Nick Schermer
13 years ago
9 changed files with 343 additions and 66 deletions
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/* $Id$ */ |
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/*
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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* more details. |
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* |
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* You should have received a copy of the GNU General Public License along with |
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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* Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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#include <gdk/gdk.h> |
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#include <gmodule.h> |
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#include <libxfce4util/libxfce4util.h> |
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#include <libxfce4panel/libxfce4panel.h> |
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#include <libxfce4panel/xfce-panel-plugin-provider.h> |
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#include <wrapper/wrapper-module.h> |
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static void wrapper_module_class_init (WrapperModuleClass *klass); |
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static void wrapper_module_init (WrapperModule *module); |
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static gboolean wrapper_module_load (GTypeModule *type_module); |
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static void wrapper_module_unload (GTypeModule *type_module); |
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struct _WrapperModuleClass |
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{ |
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GTypeModuleClass __parent__; |
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}; |
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struct _WrapperModule |
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{ |
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GTypeModule __parent__; |
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/* plugin library */ |
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GModule *library; |
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/* plugin init function */ |
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PluginConstructFunc construct_func; |
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/* the library location */ |
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const gchar *filename; |
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}; |
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G_DEFINE_TYPE (WrapperModule, wrapper_module, G_TYPE_TYPE_MODULE); |
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static void |
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wrapper_module_class_init (WrapperModuleClass *klass) |
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{ |
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GTypeModuleClass *gtype_module_class; |
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gtype_module_class = G_TYPE_MODULE_CLASS (klass); |
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gtype_module_class->load = wrapper_module_load; |
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gtype_module_class->unload = wrapper_module_unload; |
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} |
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static void |
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wrapper_module_init (WrapperModule *module) |
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{ |
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/* initialize */ |
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module->library = NULL; |
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module->construct_func = NULL; |
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module->filename = NULL; |
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} |
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static gboolean |
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wrapper_module_load (GTypeModule *type_module) |
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{ |
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WrapperModule *module = WRAPPER_MODULE (type_module); |
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PluginRegisterTypesFunc register_func; |
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panel_return_val_if_fail (WRAPPER_IS_MODULE (module), FALSE); |
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panel_return_val_if_fail (G_IS_TYPE_MODULE (module), FALSE); |
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/* load the module */ |
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module->library = g_module_open (module->filename, G_MODULE_BIND_LOCAL); |
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if (G_UNLIKELY (module->library == NULL)) |
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{ |
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g_critical ("Failed to load plugin '%s': %s", type_module->name, g_module_error ()); |
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return FALSE; |
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} |
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/* link the required construct function */ |
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if (!g_module_symbol (module->library, "xfce_panel_plugin_construct", (gpointer) &module->construct_func)) |
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{ |
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g_critical ("Plugin '%s' lacks required symbol: %s", type_module->name, g_module_error ()); |
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/* unload */ |
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wrapper_module_unload (type_module); |
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return FALSE; |
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} |
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/* run the type register function if available */ |
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if (g_module_symbol (module->library, "xfce_panel_plugin_register_types", (gpointer) ®ister_func)) |
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(*register_func) (type_module); |
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return TRUE; |
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} |
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static void |
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wrapper_module_unload (GTypeModule *type_module) |
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{ |
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WrapperModule *module = WRAPPER_MODULE (type_module); |
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panel_return_if_fail (WRAPPER_IS_MODULE (module)); |
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panel_return_if_fail (G_IS_TYPE_MODULE (module)); |
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/* unload the library */ |
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g_module_close (module->library); |
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/* reset plugin state */ |
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module->library = NULL; |
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module->construct_func = NULL; |
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} |
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WrapperModule * |
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wrapper_module_new (const gchar *filename, |
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const gchar *name) |
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{ |
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WrapperModule *module = NULL; |
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panel_return_val_if_fail (filename != NULL && *filename != '\0', NULL); |
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/* test if the library exists */ |
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if (G_LIKELY (g_file_test (filename, G_FILE_TEST_EXISTS))) |
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{ |
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/* create new module */ |
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module = g_object_new (WRAPPER_TYPE_MODULE, NULL); |
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/* set the module name */ |
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g_type_module_set_name (G_TYPE_MODULE (module), name); |
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/* set library location */ |
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module->filename = filename; |
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} |
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return module; |
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} |
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XfcePanelPluginProvider * |
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wrapper_module_create_plugin (WrapperModule *module, |
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const gchar *name, |
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const gchar *id, |
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const gchar *display_name, |
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gchar **arguments) |
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{ |
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XfcePanelPluginProvider *provider = NULL; |
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panel_return_val_if_fail (WRAPPER_IS_MODULE (module), NULL); |
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panel_return_val_if_fail (name != NULL && *name != '\0', NULL); |
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panel_return_val_if_fail (id != NULL && *id != '\0', NULL); |
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/* increase the module use count */ |
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g_type_module_use (G_TYPE_MODULE (module)); |
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if (G_LIKELY (module->library)) |
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{ |
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/* debug check */ |
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panel_return_val_if_fail (module->construct_func != NULL, NULL); |
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/* create a new panel plugin */ |
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provider = (*module->construct_func) (name, id, display_name, arguments, gdk_screen_get_default ()); |
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} |
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else |
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{ |
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/* decrease the module use count */ |
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g_type_module_unuse (G_TYPE_MODULE (module)); |
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/* this should never happen */ |
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panel_assert_not_reached (); |
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} |
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return provider; |
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} |
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@ -0,0 +1,50 @@ |
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/* $Id$ */ |
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/*
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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* more details. |
|||
* |
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* You should have received a copy of the GNU General Public License along with |
|||
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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* Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#ifndef __WRAPPER_MODULE_H__ |
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#define __WRAPPER_MODULE_H__ |
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#include <gtk/gtk.h> |
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#include <libxfce4panel/libxfce4panel.h> |
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#include <libxfce4panel/xfce-panel-plugin-provider.h> |
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G_BEGIN_DECLS |
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typedef struct _WrapperModuleClass WrapperModuleClass; |
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typedef struct _WrapperModule WrapperModule; |
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#define WRAPPER_TYPE_MODULE (wrapper_module_get_type ()) |
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#define WRAPPER_MODULE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), WRAPPER_TYPE_MODULE, WrapperModule)) |
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#define WRAPPER_MODULE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), WRAPPER_TYPE_MODULE, WrapperModuleClass)) |
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#define WRAPPER_IS_MODULE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), WRAPPER_TYPE_MODULE)) |
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#define WRAPPER_IS_MODULE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), WRAPPER_TYPE_MODULE)) |
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#define WRAPPER_MODULE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), WRAPPER_TYPE_MODULE, WrapperModuleClass)) |
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GType wrapper_module_get_type (void) G_GNUC_CONST; |
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WrapperModule *wrapper_module_new (const gchar *filename, |
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const gchar *name); |
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XfcePanelPluginProvider *wrapper_module_create_plugin (WrapperModule *module, |
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const gchar *name, |
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const gchar *id, |
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const gchar *display_name, |
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gchar **arguments); |
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G_END_DECLS |
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#endif /* !__WRAPPER_MODULE_H__ */ |
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