1 /* Utility routines for XEmacs on Windows 9x, NT and Cygwin.
2 Copyright (C) 2000 Ben Wing.
4 This file is part of XEmacs.
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to the Free
18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include "syssignal.h"
28 #include "syswindows.h"
30 typedef BOOL (WINAPI *pfSwitchToThread_t) (VOID);
31 pfSwitchToThread_t xSwitchToThread;
33 typedef HKL (WINAPI *pfGetKeyboardLayout_t) (DWORD);
34 pfGetKeyboardLayout_t xGetKeyboardLayout;
35 typedef BOOL (WINAPI *pfSetMenuDefaultItem_t) (HMENU, UINT, UINT);
36 pfSetMenuDefaultItem_t xSetMenuDefaultItem;
37 typedef BOOL (WINAPI *pfInsertMenuItemA_t)
38 (HMENU, UINT, BOOL, LPCMENUITEMINFOA);
39 pfInsertMenuItemA_t xInsertMenuItemA;
40 typedef BOOL (WINAPI *pfInsertMenuItemW_t)
41 (HMENU, UINT, BOOL, LPCMENUITEMINFOW);
42 pfInsertMenuItemW_t xInsertMenuItemW;
43 typedef HANDLE (WINAPI *pfLoadImageA_t)
44 (HINSTANCE, LPCSTR, UINT, int, int, UINT);
45 pfLoadImageA_t xLoadImageA;
46 typedef HANDLE (WINAPI *pfLoadImageW_t)
47 (HINSTANCE, LPCWSTR, UINT, int, int, UINT);
48 pfLoadImageW_t xLoadImageW;
49 typedef ATOM (WINAPI *pfRegisterClassExA_t) (CONST WNDCLASSEXA *);
50 pfRegisterClassExA_t xRegisterClassExA;
51 typedef ATOM (WINAPI *pfRegisterClassExW_t) (CONST WNDCLASSEXW *);
52 pfRegisterClassExW_t xRegisterClassExW;
54 typedef int (WINAPI *pfEnumFontFamiliesExA_t)
55 (HDC, LPLOGFONTA, FONTENUMPROCA, LPARAM, DWORD);
56 pfEnumFontFamiliesExA_t xEnumFontFamiliesExA;
57 typedef int (WINAPI *pfEnumFontFamiliesExW_t)
58 (HDC, LPLOGFONTW, FONTENUMPROCW, LPARAM, DWORD);
59 pfEnumFontFamiliesExW_t xEnumFontFamiliesExW;
61 typedef DWORD (WINAPI *pfSHGetFileInfoA_t)
62 (LPCSTR, DWORD, SHFILEINFOA FAR *, UINT, UINT);
63 pfSHGetFileInfoA_t xSHGetFileInfoA;
64 typedef DWORD (WINAPI *pfSHGetFileInfoW_t)
65 (LPCWSTR, DWORD, SHFILEINFOW FAR *, UINT, UINT);
66 pfSHGetFileInfoW_t xSHGetFileInfoW;
69 tstr_to_local_file_format (Extbyte *pathout)
74 EXTERNAL_TO_C_STRING (pathout, ttlff, Qmswindows_tstr);
75 WIN32_TO_LOCAL_FILE_FORMAT (ttlff, in);
81 init_potentially_nonexistent_functions (void)
83 HMODULE h_kernel = GetModuleHandle ("kernel32");
84 HMODULE h_user = GetModuleHandle ("user32");
85 HMODULE h_gdi = GetModuleHandle ("gdi32");
86 HMODULE h_shell = GetModuleHandle ("shell32");
91 (pfSwitchToThread_t) GetProcAddress (h_kernel, "SwitchToThread");
97 (pfGetKeyboardLayout_t) GetProcAddress (h_user, "GetKeyboardLayout");
99 (pfSetMenuDefaultItem_t) GetProcAddress (h_user, "SetMenuDefaultItem");
101 (pfInsertMenuItemA_t) GetProcAddress (h_user, "InsertMenuItemA");
103 (pfInsertMenuItemW_t) GetProcAddress (h_user, "InsertMenuItemW");
105 (pfLoadImageA_t) GetProcAddress (h_user, "LoadImageA");
107 (pfLoadImageW_t) GetProcAddress (h_user, "LoadImageW");
109 (pfRegisterClassExA_t) GetProcAddress (h_user, "RegisterClassExA");
111 (pfRegisterClassExW_t) GetProcAddress (h_user, "RegisterClassExW");
116 xEnumFontFamiliesExA =
117 (pfEnumFontFamiliesExA_t) GetProcAddress (h_gdi, "EnumFontFamiliesExA");
118 xEnumFontFamiliesExW =
119 (pfEnumFontFamiliesExW_t) GetProcAddress (h_gdi, "EnumFontFamiliesExW");
125 (pfSHGetFileInfoA_t) GetProcAddress (h_shell, "SHGetFileInfoA");
127 (pfSHGetFileInfoW_t) GetProcAddress (h_shell, "SHGetFileInfoW");
