1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
30 #include "gdkconfig.h"
34 #ifdef HAVE_BIND_TEXTDOMAIN_CODESET
44 #include <sys/types.h> /* For uid_t, gid_t */
52 #include <pango/pango-types.h> /* For pango_language_from_string */
56 #include "gtkaccelmap.h"
58 #include "gtkclipboard.h"
60 #include "gtkversion.h"
62 #include "gtkmodules.h"
64 #include "gtkselection.h"
65 #include "gtksettings.h"
66 #include "gtkwidget.h"
67 #include "gtkwindow.h"
68 #include "gtkprivate.h"
72 #include "gdk/gdkprivate.h" /* for GDK_WINDOW_DESTROYED */
74 /* Private type definitions
76 typedef struct _GtkInitFunction GtkInitFunction;
77 typedef struct _GtkQuitFunction GtkQuitFunction;
78 typedef struct _GtkClosure GtkClosure;
79 typedef struct _GtkKeySnooperData GtkKeySnooperData;
81 struct _GtkInitFunction
87 struct _GtkQuitFunction
91 GtkCallbackMarshal marshal;
94 GtkDestroyNotify destroy;
99 GtkCallbackMarshal marshal;
101 GtkDestroyNotify destroy;
104 struct _GtkKeySnooperData
106 GtkKeySnoopFunc func;
111 static gint gtk_quit_invoke_function (GtkQuitFunction *quitf);
112 static void gtk_quit_destroy (GtkQuitFunction *quitf);
113 static gint gtk_invoke_key_snoopers (GtkWidget *grab_widget,
116 static void gtk_destroy_closure (gpointer data);
117 static gboolean gtk_invoke_idle_timeout (gpointer data);
118 static void gtk_invoke_input (gpointer data,
120 GdkInputCondition condition);
123 static void gtk_error (gchar *str);
124 static void gtk_warning (gchar *str);
125 static void gtk_message (gchar *str);
126 static void gtk_print (gchar *str);
129 static GtkWindowGroup *gtk_main_get_window_group (GtkWidget *widget);
131 const guint gtk_major_version = GTK_MAJOR_VERSION;
132 const guint gtk_minor_version = GTK_MINOR_VERSION;
133 const guint gtk_micro_version = GTK_MICRO_VERSION;
134 const guint gtk_binary_age = GTK_BINARY_AGE;
135 const guint gtk_interface_age = GTK_INTERFACE_AGE;
137 static guint gtk_main_loop_level = 0;
138 static gint gtk_initialized = FALSE;
139 static GList *current_events = NULL;
141 static GSList *main_loops = NULL; /* stack of currently executing main loops */
143 static GList *init_functions = NULL; /* A list of init functions.
145 static GList *quit_functions = NULL; /* A list of quit functions.
147 static GSList *key_snoopers = NULL;
149 guint gtk_debug_flags = 0; /* Global GTK debug flag */
151 #ifdef G_ENABLE_DEBUG
152 static const GDebugKey gtk_debug_keys[] = {
153 {"misc", GTK_DEBUG_MISC},
154 {"plugsocket", GTK_DEBUG_PLUGSOCKET},
155 {"text", GTK_DEBUG_TEXT},
156 {"tree", GTK_DEBUG_TREE},
157 {"updates", GTK_DEBUG_UPDATES},
158 {"keybindings", GTK_DEBUG_KEYBINDINGS},
159 {"multihead", GTK_DEBUG_MULTIHEAD},
160 {"modules", GTK_DEBUG_MODULES},
161 {"geometry", GTK_DEBUG_GEOMETRY},
162 {"icontheme", GTK_DEBUG_ICONTHEME},
163 {"printing", GTK_DEBUG_PRINTING}
165 #endif /* G_ENABLE_DEBUG */
169 * @required_major: the required major version.
170 * @required_minor: the required minor version.
171 * @required_micro: the required micro version.
173 * Checks that the GTK+ library in use is compatible with the
174 * given version. Generally you would pass in the constants
175 * #GTK_MAJOR_VERSION, #GTK_MINOR_VERSION, #GTK_MICRO_VERSION
176 * as the three arguments to this function; that produces
177 * a check that the library in use is compatible with
178 * the version of GTK+ the application or module was compiled
181 * Compatibility is defined by two things: first the version
182 * of the running library is newer than the version
183 * @required_major.required_minor.@required_micro. Second
184 * the running library must be binary compatible with the
185 * version @required_major.required_minor.@required_micro
186 * (same major version.)
188 * This function is primarily for GTK+ modules; the module
189 * can call this function to check that it wasn't loaded
190 * into an incompatible version of GTK+. However, such a
191 * a check isn't completely reliable, since the module may be
192 * linked against an old version of GTK+ and calling the
193 * old version of gtk_check_version(), but still get loaded
194 * into an application using a newer version of GTK+.
196 * Return value: %NULL if the GTK+ library is compatible with the
197 * given version, or a string describing the version mismatch.
198 * The returned string is owned by GTK+ and should not be modified
202 gtk_check_version (guint required_major,
203 guint required_minor,
204 guint required_micro)
206 gint gtk_effective_micro = 100 * GTK_MINOR_VERSION + GTK_MICRO_VERSION;
207 gint required_effective_micro = 100 * required_minor + required_micro;
209 if (required_major > GTK_MAJOR_VERSION)
210 return "Gtk+ version too old (major mismatch)";
211 if (required_major < GTK_MAJOR_VERSION)
212 return "Gtk+ version too new (major mismatch)";
213 if (required_effective_micro < gtk_effective_micro - GTK_BINARY_AGE)
214 return "Gtk+ version too new (micro mismatch)";
215 if (required_effective_micro > gtk_effective_micro)
216 return "Gtk+ version too old (micro mismatch)";
220 /* This checks to see if the process is running suid or sgid
221 * at the current time. If so, we don't allow GTK+ to be initialized.
222 * This is meant to be a mild check - we only error out if we
223 * can prove the programmer is doing something wrong, not if
224 * they could be doing something wrong. For this reason, we
225 * don't use issetugid() on BSD or prctl (PR_GET_DUMPABLE).
230 /* this isn't at all relevant on MS Windows and doesn't compile ... --hb */
232 uid_t ruid, euid, suid; /* Real, effective and saved user ID's */
233 gid_t rgid, egid, sgid; /* Real, effective and saved group ID's */
235 #ifdef HAVE_GETRESUID
236 /* These aren't in the header files, so we prototype them here.
238 int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
239 int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
241 if (getresuid (&ruid, &euid, &suid) != 0 ||
242 getresgid (&rgid, &egid, &sgid) != 0)
243 #endif /* HAVE_GETRESUID */
245 suid = ruid = getuid ();
246 sgid = rgid = getgid ();
251 if (ruid != euid || ruid != suid ||
252 rgid != egid || rgid != sgid)
254 g_warning ("This process is currently running setuid or setgid.\n"
255 "This is not a supported use of GTK+. You must create a helper\n"
256 "program instead. For further details, see:\n\n"
257 " http://www.gtk.org/setuid.html\n\n"
258 "Refusing to initialize GTK+.");
267 G_WIN32_DLLMAIN_FOR_DLL_NAME(static, dll_name)
270 _gtk_get_datadir (void)
272 static char *gtk_datadir = NULL;
273 if (gtk_datadir == NULL)
274 gtk_datadir = g_win32_get_package_installation_subdirectory
275 (GETTEXT_PACKAGE, dll_name, "share");
281 _gtk_get_libdir (void)
283 static char *gtk_libdir = NULL;
284 if (gtk_libdir == NULL)
285 gtk_libdir = g_win32_get_package_installation_subdirectory
286 (GETTEXT_PACKAGE, dll_name, "lib");
292 _gtk_get_localedir (void)
294 static char *gtk_localedir = NULL;
295 if (gtk_localedir == NULL)
299 temp = g_win32_get_package_installation_subdirectory
300 (GETTEXT_PACKAGE, dll_name, "lib\\locale");
302 /* gtk_localedir is passed to bindtextdomain() which isn't
305 gtk_localedir = g_win32_locale_filename_from_utf8 (temp);
308 return gtk_localedir;
312 _gtk_get_sysconfdir (void)
314 static char *gtk_sysconfdir = NULL;
315 if (gtk_sysconfdir == NULL)
316 gtk_sysconfdir = g_win32_get_package_installation_subdirectory
317 (GETTEXT_PACKAGE, dll_name, "etc");
319 return gtk_sysconfdir;
323 _gtk_get_data_prefix (void)
325 static char *gtk_data_prefix = NULL;
326 if (gtk_data_prefix == NULL)
327 gtk_data_prefix = g_win32_get_package_installation_directory
328 (GETTEXT_PACKAGE, dll_name);
330 return gtk_data_prefix;
333 #endif /* G_OS_WIN32 */
335 static gboolean do_setlocale = TRUE;
338 * gtk_disable_setlocale:
340 * Prevents gtk_init(), gtk_init_check(), gtk_init_with_args() and
341 * gtk_parse_args() from automatically
342 * calling <literal>setlocale (LC_ALL, "")</literal>. You would
343 * want to use this function if you wanted to set the locale for
344 * your program to something other than the user's locale, or if
345 * you wanted to set different values for different locale categories.
