5 use vars qw|$VERSION $XS_VERSION @ISA @EXPORT @EXPORT_OK|;
10 @ISA = qw|Exporter DynaLoader|;
12 $XS_VERSION = $VERSION;
13 $VERSION = eval $VERSION;
18 OWNER_SECURITY_INFORMATION
19 GROUP_SECURITY_INFORMATION
20 DACL_SECURITY_INFORMATION
21 SACL_SECURITY_INFORMATION
49 CSIDL_DESKTOPDIRECTORY
53 CSIDL_COMMON_STARTMENU
56 CSIDL_COMMON_DESKTOPDIRECTORY
60 CSIDL_COMMON_FAVORITES
70 CSIDL_PROGRAM_FILES_COMMON
71 CSIDL_COMMON_TEMPLATES
72 CSIDL_COMMON_DOCUMENTS
73 CSIDL_COMMON_ADMINTOOLS
79 CSIDL_RESOURCES_LOCALIZED
84 # We won't bother with the constant stuff, too much of a hassle. Just hard
88 sub WIN31_CLASS { &NULL }
90 sub OWNER_SECURITY_INFORMATION { 0x00000001 }
91 sub GROUP_SECURITY_INFORMATION { 0x00000002 }
92 sub DACL_SECURITY_INFORMATION { 0x00000004 }
93 sub SACL_SECURITY_INFORMATION { 0x00000008 }
95 sub MB_ICONHAND { 0x00000010 }
96 sub MB_ICONQUESTION { 0x00000020 }
97 sub MB_ICONEXCLAMATION { 0x00000030 }
98 sub MB_ICONASTERISK { 0x00000040 }
99 sub MB_ICONWARNING { 0x00000030 }
100 sub MB_ICONERROR { 0x00000010 }
101 sub MB_ICONINFORMATION { 0x00000040 }
102 sub MB_ICONSTOP { 0x00000010 }
105 # Newly added constants. These have an empty prototype, unlike the
106 # the ones above, which aren't prototyped for compatibility reasons.
109 sub SW_SHOWNORMAL () { 1 }
110 sub SW_SHOWMINIMIZED () { 2 }
111 sub SW_SHOWMAXIMIZED () { 3 }
112 sub SW_SHOWNOACTIVATE () { 4 }
114 sub CSIDL_DESKTOP () { 0x0000 } # <desktop>
115 sub CSIDL_PROGRAMS () { 0x0002 } # Start Menu\Programs
116 sub CSIDL_PERSONAL () { 0x0005 } # "My Documents" folder
117 sub CSIDL_FAVORITES () { 0x0006 } # <user name>\Favorites
118 sub CSIDL_STARTUP () { 0x0007 } # Start Menu\Programs\Startup
119 sub CSIDL_RECENT () { 0x0008 } # <user name>\Recent
120 sub CSIDL_SENDTO () { 0x0009 } # <user name>\SendTo
121 sub CSIDL_STARTMENU () { 0x000B } # <user name>\Start Menu
122 sub CSIDL_MYMUSIC () { 0x000D } # "My Music" folder
123 sub CSIDL_MYVIDEO () { 0x000E } # "My Videos" folder
124 sub CSIDL_DESKTOPDIRECTORY () { 0x0010 } # <user name>\Desktop
125 sub CSIDL_NETHOOD () { 0x0013 } # <user name>\nethood
126 sub CSIDL_FONTS () { 0x0014 } # windows\fonts
127 sub CSIDL_TEMPLATES () { 0x0015 }
128 sub CSIDL_COMMON_STARTMENU () { 0x0016 } # All Users\Start Menu
129 sub CSIDL_COMMON_PROGRAMS () { 0x0017 } # All Users\Start Menu\Programs
130 sub CSIDL_COMMON_STARTUP () { 0x0018 } # All Users\Startup
131 sub CSIDL_COMMON_DESKTOPDIRECTORY () { 0x0019 } # All Users\Desktop
132 sub CSIDL_APPDATA () { 0x001A } # Application Data, new for NT4
133 sub CSIDL_PRINTHOOD () { 0x001B } # <user name>\PrintHood
134 sub CSIDL_LOCAL_APPDATA () { 0x001C } # non roaming, user\Local Settings\Application Data
135 sub CSIDL_COMMON_FAVORITES () { 0x001F }
