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1 | =head1 NAME |
2 | |
3 | Win32 - Interfaces to some Win32 API Functions |
4 | |
5 | =head1 DESCRIPTION |
6 | |
7 | Perl on Win32 contains several functions to access Win32 APIs. Some |
8 | are included in Perl itself (on Win32) and some are only available |
9 | after explicitly requesting the Win32 module with: |
10 | |
11 | use Win32; |
12 | |
13 | The builtin functions are marked as [CORE] and the other ones |
14 | as [EXT] in the following alphabetical listing. The C<Win32> module |
15 | is not part of the Perl source distribution; it is distributed in |
16 | the libwin32 bundle of Win32::* modules on CPAN. The module is |
17 | already preinstalled in binary distributions like ActivePerl. |
18 | |
19 | =head2 Alphabetical Listing of Win32 Functions |
20 | |
21 | =over |
22 | |
23 | =item Win32::AbortSystemShutdown(MACHINE) |
24 | |
25 | [EXT] Aborts a system shutdown (started by the |
26 | InitiateSystemShutdown function) on the specified MACHINE. |
27 | |
28 | =item Win32::BuildNumber() |
29 | |
30 | [CORE] Returns the ActivePerl build number. This function is |
31 | only available in the ActivePerl binary distribution. |
32 | |
33 | =item Win32::CopyFile(FROM, TO, OVERWRITE) |
34 | |
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35 | [CORE] The Win32::CopyFile() function copies an existing file to a new |
36 | file. All file information like creation time and file attributes will |
37 | be copied to the new file. However it will B<not> copy the security |
38 | information. If the destination file already exists it will only be |
39 | overwritten when the OVERWRITE parameter is true. But even this will |
40 | not overwrite a read-only file; you have to unlink() it first |
41 | yourself. |
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42 | |
43 | =item Win32::DomainName() |
44 | |
45 | [CORE] Returns the name of the Microsoft Network domain that the |
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46 | owner of the current perl process is logged into. This function does |
47 | B<not> work on Windows 9x. |
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48 | |
49 | =item Win32::ExpandEnvironmentStrings(STRING) |
50 | |
51 | [EXT] Takes STRING and replaces all referenced environment variable |
52 | names with their defined values. References to environment variables |
53 | take the form C<%VariableName%>. Case is ignored when looking up the |
54 | VariableName in the environment. If the variable is not found then the |
55 | original C<%VariableName%> text is retained. Has the same effect |
56 | as the following: |
57 | |
58 | $string =~ s/%([^%]*)%/$ENV{$1} || "%$1%"/eg |
59 | |
60 | =item Win32::FormatMessage(ERRORCODE) |
61 | |
62 | [CORE] Converts the supplied Win32 error number (e.g. returned by |
63 | Win32::GetLastError()) to a descriptive string. Analogous to the |
64 | perror() standard-C library function. Note that C<$^E> used |
65 | in a string context has much the same effect. |
66 | |
67 | C:\> perl -e "$^E = 26; print $^E;" |
68 | The specified disk or diskette cannot be accessed |
69 | |
70 | =item Win32::FsType() |
71 | |
72 | [CORE] Returns the name of the filesystem of the currently active |
73 | drive (like 'FAT' or 'NTFS'). In list context it returns three values: |
74 | (FSTYPE, FLAGS, MAXCOMPLEN). FSTYPE is the filesystem type as |
75 | before. FLAGS is a combination of values of the following table: |
76 | |
77 | 0x00000001 supports case-sensitive filenames |
78 | 0x00000002 preserves the case of filenames |
79 | 0x00000004 supports Unicode in filenames |
80 | 0x00000008 preserves and enforces ACLs |
81 | 0x00000010 supports file-based compression |
82 | 0x00000020 supports disk quotas |
83 | 0x00000040 supports sparse files |
84 | 0x00000080 supports reparse points |
85 | 0x00000100 supports remote storage |
86 | 0x00008000 is a compressed volume (e.g. DoubleSpace) |
87 | 0x00010000 supports object identifiers |
88 | 0x00020000 supports the Encrypted File System (EFS) |
89 | |
90 | MAXCOMPLEN is the maximum length of a filename component (the part |
91 | between two backslashes) on this file system. |
92 | |