347 * Most programs should not need to call this function.
350 gtk_disable_setlocale (void)
353 g_warning ("gtk_disable_setlocale() must be called before gtk_init()");
355 do_setlocale = FALSE;
358 #ifdef G_PLATFORM_WIN32
359 #undef gtk_init_check
362 static GString *gtk_modules_string = NULL;
363 static gboolean g_fatal_warnings = FALSE;
365 #ifdef G_ENABLE_DEBUG
367 gtk_arg_debug_cb (const char *key, const char *value, gpointer user_data)
369 gtk_debug_flags |= g_parse_debug_string (value,
371 G_N_ELEMENTS (gtk_debug_keys));
377 gtk_arg_no_debug_cb (const char *key, const char *value, gpointer user_data)
379 gtk_debug_flags &= ~g_parse_debug_string (value,
381 G_N_ELEMENTS (gtk_debug_keys));
385 #endif /* G_ENABLE_DEBUG */
388 gtk_arg_module_cb (const char *key, const char *value, gpointer user_data)
392 if (gtk_modules_string)
393 g_string_append_c (gtk_modules_string, G_SEARCHPATH_SEPARATOR);
395 gtk_modules_string = g_string_new (NULL);
397 g_string_append (gtk_modules_string, value);
403 static const GOptionEntry gtk_args[] = {
404 { "gtk-module", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_module_cb,
405 /* Description of --gtk-module=MODULES in --help output */ N_("Load additional GTK+ modules"),
406 /* Placeholder in --gtk-module=MODULES in --help output */ N_("MODULES") },
407 { "g-fatal-warnings", 0, 0, G_OPTION_ARG_NONE, &g_fatal_warnings,
408 /* Description of --g-fatal-warnings in --help output */ N_("Make all warnings fatal"), NULL },
409 #ifdef G_ENABLE_DEBUG
410 { "gtk-debug", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_debug_cb,
411 /* Description of --gtk-debug=FLAGS in --help output */ N_("GTK+ debugging flags to set"),
412 /* Placeholder in --gtk-debug=FLAGS in --help output */ N_("FLAGS") },
413 { "gtk-no-debug", 0, 0, G_OPTION_ARG_CALLBACK, gtk_arg_no_debug_cb,
414 /* Description of --gtk-no-debug=FLAGS in --help output */ N_("GTK+ debugging flags to unset"),
415 /* Placeholder in --gtk-no-debug=FLAGS in --help output */ N_("FLAGS") },
422 static char *iso639_to_check = NULL;
423 static char *iso3166_to_check = NULL;
424 static char *script_to_check = NULL;
425 static gboolean setlocale_called = FALSE;
428 enum_locale_proc (LPTSTR locale)
436 lcid = strtoul (locale, &endptr, 16);
437 if (*endptr == '\0' &&
438 GetLocaleInfo (lcid, LOCALE_SISO639LANGNAME, iso639, sizeof (iso639)) &&
439 GetLocaleInfo (lcid, LOCALE_SISO3166CTRYNAME, iso3166, sizeof (iso3166)))
441 if (strcmp (iso639, iso639_to_check) == 0 &&
442 ((iso3166_to_check != NULL &&
443 strcmp (iso3166, iso3166_to_check) == 0) ||
444 (iso3166_to_check == NULL &&
445 SUBLANGID (LANGIDFROMLCID (lcid)) == SUBLANG_DEFAULT)))
447 char language[100], country[100];
450 if (script_to_check != NULL)
452 /* If lcid is the "other" script for this language,
453 * return TRUE, i.e. continue looking.
455 if (strcmp (script_to_check, "Latn") == 0)
457 switch (LANGIDFROMLCID (lcid))
459 case MAKELANGID (LANG_AZERI, SUBLANG_AZERI_CYRILLIC):
461 case MAKELANGID (LANG_UZBEK, SUBLANG_UZBEK_CYRILLIC):
463 case MAKELANGID (LANG_SERBIAN, SUBLANG_SERBIAN_CYRILLIC):
465 case MAKELANGID (LANG_SERBIAN, 0x07):
466 /* Serbian in Bosnia and Herzegovina, Cyrillic */
470 else if (strcmp (script_to_check, "Cyrl") == 0)
472 switch (LANGIDFROMLCID (lcid))
474 case MAKELANGID (LANG_AZERI, SUBLANG_AZERI_LATIN):
476 case MAKELANGID (LANG_UZBEK, SUBLANG_UZBEK_LATIN):
478 case MAKELANGID (LANG_SERBIAN, SUBLANG_SERBIAN_LATIN):
480 case MAKELANGID (LANG_SERBIAN, 0x06):
481 /* Serbian in Bosnia and Herzegovina, Latin */
487 SetThreadLocale (lcid);
489 if (GetLocaleInfo (lcid, LOCALE_SENGLANGUAGE, language, sizeof (language)) &&
490 GetLocaleInfo (lcid, LOCALE_SENGCOUNTRY, country, sizeof (country)))
492 strcpy (locale, language);
493 strcat (locale, "_");
494 strcat (locale, country);
496 if (setlocale (LC_ALL, locale) != NULL)
497 setlocale_called = TRUE;
510 do_pre_parse_initialization (int *argc,
513 const gchar *env_string;
516 g_set_error_handler (gtk_error);
517 g_set_warning_handler (gtk_warning);
518 g_set_message_handler (gtk_message);
519 g_set_print_handler (gtk_print);
525 /* If some of the POSIXish environment variables are set, set
526 * the Win32 thread locale correspondingly.
528 char *p = getenv ("LC_ALL");
535 if (strcmp (p, "C") == 0)
536 SetThreadLocale (LOCALE_SYSTEM_DEFAULT);
539 /* Check if one of the supported locales match the
540 * environment variable. If so, use that locale.
543 iso3166_to_check = strchr (iso639_to_check, '_');
544 if (iso3166_to_check != NULL)
546 *iso3166_to_check++ = '\0';
548 script_to_check = strchr (iso3166_to_check, '@');
549 if (script_to_check != NULL)
550 *script_to_check++ = '\0';
552 /* Handle special cases. */
554 /* The standard code for Serbia and Montenegro was
555 * "CS", but MSFT uses for some reason "SP". By now
556 * (October 2006), SP has split into two, "RS" and
557 * "ME", but don't bother trying to handle those
558 * yet. Do handle the even older "YU", though.