136 sub CSIDL_INTERNET_CACHE () { 0x0020 }
137 sub CSIDL_COOKIES () { 0x0021 }
138 sub CSIDL_HISTORY () { 0x0022 }
139 sub CSIDL_COMMON_APPDATA () { 0x0023 } # All Users\Application Data
140 sub CSIDL_WINDOWS () { 0x0024 } # GetWindowsDirectory()
141 sub CSIDL_SYSTEM () { 0x0025 } # GetSystemDirectory()
142 sub CSIDL_PROGRAM_FILES () { 0x0026 } # C:\Program Files
143 sub CSIDL_MYPICTURES () { 0x0027 } # "My Pictures", new for Win2K
144 sub CSIDL_PROFILE () { 0x0028 } # USERPROFILE
145 sub CSIDL_PROGRAM_FILES_COMMON () { 0x002B } # C:\Program Files\Common
146 sub CSIDL_COMMON_TEMPLATES () { 0x002D } # All Users\Templates
147 sub CSIDL_COMMON_DOCUMENTS () { 0x002E } # All Users\Documents
148 sub CSIDL_COMMON_ADMINTOOLS () { 0x002F } # All Users\Start Menu\Programs\Administrative Tools
149 sub CSIDL_ADMINTOOLS () { 0x0030 } # <user name>\Start Menu\Programs\Administrative Tools
150 sub CSIDL_COMMON_MUSIC () { 0x0035 } # All Users\My Music
151 sub CSIDL_COMMON_PICTURES () { 0x0036 } # All Users\My Pictures
152 sub CSIDL_COMMON_VIDEO () { 0x0037 } # All Users\My Video
153 sub CSIDL_RESOURCES () { 0x0038 } # %windir%\Resources\, For theme and other windows resources.
154 sub CSIDL_RESOURCES_LOCALIZED () { 0x0039 } # %windir%\Resources\<LangID>, for theme and other windows specific resources.
155 sub CSIDL_CDBURN_AREA () { 0x003B } # <user name>\Local Settings\Application Data\Microsoft\CD Burning
157 ### This method is just a simple interface into GetOSVersion(). More
158 ### specific or demanding situations should use that instead.
160 my ($cached_os, $cached_desc);
163 unless (defined $cached_os) {
164 my($desc, $major, $minor, $build, $id, undef, undef, undef, $producttype)
165 = Win32::GetOSVersion();
166 ($cached_os, $cached_desc) = _GetOSName($desc, $major, $minor, $build, $id, $producttype);
168 return wantarray ? ($cached_os, $cached_desc) : $cached_os;
172 my($desc, $major, $minor, $build, $id, $producttype) = @_;
179 $os = { 0 => "95", 10 => "98", 90 => "Me" }->{$minor};
185 elsif ($major == 4) {
188 elsif ($major == 5) {
189 $os = { 0 => "2000", 1 => "XP/.Net", 2 => "2003" }->{$minor};
191 elsif ($major == 6) {
192 $os = { 0 => "Vista", 1 => "7" }->{$minor};
193 # 2008 is same as Vista but has "Domaincontroller" or "Server" type
194 $os = "2008" if $os eq "Vista" && $producttype != 1;
198 unless (defined $os) {
199 warn "Unknown Windows version [$id:$major:$minor]";
203 # Take a look at the build numbers and try to deduce
204 # the exact release name, but we put that in the $desc
206 $tag = { 67109814 => "(a)", 67306684 => "(b1)", "67109975" => "(b2)" }->{$build};
208 elsif ($os eq "98" && $build eq "67766446") {
212 $desc = length($desc) ? "$tag $desc" : $tag;
215 return ("Win$os", $desc);
