP_SEMANTICS : 0,
+                    NULL
+                 );
+    if ( h != INVALID_HANDLE_VALUE )
+        CloseHandle(h);
+
+    return h != INVALID_HANDLE_VALUE;
 }
-#endif
+#endif // __WINDOWS__
 
 bool wxIsWritable(const wxString &path)
 {
@@ -1810,7 +1807,7 @@ bool wxIsWritable(const wxString &path)
     // access() will take in count also symbolic links
     return access(wxConvFile.cWX2MB(path), W_OK) == 0;
 #elif defined( __WINDOWS__ )
-    return wxCheckGenericPermission(path, GENERIC_WRITE);
+    return wxCheckWin32Permission(path, GENERIC_WRITE);
 #else
     wxUnusedVar(path);
     // TODO
@@ -1824,7 +1821,7 @@ bool wxIsReadable(const wxString &path)
     // access() will take in count also symbolic links
     return access(wxConvFile.cWX2MB(path), R_OK) == 0;
 #elif defined( __WINDOWS__ )
-    return wxCheckGenericPermission(path, GENERIC_READ);
+    return wxCheckWin32Permission(path, GENERIC_READ);
 #else
     wxUnusedVar(path);
     // TODO
@@ -1838,7 +1835,7 @@ bool wxIsExecutable(const wxString &path)
     // access() will take in count also symbolic links
     return access(wxConvFile.cWX2MB(path), X_OK) == 0;
 #elif defined( __WINDOWS__ )
-   return wxCheckGenericPermission(path, GENERIC_EXECUTE);
+   return wxCheckWin32Permission(path, GENERIC_EXECUTE);
 #else
     wxUnusedVar(path);
     // TODO
-- 
2.45.2