560 if (strcmp (iso3166_to_check, "CS") == 0 ||
561 strcmp (iso3166_to_check, "YU") == 0)
562 iso3166_to_check = "SP";
566 script_to_check = strchr (iso639_to_check, '@');
567 if (script_to_check != NULL)
568 *script_to_check++ = '\0';
569 /* LANG_SERBIAN == LANG_CROATIAN, recognize just "sr" */
570 if (strcmp (iso639_to_check, "sr") == 0)
571 iso3166_to_check = "SP";
574 EnumSystemLocales (enum_locale_proc, LCID_SUPPORTED);
578 if (!setlocale_called)
579 setlocale (LC_ALL, "");
581 if (!setlocale (LC_ALL, ""))
582 g_warning ("Locale not supported by C library.\n\tUsing the fallback 'C' locale.");
586 gdk_pre_parse_libgtk_only ();
587 gdk_event_handler_set ((GdkEventFunc)gtk_main_do_event, NULL, NULL);
589 #ifdef G_ENABLE_DEBUG
590 env_string = g_getenv ("GTK_DEBUG");
591 if (env_string != NULL)
593 gtk_debug_flags = g_parse_debug_string (env_string,
595 G_N_ELEMENTS (gtk_debug_keys));
598 #endif /* G_ENABLE_DEBUG */
600 env_string = g_getenv ("GTK_MODULES");
602 gtk_modules_string = g_string_new (env_string);
606 gettext_initialization (void)
609 bindtextdomain (GETTEXT_PACKAGE, GTK_LOCALEDIR);
610 bindtextdomain (GETTEXT_PACKAGE "-properties", GTK_LOCALEDIR);
611 # ifdef HAVE_BIND_TEXTDOMAIN_CODESET
612 bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
613 bind_textdomain_codeset (GETTEXT_PACKAGE "-properties", "UTF-8");
619 do_post_parse_initialization (int *argc,
625 gettext_initialization ();
627 if (g_fatal_warnings)
629 GLogLevelFlags fatal_mask;
631 fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
632 fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
633 g_log_set_always_fatal (fatal_mask);
636 if (gtk_debug_flags & GTK_DEBUG_UPDATES)
637 gdk_window_set_debug_updates (TRUE);
640 /* Translate to default:RTL if you want your widgets
641 * to be RTL, otherwise translate to default:LTR.
642 * Do *not* translate it to "predefinito:LTR", if it
643 * it isn't default:LTR or default:RTL it will not work
645 char *e = _("default:LTR");
646 if (strcmp (e, "default:RTL")==0) {
647 gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
648 } else if (strcmp (e, "default:LTR")) {
649 g_warning ("Whoever translated default:LTR did so wrongly.\n");
654 _gtk_accel_map_init ();
657 /* Set the 'initialized' flag.
659 gtk_initialized = TRUE;
661 /* load gtk modules */
662 if (gtk_modules_string)
664 _gtk_modules_init (argc, argv, gtk_modules_string->str);
665 g_string_free (gtk_modules_string, TRUE);
672 gboolean open_default_display;
676 pre_parse_hook (GOptionContext *context,
681 do_pre_parse_initialization (NULL, NULL);
687 post_parse_hook (GOptionContext *context,
692 OptionGroupInfo *info = data;
695 do_post_parse_initialization (NULL, NULL);
697 if (info->open_default_display)
699 if (gdk_display_open_default_libgtk_only () == NULL)
701 const char *display_name = gdk_get_display_arg_name ();
704 G_OPTION_ERROR_FAILED,
705 "cannot open display: %s",
706 display_name ? display_name : "" );
717 * gtk_get_option_group:
718 * @open_default_display: whether to open the default display
719 * when parsing the commandline arguments
721 * Returns a #GOptionGroup for the commandline arguments recognized
722 * by GTK+ and GDK. You should add this group to your #GOptionContext
723 * with g_option_context_add_group(), if you are using
724 * g_option_context_parse() to parse your commandline arguments.
726 * Returns a #GOptionGroup for the commandline arguments recognized
732 gtk_get_option_group (gboolean open_default_display)
735 OptionGroupInfo *info;
737 gettext_initialization ();
739 info = g_new0 (OptionGroupInfo, 1);
740 info->open_default_display = open_default_display;
742 group = g_option_group_new ("gtk", _("GTK+ Options"), _("Show GTK+ Options"), info, g_free);
743 g_option_group_set_parse_hooks (group, pre_parse_hook, post_parse_hook);
745 gdk_add_option_entries_libgtk_only (group);
746 g_option_group_add_entries (group, gtk_args);
747 g_option_group_set_translation_domain (group, GETTEXT_PACKAGE);
753 * gtk_init_with_args:
754 * @argc: a pointer to the number of command line arguments.
755 * @argv: a pointer to the array of command line arguments.
756 * @parameter_string: a string which is displayed in
757 * the first line of <option>--help</option> output, after
758 * <literal><replaceable>programname</replaceable> [OPTION...]</literal>
759 * @entries: a %NULL-terminated array of #GOptionEntry<!-- -->s
760 * describing the options of your program
761 * @translation_domain: a translation domain to use for translating
762 * the <option>--help</option> output for the options in @entries
763 * with gettext(), or %NULL
764 * @error: a return location for errors
766 * This function does the same work as gtk_init_check().
767 * Additionally, it allows you to add your own commandline options,
768 * and it automatically generates nicely formatted
769 * <option>--help</option> output. Note that your program will
770 * be terminated after writing out the help output.
772 * Returns: %TRUE if the GUI has been successfully initialized,
778 gtk_init_with_args (int *argc,
780 char *parameter_string,
781 GOptionEntry *entries,
782 char *translation_domain,
785 GOptionContext *context;
786 GOptionGroup *gtk_group;
792 gettext_initialization ();
794 if (!check_setugid ())
797 gtk_group = gtk_get_option_group (TRUE);
799 context = g_option_context_new (parameter_string);
800 g_option_context_add_group (context, gtk_group);
803 g_option_context_add_main_entries (context, entries, translation_domain);
804 retval = g_option_context_parse (context, argc, argv, error);
806 g_option_context_free (context);
814 * @argc: a pointer to the number of command line arguments.
815 * @argv: a pointer to the array of command line arguments.
817 * Parses command line arguments, and initializes global
818 * attributes of GTK+, but does not actually open a connection
819 * to a display. (See gdk_display_open(), gdk_get_display_arg_name())
821 * Any arguments used by GTK+ or GDK are removed from the array and
822 * @argc and @argv are updated accordingly.
824 * You shouldn't call this function explicitely if you are using
825 * gtk_init(), or gtk_init_check().
827 * Return value: %TRUE if initialization succeeded, otherwise %FALSE.
830 gtk_parse_args (int *argc,
833 GOptionContext *option_context;
834 GOptionGroup *gtk_group;
835 GError *error = NULL;
840 gettext_initialization ();
842 if (!check_setugid ())
845 option_context = g_option_context_new (NULL);
846 g_option_context_set_ignore_unknown_options (option_context, TRUE);
847 g_option_context_set_help_enabled (option_context, FALSE);
848 gtk_group = gtk_get_option_group (FALSE);
849 g_option_context_set_main_group (option_context, gtk_group);
850 if (!g_option_context_parse (option_context, argc, argv, &error))
852 g_warning ("%s", error->message);
853 g_error_free (error);
856 g_option_context_free (option_context);
861 #ifdef G_PLATFORM_WIN32
862 #undef gtk_init_check
867 * @argc: Address of the <parameter>argc</parameter> parameter of your
868 * main() function. Changed if any arguments were handled.
869 * @argv: Address of the <parameter>argv</parameter> parameter of main().
870 * Any parameters understood by gtk_init() are stripped before return.
872 * This function does the same work as gtk_init() with only
873 * a single change: It does not terminate the program if the GUI can't be
874 * initialized. Instead it returns %FALSE on failure.
876 * This way the application can fall back to some other means of communication
877 * with the user - for example a curses or command line interface.
879 * Return value: %TRUE if the GUI has been successfully initialized,
883 gtk_init_check (int *argc,
886 if (!gtk_parse_args (argc, argv))
889 return gdk_display_open_default_libgtk_only () != NULL;
892 #ifdef G_PLATFORM_WIN32
898 * @argc: Address of the <parameter>argc</parameter> parameter of your
899 * main() function. Changed if any arguments were handled.
900 * @argv: Address of the <parameter>argv</parameter> parameter of main().
901 * Any parameters understood by gtk_init() are stripped before return.
903 * Call this function before using any other GTK+ functions in your GUI
904 * applications. It will initialize everything needed to operate the
905 * toolkit and parses some standard command line options. @argc and
906 * @argv are adjusted accordingly so your own code will
907 * never see those standard arguments.
