MAXPATHLEN

#define MAXPATHLEN 1024

Provided for UNIX emulation on Windows; equivalent to UNIX macro MAXPATHLEN, which is the maximum length of a filename (including full path).

pipe()

#define pipe(phandles)	_pipe (phandles, 4096, _O_BINARY)

Provided for UNIX emulation on Windows; see documentation for pipe() in any UNIX manual.

g_win32_error_message ()

gchar*              g_win32_error_message               (gint error);

Translate a Win32 error code (as returned by GetLastError()) into the corresponding message. The message is either language neutral, or in the thread's language, or the user's language, the system's language, or US English (see docs for FormatMessage()). The returned string is in UTF-8. It should be deallocated with g_free().

g_win32_getlocale ()

gchar*              g_win32_getlocale                   (void);

The setlocale() function in the Microsoft C library uses locale names of the form "English_United States.1252" etc. We want the UNIXish standard form "en_US", "zh_TW" etc. This function gets the current thread locale from Windows - without any encoding info - and returns it as a string of the above form for use in forming file names etc. The returned string should be deallocated with g_free().

g_win32_get_package_installation_directory ()

gchar*              g_win32_get_package_installation_directory
                                                        (gchar *package,
                                                         gchar *dll_name);

Try to determine the installation directory for a software package.

package should be a short identifier for the package. Typically it is the same identifier as used for GETTEXT_PACKAGE in software configured using GNU autotools. The function first looks in the Windows Registry for the value #InstallationDirectory in the key #HKLM\Software\package, and if that value exists and is a string, returns that.

It is strongly recommended that packagers of GLib-using libraries for Windows do not store installation paths in the Registry to be used by this function as that interfers with having several parallel installations of the library. Parallel installations of different versions of some GLib-using library, or GLib itself, might well be desirable for various reasons.

For the same reason it is recommeded to always pass NULL as package to this function, to avoid the temptation to use the Registry.

If package is NULL, or the above value isn't found in the Registry, but dll_name is non-NULL, it should name a DLL loaded into the current process. Typically that would be the name of the DLL calling this function, looking for its installation directory. The function then asks Windows what directory that DLL was loaded from. If that directory's last component is "bin" or "lib", the parent directory is returned, otherwise the directory itself. If that DLL isn't loaded, the function proceeds as if dll_name was NULL.

If both package and dll_name are NULL, the directory from where the main executable of the process was loaded is used instead in the same way as above.

g_win32_get_package_installation_subdirectory ()

gchar*              g_win32_get_package_installation_subdirectory
                                                        (gchar *package,
                                                         gchar *dll_name,
                                                         gchar *subdir);

Returns a newly-allocated string containing the path of the subdirectory subdir in the return value from calling g_win32_get_package_installation_directory() with the package and dll_name parameters. See the documentation for g_win32_get_package_installation_directory() for more details. In particular, note that it is recomended to always pass NULL as package.

g_win32_get_windows_version ()

guint               g_win32_get_windows_version         (void);

Returns version information for the Windows operating system the code is running on. See MSDN documentation for the GetVersion() function. To summarize, the most significant bit is one on Win9x, and zero on NT-based systems. The least significant byte is 4 on Windows NT 4, 5 on Windows XP. Software that needs really detailled version and feature information should use Win32 API like GetVersionEx() and VerifyVersionInfo().

If there is an environment variable G_WIN32_PRETEND_WIN9X defined (with any value), this function always returns a version code for Windows 9x. This is mainly an internal debugging aid for GTK+ and GLib developers, to be able to check the code paths for Windows 9x.

Since 2.6

g_win32_locale_filename_from_utf8 ()

gchar*              g_win32_locale_filename_from_utf8   (const gchar *utf8filename);

Converts a filename from UTF-8 to the system codepage.

On NT-based Windows, on NTFS file systems, file names are in Unicode. It is quite possible that Unicode file names contain characters not representable in the system codepage. (For instance, Greek or Cyrillic characters on Western European or US Windows installations, or various less common CJK characters on CJK Windows installations.)

In such a case, and if the filename refers to an existing file, and the file system stores alternate short (8.3) names for directory entries, the short form of the filename is returned. Note that the "short" name might in fact be longer than the Unicode name if the Unicode name has very short pathname components containing non-ASCII characters. If no system codepage name for the file is possible, NULL is returned.

The return value is dynamically allocated and should be freed with g_free() when no longer needed.

Since 2.8

G_WIN32_DLLMAIN_FOR_DLL_NAME()

#define             G_WIN32_DLLMAIN_FOR_DLL_NAME(static, dll_name)

On Windows, this macro defines a DllMain() function that stores the actual DLL name that the code being compiled will be included in.

On non-Windows platforms, expands to nothing.

G_WIN32_HAVE_WIDECHAR_API()

#define G_WIN32_HAVE_WIDECHAR_API() (G_WIN32_IS_NT_BASED ())

On Windows, this macro defines an expression which evaluates to TRUE if the code is running on a version of Windows where the wide character versions of the Win32 API functions, and the wide chaacter versions of the C library functions work. (They are always present in the DLLs, but don't work on Windows 9x and Me.)

On non-Windows platforms, it is not defined.

Since 2.6

G_WIN32_IS_NT_BASED()

#define G_WIN32_IS_NT_BASED() (g_win32_get_windows_version () < 0x80000000)

On Windows, this macro defines an expression which evaluates to TRUE if the code is running on an NT-based Windows operating system.

On non-Windows platforms, it is not defined.

Since 2.6