218 # "no warnings 'redefine';" doesn't work for 5.8.7 and earlier
228 Win32 - Interfaces to some Win32 API Functions
232 The Win32 module contains functions to access Win32 APIs.
234 =head2 Alphabetical Listing of Win32 Functions
236 It is recommended to C<use Win32;> before any of these functions;
237 however, for backwards compatibility, those marked as [CORE] will
238 automatically do this for you.
240 In the function descriptions below the term I<Unicode string> is used
241 to indicate that the string may contain characters outside the system
242 codepage. The caveat I<If supported by the core Perl version>
243 generally means Perl 5.8.9 and later, though some Unicode pathname
244 functionality may work on earlier versions.
248 =item Win32::AbortSystemShutdown(MACHINE)
250 Aborts a system shutdown (started by the
251 InitiateSystemShutdown function) on the specified MACHINE.
253 =item Win32::BuildNumber()
255 [CORE] Returns the ActivePerl build number. This function is
256 only available in the ActivePerl binary distribution.
258 =item Win32::CopyFile(FROM, TO, OVERWRITE)
260 [CORE] The Win32::CopyFile() function copies an existing file to a new
261 file. All file information like creation time and file attributes will
262 be copied to the new file. However it will B<not> copy the security
263 information. If the destination file already exists it will only be
264 overwritten when the OVERWRITE parameter is true. But even this will
265 not overwrite a read-only file; you have to unlink() it first
268 =item Win32::CreateDirectory(DIRECTORY)
270 Creates the DIRECTORY and returns a true value on success. Check $^E
271 on failure for extended error information.
273 DIRECTORY may contain Unicode characters outside the system codepage.
274 Once the directory has been created you can use
275 Win32::GetANSIPathName() to get a name that can be passed to system
276 calls and external programs.
278 =item Win32::CreateFile(FILE)
280 Creates the FILE and returns a true value on success. Check $^E on
281 failure for extended error information.
283 FILE may contain Unicode characters outside the system codepage. Once
284 the file has been created you can use Win32::GetANSIPathName() to get
285 a name that can be passed to system calls and external programs.
287 =item Win32::DomainName()
289 [CORE] Returns the name of the Microsoft Network domain or workgroup
290 that the owner of the current perl process is logged into. The
291 "Workstation" service must be running to determine this
292 information. This function does B<not> work on Windows 9x.
294 =item Win32::ExpandEnvironmentStrings(STRING)
296 Takes STRING and replaces all referenced environment variable
297 names with their defined values. References to environment variables
298 take the form C<%VariableName%>. Case is ignored when looking up the
299 VariableName in the environment. If the variable is not found then the
300 original C<%VariableName%> text is retained. Has the same effect
303 $string =~ s/%([^%]*)%/$ENV{$1} || "%$1%"/eg
305 However, this function may return a Unicode string if the environment
306 variable being expanded hasn't been assigned to via %ENV. Access
307 to %ENV is currently always using byte semantics.
309 =item Win32::FormatMessage(ERRORCODE)
311 [CORE] Converts the supplied Win32 error number (e.g. returned by
312 Win32::GetLastError()) to a descriptive string. Analogous to the
313 perror() standard-C library function. Note that C<$^E> used
314 in a string context has much the same effect.