909 * Note that there are some alternative ways to initialize GTK+:
910 * if you are calling gtk_parse_args(), gtk_init_check(),
911 * gtk_init_with_args() or g_option_context_parse() with
912 * the option group returned by gtk_get_option_group(), you
913 * <emphasis>don't</emphasis> have to call gtk_init().
916 * This function will terminate your program if it was unable to initialize
917 * the GUI for some reason. If you want your program to fall back to a
918 * textual interface you want to call gtk_init_check() instead.
922 gtk_init (int *argc, char ***argv)
924 if (!gtk_init_check (argc, argv))
926 const char *display_name_arg = gdk_get_display_arg_name ();
927 g_warning ("cannot open display: %s", display_name_arg ? display_name_arg : " ");
932 #ifdef G_PLATFORM_WIN32
935 check_sizeof_GtkWindow (size_t sizeof_GtkWindow)
937 if (sizeof_GtkWindow != sizeof (GtkWindow))
938 g_error ("Incompatible build!\n"
939 "The code using GTK+ thinks GtkWindow is of different\n"
940 "size than it actually is in this build of GTK+.\n"
941 "On Windows, this probably means that you have compiled\n"
942 "your code with gcc without the -mms-bitfields switch,\n"
943 "or that you are using an unsupported compiler.");
946 /* In GTK+ 2.0 the GtkWindow struct actually is the same size in
947 * gcc-compiled code on Win32 whether compiled with -fnative-struct or
948 * not. Unfortunately this wan't noticed until after GTK+ 2.0.1. So,
949 * from GTK+ 2.0.2 on, check some other struct, too, where the use of
950 * -fnative-struct still matters. GtkBox is one such.
953 check_sizeof_GtkBox (size_t sizeof_GtkBox)
955 if (sizeof_GtkBox != sizeof (GtkBox))
956 g_error ("Incompatible build!\n"
957 "The code using GTK+ thinks GtkBox is of different\n"
958 "size than it actually is in this build of GTK+.\n"
959 "On Windows, this probably means that you have compiled\n"
960 "your code with gcc without the -mms-bitfields switch,\n"
961 "or that you are using an unsupported compiler.");
964 /* These two functions might get more checks added later, thus pass
965 * in the number of extra args.
968 gtk_init_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow, size_t sizeof_GtkBox)
970 check_sizeof_GtkWindow (sizeof_GtkWindow);
972 check_sizeof_GtkBox (sizeof_GtkBox);
973 gtk_init (argc, argv);
977 gtk_init_check_abi_check (int *argc, char ***argv, int num_checks, size_t sizeof_GtkWindow, size_t sizeof_GtkBox)
979 check_sizeof_GtkWindow (sizeof_GtkWindow);
981 check_sizeof_GtkBox (sizeof_GtkBox);
982 return gtk_init_check (argc, argv);
988 gtk_exit (gint errorcode)
997 * Initializes internationalization support for GTK+. gtk_init()
998 * automatically does this, so there is typically no point
999 * in calling this function.
1001 * If you are calling this function because you changed the locale
1002 * after GTK+ is was initialized, then calling this function
1003 * may help a bit. (Note, however, that changing the locale
1004 * after GTK+ is initialized may produce inconsistent results and
1005 * is not really supported.)
1007 * In detail - sets the current locale according to the
1008 * program environment. This is the same as calling the C library function
1009 * <literal>setlocale (LC_ALL, "")</literal> but also takes care of the
1010 * locale specific setup of the windowing system used by GDK.
1012 * Returns: a string corresponding to the locale set, typically in the
1013 * form lang_COUNTRY, where lang is an ISO-639 language code, and
1014 * COUNTRY is an ISO-3166 country code. On Unix, this form matches the
1015 * result of the setlocale(); it is also used on other machines, such as
1016 * Windows, where the C library returns a different result. The string is
1017 * owned by GTK+ and should not be modified or freed.
1020 gtk_set_locale (void)
1022 return gdk_set_locale ();
1026 * _gtk_get_lc_ctype:
1028 * Return the Unix-style locale string for the language currently in
1029 * effect. On Unix systems, this is the return value from
1030 * <literal>setlocale(LC_CTYPE, NULL)</literal>, and the user can
1031 * affect this through the environment variables LC_ALL, LC_CTYPE or
1032 * LANG (checked in that order). The locale strings typically is in
1033 * the form lang_COUNTRY, where lang is an ISO-639 language code, and
1034 * COUNTRY is an ISO-3166 country code. For instance, sv_FI for
1035 * Swedish as written in Finland or pt_BR for Portuguese as written in
1038 * On Windows, the C library doesn't use any such environment
1039 * variables, and setting them won't affect the behaviour of functions
1040 * like ctime(). The user sets the locale through the Regional Options
1041 * in the Control Panel. The C library (in the setlocale() function)
1042 * does not use country and language codes, but country and language
1043 * names spelled out in English.
1044 * However, this function does check the above environment
1045 * variables, and does return a Unix-style locale string based on
1046 * either said environment variables or the thread's current locale.
1048 * Return value: a dynamically allocated string, free with g_free().
1052 _gtk_get_lc_ctype (void)
1055 /* Somebody might try to set the locale for this process using the
1056 * LANG or LC_ environment variables. The Microsoft C library
1057 * doesn't know anything about them. You set the locale in the
1058 * Control Panel. Setting these env vars won't have any affect on
1059 * locale-dependent C library functions like ctime(). But just for
1060 * kicks, do obey LC_ALL, LC_CTYPE and LANG in GTK. (This also makes
1061 * it easier to test GTK and Pango in various default languages, you
1062 * don't have to clickety-click in the Control Panel, you can simply
1063 * start the program with LC_ALL=something on the command line.)
1067 p = getenv ("LC_ALL");
1069 return g_strdup (p);
1071 p = getenv ("LC_CTYPE");
1073 return g_strdup (p);
1075 p = getenv ("LANG");
1077 return g_strdup (p);
1079 return g_win32_getlocale ();
1081 return g_strdup (setlocale (LC_CTYPE, NULL));
1086 * gtk_get_default_language:
1088 * Returns the #PangoLanguage for the default language currently in
1089 * effect. (Note that this can change over the life of an
1090 * application.) The default language is derived from the current
1091 * locale. It determines, for example, whether GTK+ uses the
1092 * right-to-left or left-to-right text direction. See
1093 * _gtk_get_lc_ctype() for notes on behaviour on Windows.