93 | =item Win32::FreeLibrary(HANDLE) |
94 | |
95 | [EXT] Unloads a previously loaded dynamic-link library. The HANDLE is |
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96 | no longer valid after this call. See L<LoadLibrary|Win32::LoadLibrary(LIBNAME)> |
97 | for information on dynamically loading a library. |
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98 | |
99 | =item Win32::GetArchName() |
100 | |
101 | [EXT] Use of this function is deprecated. It is equivalent with |
102 | $ENV{PROCESSOR_ARCHITECTURE}. This might not work on Win9X. |
103 | |
104 | =item Win32::GetChipName() |
105 | |
106 | [EXT] Returns the processor type: 386, 486 or 586 for Intel processors, |
107 | 21064 for the Alpha chip. |
108 | |
109 | =item Win32::GetCwd() |
110 | |
111 | [CORE] Returns the current active drive and directory. This function |
112 | does not return a UNC path, since the functionality required for such |
113 | a feature is not available under Windows 95. |
114 | |
115 | =item Win32::GetFullPathName(FILENAME) |
116 | |
117 | [CORE] GetFullPathName combines the FILENAME with the current drive |
118 | and directory name and returns a fully qualified (aka, absolute) |
119 | path name. In list context it returns two elements: (PATH, FILE) where |
120 | PATH is the complete pathname component (including trailing backslash) |
121 | and FILE is just the filename part. Note that no attempt is made to |
122 | convert 8.3 components in the supplied FILENAME to longnames or |
123 | vice-versa. Compare with Win32::GetShortPathName and |
124 | Win32::GetLongPathName. |
125 | |
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126 | This function has been added for Perl 5.6. |
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127 | |
128 | =item Win32::GetLastError() |
129 | |
130 | [CORE] Returns the last error value generated by a call to a Win32 API |
131 | function. Note that C<$^E> used in a numeric context amounts to the |
132 | same value. |
133 | |
134 | =item Win32::GetLongPathName(PATHNAME) |
135 | |
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136 | [CORE] Returns a representation of PATHNAME composed of longname |
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137 | components (if any). The result may not necessarily be longer |
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138 | than PATHNAME. No attempt is made to convert PATHNAME to the |
139 | absolute path. Compare with Win32::GetShortPathName and |
140 | Win32::GetFullPathName. |
141 | |
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142 | This function has been added for Perl 5.6. |
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143 | |
144 | =item Win32::GetNextAvailDrive() |
145 | |
146 | [CORE] Returns a string in the form of "<d>:" where <d> is the first |
147 | available drive letter. |
148 | |
149 | =item Win32::GetOSVersion() |
150 | |
151 | [CORE] Returns the array (STRING, MAJOR, MINOR, BUILD, ID), where |
152 | the elements are, respectively: An arbitrary descriptive string, the |
153 | major version number of the operating system, the minor version |
154 | number, the build number, and a digit indicating the actual operating |
155 | system. For ID, the values are 0 for Win32s, 1 for Windows 9X and 2 |
156 | for Windows NT. In scalar context it returns just the ID. |
157 | |
158 | =item Win32::GetShortPathName(PATHNAME) |
159 | |
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160 | [CORE] Returns a representation of PATHNAME composed only of |
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161 | short (8.3) path components. The result may not necessarily be |
162 | shorter than PATHNAME. Compare with Win32::GetFullPathName and |
163 | Win32::GetLongPathName. |
164 | |
165 | =item Win32::GetProcAddress(INSTANCE, PROCNAME) |
166 | |
167 | [EXT] Returns the address of a function inside a loaded library. The |
168 | information about what you can do with this address has been lost in |
169 | the mist of time. Use the Win32::API module instead of this deprecated |
170 | function. |
171 | |
172 | =item Win32::GetTickCount() |
173 | |
174 | [CORE] Returns the number of milliseconds elapsed since the last |