316 C:\> perl -e "$^E = 26; print $^E;"
317 The specified disk or diskette cannot be accessed
319 =item Win32::FsType()
321 [CORE] Returns the name of the filesystem of the currently active
322 drive (like 'FAT' or 'NTFS'). In list context it returns three values:
323 (FSTYPE, FLAGS, MAXCOMPLEN). FSTYPE is the filesystem type as
324 before. FLAGS is a combination of values of the following table:
326 0x00000001 supports case-sensitive filenames
327 0x00000002 preserves the case of filenames
328 0x00000004 supports Unicode in filenames
329 0x00000008 preserves and enforces ACLs
330 0x00000010 supports file-based compression
331 0x00000020 supports disk quotas
332 0x00000040 supports sparse files
333 0x00000080 supports reparse points
334 0x00000100 supports remote storage
335 0x00008000 is a compressed volume (e.g. DoubleSpace)
336 0x00010000 supports object identifiers
337 0x00020000 supports the Encrypted File System (EFS)
339 MAXCOMPLEN is the maximum length of a filename component (the part
340 between two backslashes) on this file system.
342 =item Win32::FreeLibrary(HANDLE)
344 Unloads a previously loaded dynamic-link library. The HANDLE is
345 no longer valid after this call. See L<LoadLibrary|Win32::LoadLibrary(LIBNAME)>
346 for information on dynamically loading a library.
348 =item Win32::GetANSIPathName(FILENAME)
350 Returns an ANSI version of FILENAME. This may be the short name
351 if the long name cannot be represented in the system codepage.
353 While not currently implemented, it is possible that in the future
354 this function will convert only parts of the path to FILENAME to a
357 If FILENAME doesn't exist on the filesystem, or if the filesystem
358 doesn't support short ANSI filenames, then this function will
359 translate the Unicode name into the system codepage using replacement
362 =item Win32::GetArchName()
364 Use of this function is deprecated. It is equivalent with
365 $ENV{PROCESSOR_ARCHITECTURE}. This might not work on Win9X.
367 =item Win32::GetChipName()
369 Returns the processor type: 386, 486 or 586 for Intel processors,
370 21064 for the Alpha chip.
372 =item Win32::GetCwd()
374 [CORE] Returns the current active drive and directory. This function
375 does not return a UNC path, since the functionality required for such
376 a feature is not available under Windows 95.
378 If supported by the core Perl version, this function will return an
379 ANSI path name for the current directory if the long pathname cannot
380 be represented in the system codepage.
382 =item Win32::GetCurrentProcessId()
384 Returns the process identifier of the current process. Until the
385 process terminates, the process identifier uniquely identifies the
386 process throughout the system.
388 The current process identifier is normally also available via the
389 predefined $$ variable. Under fork() emulation however $$ may contain
390 a pseudo-process identifier that is only meaningful to the Perl
391 kill(), wait() and waitpid() functions. The
392 Win32::GetCurrentProcessId() function will always return the regular
393 Windows process id, even when called from inside a pseudo-process.
395 =item Win32::GetCurrentThreadId()
397 Returns the thread identifier of the calling thread. Until the thread
398 terminates, the thread identifier uniquely identifies the thread
399 throughout the system.
401 =item Win32::GetFileVersion(FILENAME)
403 Returns the file version number from the VERSIONINFO resource of
404 the executable file or DLL. This is a tuple of four 16 bit numbers.
405 In list context these four numbers will be returned. In scalar context
406 they are concatenated into a string, separated by dots.
408 =item Win32::GetFolderPath(FOLDER [, CREATE])
410 Returns the full pathname of one of the Windows special folders.
411 The folder will be created if it doesn't exist and the optional CREATE
412 argument is true. The following FOLDER constants are defined by the
413 Win32 module, but only exported on demand:
418 CSIDL_COMMON_ADMINTOOLS
420 CSIDL_COMMON_DESKTOPDIRECTORY
421 CSIDL_COMMON_DOCUMENTS
422 CSIDL_COMMON_FAVORITES
424 CSIDL_COMMON_PICTURES
425 CSIDL_COMMON_PROGRAMS
426 CSIDL_COMMON_STARTMENU
428 CSIDL_COMMON_TEMPLATES
432 CSIDL_DESKTOPDIRECTORY
447 CSIDL_PROGRAM_FILES_COMMON
450 CSIDL_RESOURCES_LOCALIZED
458 Note that not all folders are defined on all versions of Windows.
460 Please refer to the MSDN documentation of the CSIDL constants,
461 currently available at:
463 http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/enums/csidl.asp
465 This function will return an ANSI folder path if the long name cannot
466 be represented in the system codepage. Use Win32::GetLongPathName()
467 on the result of Win32::GetFolderPath() if you want the Unicode
468 version of the folder name.
