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283 lines
9.2 KiB
283 lines
9.2 KiB
=head1 NAME
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Win32 - Interfaces to some Win32 API Functions
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=head1 DESCRIPTION
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Perl on Win32 contains several functions to access Win32 APIs. Some
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are included in Perl itself (on Win32) and some are only available
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after explicitly requesting the Win32 module with:
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use Win32;
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The builtin functions are marked as [CORE] and the other ones
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as [EXT] in the following alphabetical listing. The C<Win32> module
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is not part of the Perl source distribution; it is distributed in
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the libwin32 bundle of Win32::* modules on CPAN. The module is
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already preinstalled in binary distributions like ActivePerl.
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=head2 Alphabetical Listing of Win32 Functions
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=over
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=item Win32::AbortSystemShutdown(MACHINE)
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[EXT] Aborts a system shutdown (started by the
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InitiateSystemShutdown function) on the specified MACHINE.
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=item Win32::BuildNumber()
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[CORE] Returns the ActivePerl build number. This function is
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only available in the ActivePerl binary distribution.
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=item Win32::CopyFile(FROM, TO, OVERWRITE)
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The Win32::CopyFile() function copies an existing file to a new file. All
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file information like creation time and file attributes will be copied to
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the new file. However it will B<not> copy the security information. If the
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destination file already exists it will only be overwritten when the
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OVERWRITE parameter is true. But even this will not overwrite a read-only
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file; you have to unlink() it first yourself.
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=item Win32::DomainName()
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[CORE] Returns the name of the Microsoft Network domain that the
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owner of the current perl process is logged into.
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=item Win32::ExpandEnvironmentStrings(STRING)
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[EXT] Takes STRING and replaces all referenced environment variable
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names with their defined values. References to environment variables
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take the form C<%VariableName%>. Case is ignored when looking up the
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VariableName in the environment. If the variable is not found then the
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original C<%VariableName%> text is retained. Has the same effect
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as the following:
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$string =~ s/%([^%]*)%/$ENV{$1} || "%$1%"/eg
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=item Win32::FormatMessage(ERRORCODE)
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[CORE] Converts the supplied Win32 error number (e.g. returned by
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Win32::GetLastError()) to a descriptive string. Analogous to the
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perror() standard-C library function. Note that C<$^E> used
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in a string context has much the same effect.
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C:\> perl -e "$^E = 26; print $^E;"
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The specified disk or diskette cannot be accessed
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=item Win32::FsType()
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[CORE] Returns the name of the filesystem of the currently active
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drive (like 'FAT' or 'NTFS'). In list context it returns three values:
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(FSTYPE, FLAGS, MAXCOMPLEN). FSTYPE is the filesystem type as
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before. FLAGS is a combination of values of the following table:
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0x00000001 supports case-sensitive filenames
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0x00000002 preserves the case of filenames
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0x00000004 supports Unicode in filenames
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0x00000008 preserves and enforces ACLs
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0x00000010 supports file-based compression
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0x00000020 supports disk quotas
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0x00000040 supports sparse files
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0x00000080 supports reparse points
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0x00000100 supports remote storage
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0x00008000 is a compressed volume (e.g. DoubleSpace)
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0x00010000 supports object identifiers
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0x00020000 supports the Encrypted File System (EFS)
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MAXCOMPLEN is the maximum length of a filename component (the part
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between two backslashes) on this file system.
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=item Win32::FreeLibrary(HANDLE)
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[EXT] Unloads a previously loaded dynamic-link library. The HANDLE is
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no longer valid after this call. See L<LoadLibrary> for information on
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dynamically loading a library.
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=item Win32::GetArchName()
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[EXT] Use of this function is deprecated. It is equivalent with
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$ENV{PROCESSOR_ARCHITECTURE}. This might not work on Win9X.
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=item Win32::GetChipName()
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[EXT] Returns the processor type: 386, 486 or 586 for Intel processors,
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21064 for the Alpha chip.
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=item Win32::GetCwd()
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[CORE] Returns the current active drive and directory. This function
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does not return a UNC path, since the functionality required for such
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a feature is not available under Windows 95.
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=item Win32::GetFullPathName(FILENAME)
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[CORE] GetFullPathName combines the FILENAME with the current drive
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and directory name and returns a fully qualified (aka, absolute)
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path name. In list context it returns two elements: (PATH, FILE) where
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PATH is the complete pathname component (including trailing backslash)
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and FILE is just the filename part. Note that no attempt is made to
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convert 8.3 components in the supplied FILENAME to longnames or
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vice-versa. Compare with Win32::GetShortPathName and
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Win32::GetLongPathName.
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This function has been added for Perl 5.006.
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=item Win32::GetLastError()
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[CORE] Returns the last error value generated by a call to a Win32 API
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function. Note that C<$^E> used in a numeric context amounts to the
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same value.
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=item Win32::GetLongPathName(PATHNAME)
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[CORE] Returns a representaion of PATHNAME comprised of longname
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compnents (if any). The result may not necessarily be longer
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than PATHNAME. No attempt is made to convert PATHNAME to the
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absolute path. Compare with Win32::GetShortPathName and
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Win32::GetFullPathName.