131 DEFUN ("mswindows-shell-execute", Fmswindows_shell_execute, 2, 4, 0, /*
132 Get Windows to perform OPERATION on DOCUMENT.
133 This is a wrapper around the ShellExecute system function, which
134 invokes the application registered to handle OPERATION for DOCUMENT.
135 OPERATION is typically \"open\", \"print\" or \"explore\" (but can be
136 nil for the default action), and DOCUMENT is typically the name of a
137 document file or URL, but can also be a program executable to run or
138 a directory to open in the Windows Explorer.
140 If DOCUMENT is a program executable, PARAMETERS can be a string
141 containing command line parameters, but otherwise should be nil.
143 SHOW-FLAG can be used to control whether the invoked application is hidden
144 or minimized. If SHOW-FLAG is nil, the application is displayed normally,
145 otherwise it is an integer representing a ShowWindow flag:
152 (operation, document, parameters, show_flag))
154 /* Encode filename and current directory. */
155 Lisp_Object current_dir = Ffile_name_directory (document);
158 char* fname1, *fname2;
163 struct gcpro gcpro1, gcpro2;
165 CHECK_STRING (document);
167 if (NILP (current_dir))
168 current_dir = current_buffer->directory;
170 GCPRO2 (current_dir, document);
172 /* Use mule and cygwin-safe APIs top get at file data. */
173 if (STRINGP (current_dir))
175 LOCAL_TO_WIN32_FILE_FORMAT (current_dir, path);
178 if (STRINGP (document))
180 doc = XSTRING_DATA (document);
182 if ((fname1 = strchr (doc, ':')) != NULL
183 && *++fname1 == '/' && *++fname1 == '/')
187 if (!(isalpha (fname1[0]) && (IS_DEVICE_SEP (fname1[1]))))
189 sz = cygwin_posix_to_win32_path_list_buf_size (fname1);
190 fname2 = alloca (sz + pos);
191 strncpy (fname2, doc, pos);
194 cygwin_posix_to_win32_path_list (fname1, fname2);
198 LOCAL_TO_WIN32_FILE_FORMAT (document, doc);
205 ret = (int) ShellExecute (NULL,
206 (STRINGP (operation) ?
207 XSTRING_DATA (operation) : NULL),
209 (STRINGP (parameters) ?
210 XSTRING_DATA (parameters) : NULL),
213 XINT (show_flag) : SW_SHOWDEFAULT));
218 if (ret == ERROR_FILE_NOT_FOUND)
219 signal_simple_error ("file not found", document);
220 else if (ret == ERROR_PATH_NOT_FOUND)
221 signal_simple_error ("path not found", current_dir);
222 else if (ret == ERROR_BAD_FORMAT)
223 signal_simple_error ("bad executable format", document);
225 error ("internal error");
231 DEFUN ("mswindows-cygwin-to-win32-path", Fmswindows_cygwin_to_win32_path, 1, 1, 0, /*
232 Get the cygwin environment to convert the Unix PATH to win32 format.
233 No expansion is performed, all conversion is done by the cygwin runtime.
241 /* There appears to be a bug in the cygwin conversion routines in
242 that they are not idempotent. */
243 p = XSTRING_DATA (path);
244 if (isalpha (p[0]) && (IS_DEVICE_SEP (p[1])))
247 /* Use mule and cygwin-safe APIs top get at file data. */
248 LOCAL_TO_WIN32_FILE_FORMAT (path, f);
249 return build_ext_string (f, Qnative);
254 /*--------------------------------------------------------------------*/
256 /*--------------------------------------------------------------------*/
258 /* setitimer() does not exist on native MS Windows, and appears broken
259 on Cygwin (random lockups when BROKEN_SIGIO is defined), so we
260 emulate in both cases by using multimedia timers. */
262 /* We emulate two timers, one for SIGALRM, another for SIGPROF.