470 =item Win32::GetFullPathName(FILENAME)
472 [CORE] GetFullPathName combines the FILENAME with the current drive
473 and directory name and returns a fully qualified (aka, absolute)
474 path name. In list context it returns two elements: (PATH, FILE) where
475 PATH is the complete pathname component (including trailing backslash)
476 and FILE is just the filename part. Note that no attempt is made to
477 convert 8.3 components in the supplied FILENAME to longnames or
478 vice-versa. Compare with Win32::GetShortPathName() and
479 Win32::GetLongPathName().
481 If supported by the core Perl version, this function will return an
482 ANSI path name if the full pathname cannot be represented in the
485 =item Win32::GetLastError()
487 [CORE] Returns the last error value generated by a call to a Win32 API
488 function. Note that C<$^E> used in a numeric context amounts to the
491 =item Win32::GetLongPathName(PATHNAME)
493 [CORE] Returns a representation of PATHNAME composed of longname
494 components (if any). The result may not necessarily be longer
495 than PATHNAME. No attempt is made to convert PATHNAME to the
496 absolute path. Compare with Win32::GetShortPathName() and
497 Win32::GetFullPathName().
499 This function may return the pathname in Unicode if it cannot be
500 represented in the system codepage. Use Win32::GetANSIPathName()
501 before passing the path to a system call or another program.
503 =item Win32::GetNextAvailDrive()
505 [CORE] Returns a string in the form of "<d>:" where <d> is the first
506 available drive letter.
508 =item Win32::GetOSVersion()
510 [CORE] Returns the list (STRING, MAJOR, MINOR, BUILD, ID), where the
511 elements are, respectively: An arbitrary descriptive string, the major
512 version number of the operating system, the minor version number, the
513 build number, and a digit indicating the actual operating system.
514 For the ID, the values are 0 for Win32s, 1 for Windows 9X/Me and 2 for
515 Windows NT/2000/XP/2003/Vista/2008/7. In scalar context it returns just
518 Currently known values for ID MAJOR and MINOR are as follows:
525 Windows NT 3.51 2 3 51
529 Windows Server 2003 2 5 2
531 Windows Server 2008 2 6 0
534 On Windows NT 4 SP6 and later this function returns the following
535 additional values: SPMAJOR, SPMINOR, SUITEMASK, PRODUCTTYPE.
537 The version numbers for Windows Vista and Windows Server 2008 are
538 identical; the PRODUCTTYPE field must be used to differentiate
541 SPMAJOR and SPMINOR are are the version numbers of the latest
542 installed service pack.
544 SUITEMASK is a bitfield identifying the product suites available on
545 the system. Known bits are:
547 VER_SUITE_SMALLBUSINESS 0x00000001
548 VER_SUITE_ENTERPRISE 0x00000002
549 VER_SUITE_BACKOFFICE 0x00000004
550 VER_SUITE_COMMUNICATIONS 0x00000008
551 VER_SUITE_TERMINAL 0x00000010
552 VER_SUITE_SMALLBUSINESS_RESTRICTED 0x00000020
553 VER_SUITE_EMBEDDEDNT 0x00000040
554 VER_SUITE_DATACENTER 0x00000080
555 VER_SUITE_SINGLEUSERTS 0x00000100
556 VER_SUITE_PERSONAL 0x00000200
557 VER_SUITE_BLADE 0x00000400
558 VER_SUITE_EMBEDDED_RESTRICTED 0x00000800
559 VER_SUITE_SECURITY_APPLIANCE 0x00001000
561 The VER_SUITE_xxx names are listed here to crossreference the Microsoft
562 documentation. The Win32 module does not provide symbolic names for these
565 PRODUCTTYPE provides additional information about the system. It should
566 be one of the following integer values:
568 1 - Workstation (NT 4, 2000 Pro, XP Home, XP Pro, Vista)
570 3 - Server (2000 Server, Server 2003, Server 2008)