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This function has been added for Perl 5.006.
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=item Win32::GetNextAvailDrive()
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[CORE] Returns a string in the form of "<d>:" where <d> is the first
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available drive letter.
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=item Win32::GetOSVersion()
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[CORE] Returns the array (STRING, MAJOR, MINOR, BUILD, ID), where
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the elements are, respectively: An arbitrary descriptive string, the
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major version number of the operating system, the minor version
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number, the build number, and a digit indicating the actual operating
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system. For ID, the values are 0 for Win32s, 1 for Windows 9X and 2
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for Windows NT. In scalar context it returns just the ID.
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=item Win32::GetShortPathName(PATHNAME)
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[CORE] Returns a representation of PATHNAME comprised only of
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short (8.3) path components. The result may not necessarily be
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shorter than PATHNAME. Compare with Win32::GetFullPathName and
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Win32::GetLongPathName.
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=item Win32::GetProcAddress(INSTANCE, PROCNAME)
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[EXT] Returns the address of a function inside a loaded library. The
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information about what you can do with this address has been lost in
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the mist of time. Use the Win32::API module instead of this deprecated
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function.
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=item Win32::GetTickCount()
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[CORE] Returns the number of milliseconds elapsed since the last
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system boot. Resolution is limited to system timer ticks (about 10ms
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on WinNT and 55ms on Win9X).
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=item Win32::InitiateSystemShutdown(MACHINE, MESSAGE, TIMEOUT, FORCECLOSE, REBOOT)
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[EXT] Shutsdown the specified MACHINE, notifying users with the
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supplied MESSAGE, within the specified TIMEOUT interval. Forces
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closing of all documents without prompting the user if FORCECLOSE is
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true, and reboots the machine if REBOOT is true. This function works
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only on WinNT.
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=item Win32::IsWinNT()
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[CORE] Returns non zero if the Win32 subsystem is Windows NT.
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=item Win32::IsWin95()
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[CORE] Returns non zero if the Win32 subsystem is Windows 95.
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=item Win32::LoadLibrary(LIBNAME)
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[EXT] Loads a dynamic link library into memory and returns its module
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handle. This handle can be used with Win32::GetProcAddress and
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Win32::FreeLibrary. This function is deprecated. Use the Win32::API
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module instead.
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=item Win32::LoginName()
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[CORE] Returns the username of the owner of the current perl process.
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=item Win32::LookupAccountName(SYSTEM, ACCOUNT, DOMAIN, SID, SIDTYPE)
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[EXT] Looks up ACCOUNT on SYSTEM and returns the domain name the SID and
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the SID type.
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=item Win32::LookupAccountSID(SYSTEM, SID, ACCOUNT, DOMAIN, SIDTYPE)
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[EXT] ]Looks up SID on SYSTEM and returns the account name, domain name,
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and the SID type.
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=item Win32::MsgBox(MESSAGE [, FLAGS [, TITLE]])
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[EXT] Create a dialogbox containing MESSAGE. FLAGS specifies the
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required icon and buttons according to the following table:
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0 = OK
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1 = OK and Cancel
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2 = Abort, Retry, and Ignore
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3 = Yes, No and Cancel
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4 = Yes and No
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5 = Retry and Cancel
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MB_ICONSTOP "X" in a red circle
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MB_ICONQUESTION question mark in a bubble
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MB_ICONEXCLAMATION exclamation mark in a yellow triangle
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MB_ICONINFORMATION "i" in a bubble
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TITLE specifies an optional window title. The default is "Perl".
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The function returns the menu id of the selected push button:
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0 Error
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1 OK
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2 Cancel
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3 Abort
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4 Retry
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5 Ignore
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6 Yes
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7 No
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=item Win32::NodeName()
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[CORE] Returns the Microsoft Network node-name of the current machine.
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=item Win32::RegisterServer(LIBRARYNAME)
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[EXT] Loads the DLL LIBRARYNAME and calls the function DllRegisterServer.
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=item Win32::SetCwd(NEWDIRECTORY)
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[CORE] Sets the current active drive and directory. This function does not
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work with UNC paths, since the functionality required to required for
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such a feature is not available under Windows 95.
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=item Win32::SetLastError(ERROR)
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[CORE] Sets the value of the last error encountered to ERROR. This is
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that value that will be returned by the Win32::GetLastError()
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function. This functions has been added for Perl 5.006.
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=item Win32::Sleep(TIME)
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[CORE] Pauses for TIME milliseconds. The timeslices are made available
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to other processes and threads.
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=item Win32::Spawn(COMMAND, ARGS, PID)
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[CORE] Spawns a new process using the supplied COMMAND, passing in
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arguments in the string ARGS. The pid of the new process is stored in
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PID. This function is deprecated. Please use the Win32::Process module
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instead.
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=item Win32::UnregisterServer(LIBRARYNAME)
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[EXT] Loads the DLL LIBRARYNAME and calls the function
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DllUnregisterServer.
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=back
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=cut
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