1095 * Return value: the default language as a #PangoLanguage, must not be
1099 gtk_get_default_language (void)
1102 PangoLanguage *result;
1105 lang = _gtk_get_lc_ctype ();
1106 p = strchr (lang, '.');
1109 p = strchr (lang, '@');
1113 result = pango_language_from_string (lang);
1124 GtkInitFunction *init;
1127 gtk_main_loop_level++;
1129 loop = g_main_loop_new (NULL, TRUE);
1130 main_loops = g_slist_prepend (main_loops, loop);
1132 tmp_list = functions = init_functions;
1133 init_functions = NULL;
1137 init = tmp_list->data;
1138 tmp_list = tmp_list->next;
1140 (* init->function) (init->data);
1143 g_list_free (functions);
1145 if (g_main_loop_is_running (main_loops->data))
1147 GDK_THREADS_LEAVE ();
1148 g_main_loop_run (loop);
1149 GDK_THREADS_ENTER ();
1155 GList *reinvoke_list = NULL;
1156 GtkQuitFunction *quitf;
1158 while (quit_functions)
1160 quitf = quit_functions->data;
1162 tmp_list = quit_functions;
1163 quit_functions = g_list_remove_link (quit_functions, quit_functions);
1164 g_list_free_1 (tmp_list);
1166 if ((quitf->main_level && quitf->main_level != gtk_main_loop_level) ||
1167 gtk_quit_invoke_function (quitf))
1169 reinvoke_list = g_list_prepend (reinvoke_list, quitf);
1173 gtk_quit_destroy (quitf);
1180 work = g_list_last (reinvoke_list);
1182 quit_functions->prev = work;
1183 work->next = quit_functions;
1184 quit_functions = work;
1190 main_loops = g_slist_remove (main_loops, loop);
1192 g_main_loop_unref (loop);
1194 gtk_main_loop_level--;
1196 /* Try storing all clipboard data we have */
1197 if (gtk_main_loop_level == 0)
1198 _gtk_clipboard_store_all ();
1202 gtk_main_level (void)
1204 return gtk_main_loop_level;
1208 gtk_main_quit (void)
1210 g_return_if_fail (main_loops != NULL);
1212 g_main_loop_quit (main_loops->data);
1216 gtk_events_pending (void)
1220 GDK_THREADS_LEAVE ();
1221 result = g_main_context_pending (NULL);
1222 GDK_THREADS_ENTER ();
1228 gtk_main_iteration (void)
1230 GDK_THREADS_LEAVE ();
1231 g_main_context_iteration (NULL, TRUE);
1232 GDK_THREADS_ENTER ();
1235 return !g_main_loop_is_running (main_loops->data);
1241 gtk_main_iteration_do (gboolean blocking)
1243 GDK_THREADS_LEAVE ();
1244 g_main_context_iteration (NULL, blocking);
1245 GDK_THREADS_ENTER ();
1248 return !g_main_loop_is_running (main_loops->data);
1253 /* private libgtk to libgdk interfaces
1255 gboolean gdk_pointer_grab_info_libgtk_only (GdkDisplay *display,
1256 GdkWindow **grab_window,
1257 gboolean *owner_events);
1258 gboolean gdk_keyboard_grab_info_libgtk_only (GdkDisplay *display,
1259 GdkWindow **grab_window,
1260 gboolean *owner_events);
1263 rewrite_events_translate (GdkWindow *old_window,
1264 GdkWindow *new_window,
1268 gint old_origin_x, old_origin_y;
1269 gint new_origin_x, new_origin_y;
1271 gdk_window_get_origin (old_window, &old_origin_x, &old_origin_y);
1272 gdk_window_get_origin (new_window, &new_origin_x, &new_origin_y);
1274 *x += old_origin_x - new_origin_x;
1275 *y += old_origin_y - new_origin_y;
1279 rewrite_event_for_window (GdkEvent *event,
1280 GdkWindow *new_window)
1282 event = gdk_event_copy (event);
1284 switch (event->type)
1287 rewrite_events_translate (event->any.window,
1289 &event->scroll.x, &event->scroll.y);
1291 case GDK_BUTTON_PRESS:
1292 case GDK_2BUTTON_PRESS:
1293 case GDK_3BUTTON_PRESS:
1294 case GDK_BUTTON_RELEASE:
1295 rewrite_events_translate (event->any.window,
1297 &event->button.x, &event->button.y);
1299 case GDK_MOTION_NOTIFY:
1300 rewrite_events_translate (event->any.window,
1302 &event->motion.x, &event->motion.y);
1305 case GDK_KEY_RELEASE:
1306 case GDK_PROXIMITY_IN:
1307 case GDK_PROXIMITY_OUT:
1314 g_object_unref (event->any.window);
1315 event->any.window = g_object_ref (new_window);
1320 /* If there is a pointer or keyboard grab in effect with owner_events = TRUE,
1321 * then what X11 does is deliver the event normally if it was going to this
1322 * client, otherwise, delivers it in terms of the grab window. This function
1323 * rewrites events to the effect that events going to the same window group
1324 * are delivered normally, otherwise, the event is delivered in terms of the
1328 rewrite_event_for_grabs (GdkEvent *event)
1330 GdkWindow *grab_window;
1331 GtkWidget *event_widget, *grab_widget;
1332 gboolean owner_events;
1333 GdkDisplay *display;
1335 switch (event->type)
1338 case GDK_BUTTON_PRESS:
1339 case GDK_2BUTTON_PRESS:
1340 case GDK_3BUTTON_PRESS:
1341 case GDK_BUTTON_RELEASE:
1342 case GDK_MOTION_NOTIFY:
1343 case GDK_PROXIMITY_IN:
1344 case GDK_PROXIMITY_OUT:
1345 display = gdk_drawable_get_display (event->proximity.window);
1346 if (!gdk_pointer_grab_info_libgtk_only (display, &grab_window, &owner_events) ||
1352 case GDK_KEY_RELEASE:
1353 display = gdk_drawable_get_display (event->key.window);
1354 if (!gdk_keyboard_grab_info_libgtk_only (display, &grab_window, &owner_events) ||
1363 event_widget = gtk_get_event_widget (event);
1364 gdk_window_get_user_data (grab_window, (void**) &grab_widget);
1367 gtk_main_get_window_group (grab_widget) != gtk_main_get_window_group (event_widget))
1368 return rewrite_event_for_window (event, grab_window);
1374 gtk_main_do_event (GdkEvent *event)
1376 GtkWidget *event_widget;
1377 GtkWidget *grab_widget;
1378 GtkWindowGroup *window_group;
1379 GdkEvent *next_event;
1380 GdkEvent *rewritten_event = NULL;
1383 /* If there are any events pending then get the next one.
1385 next_event = gdk_event_peek ();
1387 /* Try to compress enter/leave notify events. These event
1388 * pairs occur when the mouse is dragged quickly across
1389 * a window with many buttons (or through a menu). Instead
1390 * of highlighting and de-highlighting each widget that
1391 * is crossed it is better to simply de-highlight the widget
1392 * which contained the mouse initially and highlight the
1393 * widget which ends up containing the mouse.
1396 if (((event->type == GDK_ENTER_NOTIFY) ||
1397 (event->type == GDK_LEAVE_NOTIFY)) &&
1398 ((next_event->type == GDK_ENTER_NOTIFY) ||
1399 (next_event->type == GDK_LEAVE_NOTIFY)) &&
1400 (next_event->type != event->type) &&
1401 (next_event->any.window == event->any.window))
1403 /* Throw both the peeked copy and the queued copy away
1405 gdk_event_free (next_event);
1406 next_event = gdk_event_get ();
1407 gdk_event_free (next_event);
1413 gdk_event_free (next_event);
1415 if (event->type == GDK_SETTING)
1417 _gtk_settings_handle_event (&event->setting);
1421 if (event->type == GDK_OWNER_CHANGE)
1423 _gtk_clipboard_handle_event (&event->owner_change);
1427 /* Find the widget which got the event. We store the widget
1428 * in the user_data field of GdkWindow's.
1429 * Ignore the event if we don't have a widget for it, except
1430 * for GDK_PROPERTY_NOTIFY events which are handled specialy.
1431 * Though this happens rarely, bogus events can occour
1432 * for e.g. destroyed GdkWindows.
1434 event_widget = gtk_get_event_widget (event);
1437 /* To handle selection INCR transactions, we select
1438 * PropertyNotify events on the requestor window and create
1439 * a corresponding (fake) GdkWindow so that events get
1440 * here. There won't be a widget though, so we have to handle
1443 if (event->type == GDK_PROPERTY_NOTIFY)
1444 _gtk_selection_incr_event (event->any.window,
1450 /* If pointer or keyboard grabs are in effect, munge the events
1451 * so that each window group looks like a separate app.
1453 rewritten_event = rewrite_event_for_grabs (event);
1454 if (rewritten_event)
1456 event = rewritten_event;
1457 event_widget = gtk_get_event_widget (event);
1460 window_group = gtk_main_get_window_group (event_widget);
1462 /* Push the event onto a stack of current events for
1463 * gtk_current_event_get().
1465 current_events = g_list_prepend (current_events, event);
1467 /* If there is a grab in effect...
1469 if (window_group->grabs)
1471 grab_widget = window_group->grabs->data;
1473 /* If the grab widget is an ancestor of the event widget
1474 * then we send the event to the original event widget.
1475 * This is the key to implementing modality.
1477 if (GTK_WIDGET_IS_SENSITIVE (event_widget) &&
1478 gtk_widget_is_ancestor (event_widget, grab_widget))
1479 grab_widget = event_widget;
1483 grab_widget = event_widget;
1486 /* Not all events get sent to the grabbing widget.