572 Note that a server that is also a domain controller is reported as
573 PRODUCTTYPE 2 (Domaincontroller) and not PRODUCTTYPE 3 (Server).
575 =item Win32::GetOSName()
577 In scalar context returns the name of the Win32 operating system
578 being used. In list context returns a two element list of the OS name
579 and whatever edition information is known about the particular build
580 (for Win9X boxes) and whatever service packs have been installed.
581 The latter is roughly equivalent to the first item returned by
582 GetOSVersion() in list context.
584 Currently the possible values for the OS name are
599 This routine is just a simple interface into GetOSVersion(). More
600 specific or demanding situations should use that instead. Another
601 option would be to use POSIX::uname(), however the latter appears to
602 report only the OS family name and not the specific OS. In scalar
603 context it returns just the ID.
605 The name "WinXP/.Net" is used for historical reasons only, to maintain
606 backwards compatibility of the Win32 module. Windows .NET Server has
607 been renamed as Windows 2003 Server before final release and uses a
608 different major/minor version number than Windows XP.
610 Similarly the name "WinWin32s" should have been "Win32s" but has been
611 kept as-is for backwards compatibility reasons too.
613 =item Win32::GetShortPathName(PATHNAME)
615 [CORE] Returns a representation of PATHNAME that is composed of short
616 (8.3) path components where available. For path components where the
617 file system has not generated the short form the returned path will
618 use the long form, so this function might still for instance return a
619 path containing spaces. Returns C<undef> when the PATHNAME does not
620 exist. Compare with Win32::GetFullPathName() and
621 Win32::GetLongPathName().
623 =item Win32::GetProcAddress(INSTANCE, PROCNAME)
625 Returns the address of a function inside a loaded library. The
626 information about what you can do with this address has been lost in
627 the mist of time. Use the Win32::API module instead of this deprecated
630 =item Win32::GetTickCount()
632 [CORE] Returns the number of milliseconds elapsed since the last
633 system boot. Resolution is limited to system timer ticks (about 10ms
634 on WinNT and 55ms on Win9X).
636 =item Win32::GuidGen()
638 Creates a globally unique 128 bit integer that can be used as a
639 persistent identifier in a distributed setting. To a very high degree
640 of certainty this function returns a unique value. No other
641 invocation, on the same or any other system (networked or not), should
642 return the same value.
644 The return value is formatted according to OLE conventions, as groups
645 of hex digits with surrounding braces. For example:
647 {09531CF1-D0C7-4860-840C-1C8C8735E2AD}
649 =item Win32::InitiateSystemShutdown
651 (MACHINE, MESSAGE, TIMEOUT, FORCECLOSE, REBOOT)
653 Shutsdown the specified MACHINE, notifying users with the
654 supplied MESSAGE, within the specified TIMEOUT interval. Forces
655 closing of all documents without prompting the user if FORCECLOSE is
656 true, and reboots the machine if REBOOT is true. This function works
659 =item Win32::IsAdminUser()
661 Returns non zero if the account in whose security context the
662 current process/thread is running belongs to the local group of
663 Administrators in the built-in system domain; returns 0 if not.
664 On Windows Vista it will only return non-zero if the process is
665 actually running with elevated privileges. Returns C<undef>
666 and prints a warning if an error occurred. This function always
669 =item Win32::IsWinNT()
671 [CORE] Returns non zero if the Win32 subsystem is Windows NT.
