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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

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42202 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2006-10-21 15:18:38 +00:00
parent 194b226768
commit f2346d3fd6
1 changed files with 24 additions and 27 deletions
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51
src/common/filefn.cpp
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@@ -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