1487 * The delete, destroy, expose, focus change and resize
1488 * events still get sent to the event widget because
1489 * 1) these events have no meaning for the grabbing widget
1490 * and 2) redirecting these events to the grabbing widget
1491 * could cause the display to be messed up.
1493 * Drag events are also not redirected, since it isn't
1494 * clear what the semantics of that would be.
1496 switch (event->type)
1502 g_object_ref (event_widget);
1503 if ((!window_group->grabs || gtk_widget_get_toplevel (window_group->grabs->data) == event_widget) &&
1504 !gtk_widget_event (event_widget, event))
1505 gtk_widget_destroy (event_widget);
1506 g_object_unref (event_widget);
1510 /* Unexpected GDK_DESTROY from the outside, ignore for
1511 * child windows, handle like a GDK_DELETE for toplevels
1513 if (!event_widget->parent)
1515 g_object_ref (event_widget);
1516 if (!gtk_widget_event (event_widget, event) &&
1517 GTK_WIDGET_REALIZED (event_widget))
1518 gtk_widget_destroy (event_widget);
1519 g_object_unref (event_widget);
1524 if (event->any.window && GTK_WIDGET_DOUBLE_BUFFERED (event_widget))
1526 gdk_window_begin_paint_region (event->any.window, event->expose.region);
1527 gtk_widget_send_expose (event_widget, event);
1528 gdk_window_end_paint (event->any.window);
1531 gtk_widget_send_expose (event_widget, event);
1534 case GDK_PROPERTY_NOTIFY:
1536 case GDK_FOCUS_CHANGE:
1540 case GDK_SELECTION_CLEAR:
1541 case GDK_SELECTION_REQUEST:
1542 case GDK_SELECTION_NOTIFY:
1543 case GDK_CLIENT_EVENT:
1544 case GDK_VISIBILITY_NOTIFY:
1545 case GDK_WINDOW_STATE:
1546 case GDK_GRAB_BROKEN:
1547 gtk_widget_event (event_widget, event);
1551 case GDK_BUTTON_PRESS:
1552 case GDK_2BUTTON_PRESS:
1553 case GDK_3BUTTON_PRESS:
1554 gtk_propagate_event (grab_widget, event);
1558 case GDK_KEY_RELEASE:
1561 if (gtk_invoke_key_snoopers (grab_widget, event))
1564 /* else fall through */
1565 case GDK_MOTION_NOTIFY:
1566 case GDK_BUTTON_RELEASE:
1567 case GDK_PROXIMITY_IN:
1568 case GDK_PROXIMITY_OUT:
1569 gtk_propagate_event (grab_widget, event);
1572 case GDK_ENTER_NOTIFY:
1573 if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1575 g_object_ref (event_widget);
1577 gtk_widget_event (grab_widget, event);
1578 if (event_widget == grab_widget)
1579 GTK_PRIVATE_SET_FLAG (event_widget, GTK_LEAVE_PENDING);
1581 g_object_unref (event_widget);
1585 case GDK_LEAVE_NOTIFY:
1586 if (GTK_WIDGET_LEAVE_PENDING (event_widget))
1588 GTK_PRIVATE_UNSET_FLAG (event_widget, GTK_LEAVE_PENDING);
1589 gtk_widget_event (event_widget, event);
1591 else if (GTK_WIDGET_IS_SENSITIVE (grab_widget))
1592 gtk_widget_event (grab_widget, event);
1595 case GDK_DRAG_STATUS:
1596 case GDK_DROP_FINISHED:
1597 _gtk_drag_source_handle_event (event_widget, event);
1599 case GDK_DRAG_ENTER:
1600 case GDK_DRAG_LEAVE:
1601 case GDK_DRAG_MOTION:
1602 case GDK_DROP_START:
1603 _gtk_drag_dest_handle_event (event_widget, event);
1606 g_assert_not_reached ();
1610 tmp_list = current_events;
1611 current_events = g_list_remove_link (current_events, tmp_list);
1612 g_list_free_1 (tmp_list);
1614 if (rewritten_event)
1615 gdk_event_free (rewritten_event);
1630 static GtkWindowGroup *
1631 gtk_main_get_window_group (GtkWidget *widget)
1633 GtkWidget *toplevel = NULL;
1636 toplevel = gtk_widget_get_toplevel (widget);
1638 if (toplevel && GTK_IS_WINDOW (toplevel))
1639 return gtk_window_get_group (GTK_WINDOW (toplevel));
1641 return gtk_window_get_group (NULL);
1646 GtkWidget *old_grab_widget;
1647 GtkWidget *new_grab_widget;
1648 gboolean was_grabbed;
1649 gboolean is_grabbed;
1653 gtk_grab_notify_foreach (GtkWidget *child,
1657 GrabNotifyInfo *info = data;
1659 gboolean was_grabbed, is_grabbed, was_shadowed, is_shadowed;
1661 was_grabbed = info->was_grabbed;
1662 is_grabbed = info->is_grabbed;
1664 info->was_grabbed = info->was_grabbed || (child == info->old_grab_widget);
1665 info->is_grabbed = info->is_grabbed || (child == info->new_grab_widget);
1667 was_shadowed = info->old_grab_widget && !info->was_grabbed;
1668 is_shadowed = info->new_grab_widget && !info->is_grabbed;
1670 g_object_ref (child);
1672 if (was_shadowed != is_shadowed)
1673 _gtk_widget_grab_notify (child, was_shadowed);
1675 if ((was_shadowed || is_shadowed) && GTK_IS_CONTAINER (child))
1676 gtk_container_forall (GTK_CONTAINER (child), gtk_grab_notify_foreach, info);
1678 g_object_unref (child);
1680 info->was_grabbed = was_grabbed;
1681 info->is_grabbed = is_grabbed;
1685 gtk_grab_notify (GtkWindowGroup *group,
1686 GtkWidget *old_grab_widget,
1687 GtkWidget *new_grab_widget)
1690 GrabNotifyInfo info;
1692 if (old_grab_widget == new_grab_widget)
1695 info.old_grab_widget = old_grab_widget;
1696 info.new_grab_widget = new_grab_widget;
1698 g_object_ref (group);
1700 toplevels = gtk_window_list_toplevels ();
1701 g_list_foreach (toplevels, (GFunc)g_object_ref, NULL);
1705 GtkWindow *toplevel = toplevels->data;
1706 toplevels = g_list_delete_link (toplevels, toplevels);
1708 info.was_grabbed = FALSE;
1709 info.is_grabbed = FALSE;
1711 if (group == gtk_window_get_group (toplevel))
1712 gtk_grab_notify_foreach (GTK_WIDGET (toplevel), &info);
1713 g_object_unref (toplevel);
1716 g_object_unref (group);
1720 gtk_grab_add (GtkWidget *widget)
1722 GtkWindowGroup *group;
1723 GtkWidget *old_grab_widget;
1725 g_return_if_fail (widget != NULL);
1727 if (!GTK_WIDGET_HAS_GRAB (widget) && GTK_WIDGET_IS_SENSITIVE (widget))
1729 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_GRAB);
1731 group = gtk_main_get_window_group (widget);
1734 old_grab_widget = (GtkWidget *)group->grabs->data;
1736 old_grab_widget = NULL;
1738 g_object_ref (widget);
1739 group->grabs = g_slist_prepend (group->grabs, widget);
1741 gtk_grab_notify (group, old_grab_widget, widget);
1746 gtk_grab_get_current (void)
1748 GtkWindowGroup *group;
1750 group = gtk_main_get_window_group (NULL);
1753 return GTK_WIDGET (group->grabs->data);
1758 gtk_grab_remove (GtkWidget *widget)
1760 GtkWindowGroup *group;
1761 GtkWidget *new_grab_widget;
1763 g_return_if_fail (widget != NULL);
1765 if (GTK_WIDGET_HAS_GRAB (widget))
1767 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_GRAB);
1769 group = gtk_main_get_window_group (widget);
1770 group->grabs = g_slist_remove (group->grabs, widget);
1773 new_grab_widget = (GtkWidget *)group->grabs->data;
1775 new_grab_widget = NULL;
1777 gtk_grab_notify (group, widget, new_grab_widget);