264 itimerproc() function has an implementation limitation: it does
265 not allow to set *both* interval and period. If an attempt is
266 made to set both, and then they are unequal, the function
269 Minimum timer resolution on Win32 systems varies, and is greater
270 than or equal than 1 ms. The resolution is always wrapped not to
271 attempt to get below the system defined limit.
274 /* Timer precision, denominator of one fraction: for 100 ms
275 interval, request 10 ms precision
277 const int setitimer_helper_timer_prec = 10;
279 /* Last itimervals, as set by calls to setitimer */
280 static struct itimerval it_alarm;
281 static struct itimerval it_prof;
283 /* Timer IDs as returned by MM */
284 MMRESULT tid_alarm = 0;
285 MMRESULT tid_prof = 0;
288 setitimer_helper_proc (UINT uID, UINT uMsg, DWORD dwUser,
289 DWORD dw1, DWORD dw2)
291 /* Just raise the signal indicated by the dwUser parameter */
293 kill (getpid (), dwUser);
295 mswindows_raise (dwUser);
299 /* Divide time in ms specified by IT by DENOM. Return 1 ms
300 if division results in zero */
302 setitimer_helper_period (const struct itimerval* it, UINT denom)
304 static TIMECAPS time_caps;
307 const struct timeval* tv =
308 (it->it_value.tv_sec == 0 && it->it_value.tv_usec == 0)
309 ? &it->it_interval : &it->it_value;
311 /* Zero means stop timer */
312 if (tv->tv_sec == 0 && tv->tv_usec == 0)
315 /* Convert to ms and divide by denom */
316 res = (tv->tv_sec * 1000 + (tv->tv_usec + 500) / 1000) / denom;
318 /* Converge to minimum timer resolution */
319 if (time_caps.wPeriodMin == 0)
320 timeGetDevCaps (&time_caps, sizeof(time_caps));
322 if (res < time_caps.wPeriodMin)
323 res = time_caps.wPeriodMin;
329 setitimer_helper (const struct itimerval* itnew,
330 struct itimerval* itold, struct itimerval* itcurrent,
331 MMRESULT* tid, DWORD sigkind)
333 UINT delay, resolution, event_type;
335 /* First stop the old timer */
338 timeKillEvent (*tid);
339 timeEndPeriod (setitimer_helper_period (itcurrent,
340 setitimer_helper_timer_prec));
344 /* Return old itimerval if requested */
350 /* Determine if to start new timer */
351 delay = setitimer_helper_period (itnew, 1);
354 resolution = setitimer_helper_period (itnew,
355 setitimer_helper_timer_prec);
356 event_type = (itnew->it_value.tv_sec == 0 &&
357 itnew->it_value.tv_usec == 0)
358 ? TIME_ONESHOT : TIME_PERIODIC;
359 timeBeginPeriod (resolution);
360 *tid = timeSetEvent (delay, resolution, setitimer_helper_proc, sigkind,
364 return !delay || *tid;
368 mswindows_setitimer (int kind, const struct itimerval *itnew,
369 struct itimerval *itold)
371 /* In this version, both interval and value are allowed
372 only if they are equal. */
373 assert ((itnew->it_value.tv_sec == 0 && itnew->it_value.tv_usec == 0)
374 || (itnew->it_interval.tv_sec == 0 &&
375 itnew->it_interval.tv_usec == 0)
376 || (itnew->it_value.tv_sec == itnew->it_interval.tv_sec &&
377 itnew->it_value.tv_usec == itnew->it_interval.tv_usec));
379 if (kind == ITIMER_REAL)
380 return setitimer_helper (itnew, itold, &it_alarm, &tid_alarm, SIGALRM);
381 else if (kind == ITIMER_PROF)
382 return setitimer_helper (itnew, itold, &it_prof, &tid_prof, SIGPROF);
384 return errno = EINVAL;
391 DEFSUBR (Fmswindows_shell_execute);
393 DEFSUBR (Fmswindows_cygwin_to_win32_path);
400 init_potentially_nonexistent_functions ();