175 | system boot. Resolution is limited to system timer ticks (about 10ms |
176 | on WinNT and 55ms on Win9X). |
177 | |
178 | =item Win32::InitiateSystemShutdown(MACHINE, MESSAGE, TIMEOUT, FORCECLOSE, REBOOT) |
179 | |
180 | [EXT] Shutsdown the specified MACHINE, notifying users with the |
181 | supplied MESSAGE, within the specified TIMEOUT interval. Forces |
182 | closing of all documents without prompting the user if FORCECLOSE is |
183 | true, and reboots the machine if REBOOT is true. This function works |
184 | only on WinNT. |
185 | |
186 | =item Win32::IsWinNT() |
187 | |
188 | [CORE] Returns non zero if the Win32 subsystem is Windows NT. |
189 | |
190 | =item Win32::IsWin95() |
191 | |
192 | [CORE] Returns non zero if the Win32 subsystem is Windows 95. |
193 | |
194 | =item Win32::LoadLibrary(LIBNAME) |
195 | |
196 | [EXT] Loads a dynamic link library into memory and returns its module |
197 | handle. This handle can be used with Win32::GetProcAddress and |
198 | Win32::FreeLibrary. This function is deprecated. Use the Win32::API |
199 | module instead. |
200 | |
201 | =item Win32::LoginName() |
202 | |
203 | [CORE] Returns the username of the owner of the current perl process. |
204 | |
205 | =item Win32::LookupAccountName(SYSTEM, ACCOUNT, DOMAIN, SID, SIDTYPE) |
206 | |
207 | [EXT] Looks up ACCOUNT on SYSTEM and returns the domain name the SID and |
208 | the SID type. |
209 | |
210 | =item Win32::LookupAccountSID(SYSTEM, SID, ACCOUNT, DOMAIN, SIDTYPE) |
211 | |
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212 | [EXT] Looks up SID on SYSTEM and returns the account name, domain name, |
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213 | and the SID type. |
214 | |
215 | =item Win32::MsgBox(MESSAGE [, FLAGS [, TITLE]]) |
216 | |
217 | [EXT] Create a dialogbox containing MESSAGE. FLAGS specifies the |
218 | required icon and buttons according to the following table: |
219 | |
220 | 0 = OK |
221 | 1 = OK and Cancel |
222 | 2 = Abort, Retry, and Ignore |
223 | 3 = Yes, No and Cancel |
224 | 4 = Yes and No |
225 | 5 = Retry and Cancel |
226 | |
227 | MB_ICONSTOP "X" in a red circle |
228 | MB_ICONQUESTION question mark in a bubble |
229 | MB_ICONEXCLAMATION exclamation mark in a yellow triangle |
230 | MB_ICONINFORMATION "i" in a bubble |
231 | |
232 | TITLE specifies an optional window title. The default is "Perl". |
233 | |
234 | The function returns the menu id of the selected push button: |
235 | |
236 | 0 Error |
237 | |
238 | 1 OK |
239 | 2 Cancel |
240 | 3 Abort |
241 | 4 Retry |
242 | 5 Ignore |
243 | 6 Yes |
244 | 7 No |
245 | |
246 | =item Win32::NodeName() |
247 | |
248 | [CORE] Returns the Microsoft Network node-name of the current machine. |
249 | |
250 | =item Win32::RegisterServer(LIBRARYNAME) |
251 | |
252 | [EXT] Loads the DLL LIBRARYNAME and calls the function DllRegisterServer. |
253 | |
254 | =item Win32::SetCwd(NEWDIRECTORY) |
255 | |
256 | [CORE] Sets the current active drive and directory. This function does not |
257 | work with UNC paths, since the functionality required to required for |
258 | such a feature is not available under Windows 95. |
259 | |
260 | =item Win32::SetLastError(ERROR) |
261 | |
262 | [CORE] Sets the value of the last error encountered to ERROR. This is |
263 | that value that will be returned by the Win32::GetLastError() |
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264 | function. This functions has been added for Perl 5.6. |
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265 | |
266 | =item Win32::Sleep(TIME) |
267 | |
268 | [CORE] Pauses for TIME milliseconds. The timeslices are made available |
269 | to other processes and threads. |
270 | |
271 | =item Win32::Spawn(COMMAND, ARGS, PID) |
272 | |
273 | [CORE] Spawns a new process using the supplied COMMAND, passing in |
274 | arguments in the string ARGS. The pid of the new process is stored in |
275 | PID. This function is deprecated. Please use the Win32::Process module |
276 | instead. |
277 | |
278 | =item Win32::UnregisterServer(LIBRARYNAME) |
279 | |
280 | [EXT] Loads the DLL LIBRARYNAME and calls the function |
281 | DllUnregisterServer. |
282 | |
283 | =back |
284 | |
285 | =cut |