1779 g_object_unref (widget);
1784 gtk_init_add (GtkFunction function,
1787 GtkInitFunction *init;
1789 init = g_new (GtkInitFunction, 1);
1790 init->function = function;
1793 init_functions = g_list_prepend (init_functions, init);
1797 gtk_key_snooper_install (GtkKeySnoopFunc snooper,
1800 GtkKeySnooperData *data;
1801 static guint snooper_id = 1;
1803 g_return_val_if_fail (snooper != NULL, 0);
1805 data = g_new (GtkKeySnooperData, 1);
1806 data->func = snooper;
1807 data->func_data = func_data;
1808 data->id = snooper_id++;
1809 key_snoopers = g_slist_prepend (key_snoopers, data);
1815 gtk_key_snooper_remove (guint snooper_id)
1817 GtkKeySnooperData *data = NULL;
1820 slist = key_snoopers;
1824 if (data->id == snooper_id)
1827 slist = slist->next;
1832 key_snoopers = g_slist_remove (key_snoopers, data);
1838 gtk_invoke_key_snoopers (GtkWidget *grab_widget,
1842 gint return_val = FALSE;
1844 slist = key_snoopers;
1845 while (slist && !return_val)
1847 GtkKeySnooperData *data;
1850 slist = slist->next;
1851 return_val = (*data->func) (grab_widget, (GdkEventKey*) event, data->func_data);
1858 gtk_quit_add_full (guint main_level,
1859 GtkFunction function,
1860 GtkCallbackMarshal marshal,
1862 GtkDestroyNotify destroy)
1864 static guint quit_id = 1;
1865 GtkQuitFunction *quitf;
1867 g_return_val_if_fail ((function != NULL) || (marshal != NULL), 0);
1869 quitf = g_slice_new (GtkQuitFunction);
1871 quitf->id = quit_id++;
1872 quitf->main_level = main_level;
1873 quitf->function = function;
1874 quitf->marshal = marshal;
1876 quitf->destroy = destroy;
1878 quit_functions = g_list_prepend (quit_functions, quitf);
1884 gtk_quit_destroy (GtkQuitFunction *quitf)
1887 quitf->destroy (quitf->data);
1888 g_slice_free (GtkQuitFunction, quitf);
1892 gtk_quit_destructor (GtkObject **object_p)
1895 gtk_object_destroy (*object_p);
1902 gtk_quit_add_destroy (guint main_level,
1905 GtkObject **object_p;
1907 g_return_if_fail (main_level > 0);
1908 g_return_if_fail (GTK_IS_OBJECT (object));
1910 object_p = g_new (GtkObject*, 1);
1912 g_signal_connect (object,
1914 G_CALLBACK (gtk_widget_destroyed),
1916 gtk_quit_add (main_level, (GtkFunction) gtk_quit_destructor, object_p);
1920 gtk_quit_add (guint main_level,
1921 GtkFunction function,
1924 return gtk_quit_add_full (main_level, function, NULL, data, NULL);
1928 gtk_quit_remove (guint id)
1930 GtkQuitFunction *quitf;
1933 tmp_list = quit_functions;
1936 quitf = tmp_list->data;
1938 if (quitf->id == id)
1940 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1941 g_list_free (tmp_list);
1942 gtk_quit_destroy (quitf);
1947 tmp_list = tmp_list->next;
1952 gtk_quit_remove_by_data (gpointer data)
1954 GtkQuitFunction *quitf;
1957 tmp_list = quit_functions;
1960 quitf = tmp_list->data;
1962 if (quitf->data == data)
1964 quit_functions = g_list_remove_link (quit_functions, tmp_list);
1965 g_list_free (tmp_list);
1966 gtk_quit_destroy (quitf);
1971 tmp_list = tmp_list->next;
1976 gtk_timeout_add_full (guint32 interval,
1977 GtkFunction function,
1978 GtkCallbackMarshal marshal,
1980 GtkDestroyNotify destroy)
1984 GtkClosure *closure;
1986 closure = g_new (GtkClosure, 1);
1987 closure->marshal = marshal;
1988 closure->data = data;
1989 closure->destroy = destroy;
1991 return g_timeout_add_full (0, interval,
1992 gtk_invoke_idle_timeout,
1994 gtk_destroy_closure);
1997 return g_timeout_add_full (0, interval, function, data, destroy);
2001 gtk_timeout_add (guint32 interval,
2002 GtkFunction function,
2005 return g_timeout_add_full (0, interval, function, data, NULL);
2009 gtk_timeout_remove (guint tag)
2011 g_source_remove (tag);
2015 gtk_idle_add_full (gint priority,
2016 GtkFunction function,
2017 GtkCallbackMarshal marshal,
2019 GtkDestroyNotify destroy)
2023 GtkClosure *closure;
2025 closure = g_new (GtkClosure, 1);
2026 closure->marshal = marshal;
2027 closure->data = data;
2028 closure->destroy = destroy;
2030 return g_idle_add_full (priority,
2031 gtk_invoke_idle_timeout,
2033 gtk_destroy_closure);
2036 return g_idle_add_full (priority, function, data, destroy);
2040 gtk_idle_add (GtkFunction function,
2043 return g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, function, data, NULL);
2047 gtk_idle_add_priority (gint priority,
2048 GtkFunction function,
2051 return g_idle_add_full (priority, function, data, NULL);
2055 gtk_idle_remove (guint tag)
2057 g_source_remove (tag);
2061 gtk_idle_remove_by_data (gpointer data)
2063 if (!g_idle_remove_by_data (data))
2064 g_warning ("gtk_idle_remove_by_data(%p): no such idle", data);
2068 gtk_input_add_full (gint source,
2069 GdkInputCondition condition,
2070 GdkInputFunction function,
2071 GtkCallbackMarshal marshal,
2073 GtkDestroyNotify destroy)
2077 GtkClosure *closure;
2079 closure = g_new (GtkClosure, 1);
2080 closure->marshal = marshal;
2081 closure->data = data;
2082 closure->destroy = destroy;
2084 return gdk_input_add_full (source,
2086 (GdkInputFunction) gtk_invoke_input,
2088 (GdkDestroyNotify) gtk_destroy_closure);
2091 return gdk_input_add_full (source, condition, function, data, destroy);
2095 gtk_input_remove (guint tag)
2097 g_source_remove (tag);
2101 gtk_destroy_closure (gpointer data)
2103 GtkClosure *closure = data;
2105 if (closure->destroy)
2106 (closure->destroy) (closure->data);
2111 gtk_invoke_idle_timeout (gpointer data)
2113 GtkClosure *closure = data;
2116 gint ret_val = FALSE;
2117 args[0].name = NULL;
2118 args[0].type = G_TYPE_BOOLEAN;
2119 args[0].d.pointer_data = &ret_val;
2120 closure->marshal (NULL, closure->data, 0, args);
2125 gtk_invoke_input (gpointer data,
2127 GdkInputCondition condition)
2129 GtkClosure *closure = data;
2132 args[0].type = G_TYPE_INT;
2133 args[0].name = NULL;
2134 GTK_VALUE_INT (args[0]) = source;
2135 args[1].type = GDK_TYPE_INPUT_CONDITION;
2136 args[1].name = NULL;
2137 GTK_VALUE_FLAGS (args[1]) = condition;
2138 args[2].type = G_TYPE_NONE;
2139 args[2].name = NULL;
2141 closure->marshal (NULL, closure->data, 2, args);
2145 * gtk_get_current_event:
2147 * Obtains a copy of the event currently being processed by GTK+. For
2148 * example, if you get a "clicked" signal from #GtkButton, the current
2149 * event will be the #GdkEventButton that triggered the "clicked"
2150 * signal. The returned event must be freed with gdk_event_free().
2151 * If there is no current event, the function returns %NULL.
2153 * Return value: a copy of the current event, or %NULL if no current event.
