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);
160 struct gcpro gcpro1, gcpro2;
162 CHECK_STRING (document);
164 if (NILP (current_dir))
165 current_dir = current_buffer->directory;
167 GCPRO2 (current_dir, document);
169 /* Use mule and cygwin-safe APIs top get at file data. */
170 if (STRINGP (current_dir))
172 TO_EXTERNAL_FORMAT (LISP_STRING, current_dir,
176 CYGWIN_WIN32_PATH (f, path);
182 if (STRINGP (document))
184 TO_EXTERNAL_FORMAT (LISP_STRING, document,
188 CYGWIN_WIN32_PATH (f, doc);
196 ret = (int) ShellExecute (NULL,
197 (STRINGP (operation) ?
198 XSTRING_DATA (operation) : NULL),
200 (STRINGP (parameters) ?
201 XSTRING_DATA (parameters) : NULL),
204 XINT (show_flag) : SW_SHOWDEFAULT));
209 if (ret == ERROR_FILE_NOT_FOUND)
210 signal_simple_error ("file not found", document);
211 else if (ret == ERROR_PATH_NOT_FOUND)
212 signal_simple_error ("path not found", current_dir);
213 else if (ret == ERROR_BAD_FORMAT)
214 signal_simple_error ("bad executable format", document);
216 error ("internal error");
222 /*--------------------------------------------------------------------*/
224 /*--------------------------------------------------------------------*/
226 /* setitimer() does not exist on native MS Windows, and appears broken
227 on Cygwin (random lockups when BROKEN_SIGIO is defined), so we
228 emulate in both cases by using multimedia timers. */
230 /* We emulate two timers, one for SIGALRM, another for SIGPROF.
232 itimerproc() function has an implementation limitation: it does
233 not allow to set *both* interval and period. If an attempt is
234 made to set both, and then they are unequal, the function
237 Minimum timer resolution on Win32 systems varies, and is greater
238 than or equal than 1 ms. The resolution is always wrapped not to
239 attempt to get below the system defined limit.
242 /* Timer precision, denominator of one fraction: for 100 ms
243 interval, request 10 ms precision
245 const int setitimer_helper_timer_prec = 10;
247 /* Last itimervals, as set by calls to setitimer */
248 static struct itimerval it_alarm;
249 static struct itimerval it_prof;
251 /* Timer IDs as returned by MM */
252 MMRESULT tid_alarm = 0;
253 MMRESULT tid_prof = 0;
256 setitimer_helper_proc (UINT uID, UINT uMsg, DWORD dwUser,
257 DWORD dw1, DWORD dw2)
259 /* Just raise the signal indicated by the dwUser parameter */
261 kill (getpid (), dwUser);
263 mswindows_raise (dwUser);
267 /* Divide time in ms specified by IT by DENOM. Return 1 ms
268 if division results in zero */
270 setitimer_helper_period (const struct itimerval* it, UINT denom)
272 static TIMECAPS time_caps;
275 const struct timeval* tv =
276 (it->it_value.tv_sec == 0 && it->it_value.tv_usec == 0)
277 ? &it->it_interval : &it->it_value;
279 /* Zero means stop timer */
280 if (tv->tv_sec == 0 && tv->tv_usec == 0)
283 /* Convert to ms and divide by denom */
284 res = (tv->tv_sec * 1000 + (tv->tv_usec + 500) / 1000) / denom;
286 /* Converge to minimum timer resolution */
287 if (time_caps.wPeriodMin == 0)
288 timeGetDevCaps (&time_caps, sizeof(time_caps));
290 if (res < time_caps.wPeriodMin)
291 res = time_caps.wPeriodMin;
297 setitimer_helper (const struct itimerval* itnew,
298 struct itimerval* itold, struct itimerval* itcurrent,
299 MMRESULT* tid, DWORD sigkind)
301 UINT delay, resolution, event_type;
303 /* First stop the old timer */
306 timeKillEvent (*tid);
307 timeEndPeriod (setitimer_helper_period (itcurrent,
308 setitimer_helper_timer_prec));
312 /* Return old itimerval if requested */
318 /* Determine if to start new timer */
319 delay = setitimer_helper_period (itnew, 1);
322 resolution = setitimer_helper_period (itnew,
323 setitimer_helper_timer_prec);
324 event_type = (itnew->it_value.tv_sec == 0 &&
325 itnew->it_value.tv_usec == 0)
326 ? TIME_ONESHOT : TIME_PERIODIC;
327 timeBeginPeriod (resolution);
328 *tid = timeSetEvent (delay, resolution, setitimer_helper_proc, sigkind,
332 return !delay || *tid;
336 mswindows_setitimer (int kind, const struct itimerval *itnew,
337 struct itimerval *itold)
339 /* In this version, both interval and value are allowed
340 only if they are equal. */
341 assert ((itnew->it_value.tv_sec == 0 && itnew->it_value.tv_usec == 0)
342 || (itnew->it_interval.tv_sec == 0 &&
343 itnew->it_interval.tv_usec == 0)
344 || (itnew->it_value.tv_sec == itnew->it_interval.tv_sec &&
345 itnew->it_value.tv_usec == itnew->it_interval.tv_usec));
347 if (kind == ITIMER_REAL)
348 return setitimer_helper (itnew, itold, &it_alarm, &tid_alarm, SIGALRM);
349 else if (kind == ITIMER_PROF)
350 return setitimer_helper (itnew, itold, &it_prof, &tid_prof, SIGPROF);
352 return errno = EINVAL;
359 DEFSUBR (Fmswindows_shell_execute);
365 init_potentially_nonexistent_functions ();