673 =item Win32::IsWin95()
675 [CORE] Returns non zero if the Win32 subsystem is Windows 95.
677 =item Win32::LoadLibrary(LIBNAME)
679 Loads a dynamic link library into memory and returns its module
680 handle. This handle can be used with Win32::GetProcAddress() and
681 Win32::FreeLibrary(). This function is deprecated. Use the Win32::API
684 =item Win32::LoginName()
686 [CORE] Returns the username of the owner of the current perl process.
687 The return value may be a Unicode string.
689 =item Win32::LookupAccountName(SYSTEM, ACCOUNT, DOMAIN, SID, SIDTYPE)
691 Looks up ACCOUNT on SYSTEM and returns the domain name the SID and
694 =item Win32::LookupAccountSID(SYSTEM, SID, ACCOUNT, DOMAIN, SIDTYPE)
696 Looks up SID on SYSTEM and returns the account name, domain name,
699 =item Win32::MsgBox(MESSAGE [, FLAGS [, TITLE]])
701 Create a dialogbox containing MESSAGE. FLAGS specifies the
702 required icon and buttons according to the following table:
706 2 = Abort, Retry, and Ignore
707 3 = Yes, No and Cancel
711 MB_ICONSTOP "X" in a red circle
712 MB_ICONQUESTION question mark in a bubble
713 MB_ICONEXCLAMATION exclamation mark in a yellow triangle
714 MB_ICONINFORMATION "i" in a bubble
716 TITLE specifies an optional window title. The default is "Perl".
718 The function returns the menu id of the selected push button:
730 =item Win32::NodeName()
732 [CORE] Returns the Microsoft Network node-name of the current machine.
734 =item Win32::OutputDebugString(STRING)
736 Sends a string to the application or system debugger for display.
737 The function does nothing if there is no active debugger.
739 Alternatively one can use the I<Debug Viewer> application to
740 watch the OutputDebugString() output:
742 http://www.microsoft.com/technet/sysinternals/utilities/debugview.mspx
744 =item Win32::RegisterServer(LIBRARYNAME)
746 Loads the DLL LIBRARYNAME and calls the function DllRegisterServer.
748 =item Win32::SetChildShowWindow(SHOWWINDOW)
750 [CORE] Sets the I<ShowMode> of child processes started by system().
751 By default system() will create a new console window for child
752 processes if Perl itself is not running from a console. Calling
753 SetChildShowWindow(0) will make these new console windows invisible.
754 Calling SetChildShowWindow() without arguments reverts system() to the
755 default behavior. The return value of SetChildShowWindow() is the
756 previous setting or C<undef>.
758 The following symbolic constants for SHOWWINDOW are available
759 (but not exported) from the Win32 module: SW_HIDE, SW_SHOWNORMAL,
760 SW_SHOWMINIMIZED, SW_SHOWMAXIMIZED and SW_SHOWNOACTIVATE.
762 =item Win32::SetCwd(NEWDIRECTORY)
764 [CORE] Sets the current active drive and directory. This function does not
765 work with UNC paths, since the functionality required to required for
766 such a feature is not available under Windows 95.
768 =item Win32::SetLastError(ERROR)
770 [CORE] Sets the value of the last error encountered to ERROR. This is
771 that value that will be returned by the Win32::GetLastError()
774 =item Win32::Sleep(TIME)
776 [CORE] Pauses for TIME milliseconds. The timeslices are made available
777 to other processes and threads.
779 =item Win32::Spawn(COMMAND, ARGS, PID)
781 [CORE] Spawns a new process using the supplied COMMAND, passing in
782 arguments in the string ARGS. The pid of the new process is stored in
783 PID. This function is deprecated. Please use the Win32::Process module
786 =item Win32::UnregisterServer(LIBRARYNAME)
788 Loads the DLL LIBRARYNAME and calls the function