2156 gtk_get_current_event (void)
2159 return gdk_event_copy (current_events->data);
2165 * gtk_get_current_event_time:
2167 * If there is a current event and it has a timestamp, return that
2168 * timestamp, otherwise return %GDK_CURRENT_TIME.
2170 * Return value: the timestamp from the current event, or %GDK_CURRENT_TIME.
2173 gtk_get_current_event_time (void)
2176 return gdk_event_get_time (current_events->data);
2178 return GDK_CURRENT_TIME;
2182 * gtk_get_current_event_state:
2183 * @state: a location to store the state of the current event
2185 * If there is a current event and it has a state field, place
2186 * that state field in @state and return %TRUE, otherwise return
2189 * Return value: %TRUE if there was a current event and it had a state field
2192 gtk_get_current_event_state (GdkModifierType *state)
2194 g_return_val_if_fail (state != NULL, FALSE);
2197 return gdk_event_get_state (current_events->data, state);
2206 * gtk_get_event_widget:
2207 * @event: a #GdkEvent
2209 * If @event is %NULL or the event was not associated with any widget,
2210 * returns %NULL, otherwise returns the widget that received the event
2213 * Return value: the widget that originally received @event, or %NULL
2216 gtk_get_event_widget (GdkEvent *event)
2221 if (event && event->any.window &&
2222 (event->type == GDK_DESTROY || !GDK_WINDOW_DESTROYED (event->any.window)))
2223 gdk_window_get_user_data (event->any.window, (void**) &widget);
2229 gtk_quit_invoke_function (GtkQuitFunction *quitf)
2231 if (!quitf->marshal)
2232 return quitf->function (quitf->data);
2236 gint ret_val = FALSE;
2238 args[0].name = NULL;
2239 args[0].type = G_TYPE_BOOLEAN;
2240 args[0].d.pointer_data = &ret_val;
2241 ((GtkCallbackMarshal) quitf->marshal) (NULL,
2249 * gtk_propagate_event:
2250 * @widget: a #GtkWidget
2253 * Sends an event to a widget, propagating the event to parent widgets
2254 * if the event remains unhandled. Events received by GTK+ from GDK
2255 * normally begin in gtk_main_do_event(). Depending on the type of
2256 * event, existence of modal dialogs, grabs, etc., the event may be
2257 * propagated; if so, this function is used. gtk_propagate_event()
2258 * calls gtk_widget_event() on each widget it decides to send the
2259 * event to. So gtk_widget_event() is the lowest-level function; it
2260 * simply emits the "event" and possibly an event-specific signal on a
2261 * widget. gtk_propagate_event() is a bit higher-level, and
2262 * gtk_main_do_event() is the highest level.
2264 * All that said, you most likely don't want to use any of these
2265 * functions; synthesizing events is rarely needed. Consider asking on
2266 * the mailing list for better ways to achieve your goals. For
2267 * example, use gdk_window_invalidate_rect() or
2268 * gtk_widget_queue_draw() instead of making up expose events.
2272 gtk_propagate_event (GtkWidget *widget,
2277 g_return_if_fail (GTK_IS_WIDGET (widget));
2278 g_return_if_fail (event != NULL);
2280 handled_event = FALSE;
2282 g_object_ref (widget);
2284 if ((event->type == GDK_KEY_PRESS) ||
2285 (event->type == GDK_KEY_RELEASE))
2287 /* Only send key events within Window widgets to the Window
2288 * The Window widget will in turn pass the
2289 * key event on to the currently focused widget
2294 window = gtk_widget_get_toplevel (widget);
2295 if (window && GTK_IS_WINDOW (window))
2297 /* If there is a grab within the window, give the grab widget
2298 * a first crack at the key event
2300 if (widget != window && GTK_WIDGET_HAS_GRAB (widget))
2301 handled_event = gtk_widget_event (widget, event);
2305 window = gtk_widget_get_toplevel (widget);
2306 if (window && GTK_IS_WINDOW (window))
2308 if (GTK_WIDGET_IS_SENSITIVE (window))
2309 gtk_widget_event (window, event);
2313 handled_event = TRUE; /* don't send to widget */
2317 /* Other events get propagated up the widget tree
2318 * so that parents can see the button and motion
2319 * events of the children.
2327 /* Scroll events are special cased here because it
2328 * feels wrong when scrolling a GtkViewport, say,
2329 * to have children of the viewport eat the scroll
2332 if (!GTK_WIDGET_IS_SENSITIVE (widget))
2333 handled_event = event->type != GDK_SCROLL;
2335 handled_event = gtk_widget_event (widget, event);
2337 tmp = widget->parent;
2338 g_object_unref (widget);
2342 if (!handled_event && widget)
2343 g_object_ref (widget);
2349 g_object_unref (widget);
2354 gtk_error (gchar *str)
2360 gtk_warning (gchar *str)
2366 gtk_message (gchar *str)
2372 gtk_print (gchar *str)
2374 static GtkWidget *window = NULL;
2375 static GtkWidget *text;
2376 static int level = 0;
2380 GtkWidget *hscrollbar;
2381 GtkWidget *vscrollbar;
2382 GtkWidget *separator;
2387 fputs (str, stdout);
2394 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
2396 gtk_signal_connect (GTK_OBJECT (window), "destroy",
2397 (GtkSignalFunc) gtk_widget_destroyed,
2400 gtk_window_set_title (GTK_WINDOW (window), "Messages");
2402 box1 = gtk_vbox_new (FALSE, 0);
2403 gtk_container_add (GTK_CONTAINER (window), box1);
2404 gtk_widget_show (box1);
2407 box2 = gtk_vbox_new (FALSE, 10);
2408 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
2409 gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0);
2410 gtk_widget_show (box2);
2413 table = gtk_table_new (2, 2, FALSE);
2414 gtk_table_set_row_spacing (GTK_TABLE (table), 0, 2);
2415 gtk_table_set_col_spacing (GTK_TABLE (table), 0, 2);
2416 gtk_box_pack_start (GTK_BOX (box2), table, TRUE, TRUE, 0);
2417 gtk_widget_show (table);
2419 text = gtk_text_new (NULL, NULL);
2420 gtk_text_set_editable (GTK_TEXT (text), FALSE);
2421 gtk_table_attach_defaults (GTK_TABLE (table), text, 0, 1, 0, 1);
2422 gtk_widget_show (text);
2423 gtk_widget_realize (text);
2425 hscrollbar = gtk_hscrollbar_new (GTK_TEXT (text)->hadj);
2426 gtk_table_attach (GTK_TABLE (table), hscrollbar, 0, 1, 1, 2,
2427 GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
2428 gtk_widget_show (hscrollbar);
2430 vscrollbar = gtk_vscrollbar_new (GTK_TEXT (text)->vadj);
2431 gtk_table_attach (GTK_TABLE (table), vscrollbar, 1, 2, 0, 1,
2432 GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
2433 gtk_widget_show (vscrollbar);
2435 separator = gtk_hseparator_new ();
2436 gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0);
2437 gtk_widget_show (separator);
2440 box2 = gtk_vbox_new (FALSE, 10);
2441 gtk_container_set_border_width (GTK_CONTAINER (box2), 10);
2442 gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0);
2443 gtk_widget_show (box2);
2446 button = gtk_button_new_with_label ("close");
2447 gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
2448 (GtkSignalFunc) gtk_widget_hide,
2449 GTK_OBJECT (window));
2450 gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0);
2451 GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
2452 gtk_widget_grab_default (button);
2453 gtk_widget_show (button);
2457 gtk_text_insert (GTK_TEXT (text), NULL, NULL, NULL, str, -1);
2460 if (!GTK_WIDGET_VISIBLE (window))
2461 gtk_widget_show (window);
2466 _gtk_boolean_handled_accumulator (GSignalInvocationHint *ihint,
2467 GValue *return_accu,
2468 const GValue *handler_return,
2471 gboolean continue_emission;
2472 gboolean signal_handled;
2474 signal_handled = g_value_get_boolean (handler_return);
2475 g_value_set_boolean (return_accu, signal_handled);
2476 continue_emission = !signal_handled;
2478 return continue_emission;
2481 #define __GTK_MAIN_C__
2482 #include "gtkaliasdef.c"