demos: Mark non-static signal handler symbols for export

The symbols in the .ui files for the signal handlers and functions must be
exported so that the system can pick them up during execution.

Fixes #3918.

demos/gtk-demo/font_features.c

@@ -1136,7 +1136,7 @@ done:
   g_free (design_coords);
 }
 
-void
+G_MODULE_EXPORT void
 font_features_font_changed (void)
 {
   update_script_combo ();
@@ -1144,14 +1144,14 @@ font_features_font_changed (void)
   update_font_variations ();
 }
 
-void
+G_MODULE_EXPORT void
 font_features_script_changed (void)
 {
   update_features ();
   update_display ();
 }
 
-void
+G_MODULE_EXPORT void
 font_features_reset_features (void)
 {
   GList *l;
@@ -1197,7 +1197,7 @@ switch_to_label (void)
   update_display ();
 }
 
-void
+G_MODULE_EXPORT void
 font_features_toggle_edit (void)
 {
   if (strcmp (gtk_stack_get_visible_child_name (GTK_STACK (stack)), "label") == 0)
@@ -1206,7 +1206,7 @@ font_features_toggle_edit (void)
     switch_to_label ();
 }
 
-void
+G_MODULE_EXPORT void
 font_features_stop_edit (void)
 {
   g_signal_emit_by_name (edit_toggle, "clicked");

demos/gtk-demo/listview_filebrowser.c

@@ -34,6 +34,7 @@ enum {
 };
 
 #define FILE_BROWSER_TYPE_VIEW (file_browser_view_get_type ())
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE (FileBrowserView, file_browser_view, FILE_BROWSER, VIEW, GObject);
 
 G_DEFINE_TYPE (FileBrowserView, file_browser_view, G_TYPE_OBJECT);
@@ -159,7 +160,7 @@ static void file_browser_view_init (FileBrowserView *self)
 {
 }
 
-char *
+G_MODULE_EXPORT char *
 filebrowser_get_display_name (GObject *object,
                               GFileInfo *info)
 {
@@ -169,7 +170,7 @@ filebrowser_get_display_name (GObject *object,
   return g_strdup (g_file_info_get_attribute_string (info, "standard::display-name"));
 }
 
-char *
+G_MODULE_EXPORT char *
 filebrowser_get_content_type (GObject *object,
                               GFileInfo *info)
 {
@@ -179,7 +180,7 @@ filebrowser_get_content_type (GObject *object,
   return g_strdup (g_file_info_get_attribute_string (info, "standard::content-type"));
 }
 
-char *
+G_MODULE_EXPORT char *
 filebrowser_get_size (GObject *object,
                       GFileInfo *info)
 {
@@ -189,7 +190,7 @@ filebrowser_get_size (GObject *object,
   return g_format_size (g_file_info_get_attribute_uint64 (info, "standard::size"));
 }
 
-GIcon *
+G_MODULE_EXPORT GIcon *
 filebrowser_get_icon (GObject *object,
                       GFileInfo *info)
 {
@@ -206,7 +207,7 @@ filebrowser_get_icon (GObject *object,
   return icon;
 }
 
-void
+G_MODULE_EXPORT void
 filebrowser_up_clicked_cb (GtkButton        *button,
                            GtkDirectoryList *list)
 {
@@ -219,7 +220,7 @@ filebrowser_up_clicked_cb (GtkButton        *button,
   gtk_directory_list_set_file (list, file);
 }
 
-void
+G_MODULE_EXPORT void
 filebrowser_view_activated_cb (GtkGridView      *view,
                                guint             pos,
                                GtkDirectoryList *list)

demos/gtk-demo/shortcuts.c

@@ -25,43 +25,43 @@ show_shortcuts (GtkWidget   *window,
   g_object_unref (builder);
 }
 
-void
+G_MODULE_EXPORT void
 shortcuts_builder_shortcuts (GtkWidget *window)
 {
   show_shortcuts (window, "shortcuts-builder", NULL);
 }
 
-void
+G_MODULE_EXPORT void
 shortcuts_gedit_shortcuts (GtkWidget *window)
 {
   show_shortcuts (window, "shortcuts-gedit", NULL);
 }
 
-void
+G_MODULE_EXPORT void
 shortcuts_clocks_shortcuts (GtkWidget *window)
 {
   show_shortcuts (window, "shortcuts-clocks", NULL);
 }
 
-void
+G_MODULE_EXPORT void
 shortcuts_clocks_shortcuts_stopwatch (GtkWidget *window)
 {
   show_shortcuts (window, "shortcuts-clocks", "stopwatch");
 }
 
-void
+G_MODULE_EXPORT void
 shortcuts_boxes_shortcuts (GtkWidget *window)
 {
   show_shortcuts (window, "shortcuts-boxes", NULL);
 }
 
-void
+G_MODULE_EXPORT void
 shortcuts_boxes_shortcuts_wizard (GtkWidget *window)
 {
   show_shortcuts (window, "shortcuts-boxes", "wizard");
 }
 
-void
+G_MODULE_EXPORT void
 shortcuts_boxes_shortcuts_display (GtkWidget *window)
 {
   show_shortcuts (window, "shortcuts-boxes", "display");

demos/gtk-demo/spinbutton.c

@@ -12,7 +12,7 @@
 #include <math.h>
 #include <stdlib.h>
 
-int
+G_MODULE_EXPORT int
 spinbutton_hex_spin_input (GtkSpinButton *spin_button,
                            double        *new_val)
 {
@@ -29,7 +29,7 @@ spinbutton_hex_spin_input (GtkSpinButton *spin_button,
     return TRUE;
 }
 
-int
+G_MODULE_EXPORT int
 spinbutton_hex_spin_output (GtkSpinButton *spin_button)
 {
   GtkAdjustment *adjustment;
@@ -49,7 +49,7 @@ spinbutton_hex_spin_output (GtkSpinButton *spin_button)
   return TRUE;
 }
 
-int
+G_MODULE_EXPORT int
 spinbutton_time_spin_input (GtkSpinButton *spin_button,
                             double        *new_val)
 {
@@ -88,7 +88,7 @@ spinbutton_time_spin_input (GtkSpinButton *spin_button,
   return TRUE;
 }
 
-int
+G_MODULE_EXPORT int
 spinbutton_time_spin_output (GtkSpinButton *spin_button)
 {
   GtkAdjustment *adjustment;
@@ -122,7 +122,7 @@ static const char *month[12] = {
   "December"
 };
 
-int
+G_MODULE_EXPORT int
 spinbutton_month_spin_input (GtkSpinButton *spin_button,
                              double        *new_val)
 {
@@ -151,7 +151,7 @@ spinbutton_month_spin_input (GtkSpinButton *spin_button,
   return TRUE;
 }
 
-int
+G_MODULE_EXPORT int
 spinbutton_month_spin_output (GtkSpinButton *spin_button)
 {
   GtkAdjustment *adjustment;