-// Some deprecated GTK+ prototypes we still use often
-// FIXME: Don't use them if possible.
-G_BEGIN_DECLS
-
-// Should use gtk_image_new, but the mask seems to be handled different,
-// and we need to migrate
-GtkWidget* gtk_pixmap_new (GdkPixmap *pixmap,
- GdkBitmap *mask);
-
-// Deprecated since GTK+-1.3.7:
-// Trivial wrapper around gtk_window_move, with some side effects we seem to rely on
-void gtk_widget_set_uposition (GtkWidget *widget,
- gint x,
- gint y);
-
-// We rely on the allow_shrink parameter in one place
-void gtk_window_set_policy (GtkWindow *window,
- gint allow_shrink,
- gint allow_grow,
- gint auto_shrink);
-
-G_END_DECLS
-
-//-----------------------------------------------------------------------------
-// idle system
-//-----------------------------------------------------------------------------
-
-extern void wxapp_install_idle_handler();
-extern bool g_isIdle;
-
-//-----------------------------------------------------------------------------
-// Misc. functions
-//-----------------------------------------------------------------------------
-
-// Needed for implementing e.g. combobox on wxGTK within a modal dialog.
-void wxAddGrab(wxWindow* window);
-void wxRemoveGrab(wxWindow* window);
-
-// Escapes string so that it is valid Pango markup XML string:
-WXDLLIMPEXP_CORE wxString wxEscapeStringForPangoMarkup(const wxString& str);
-
-// The declaration for gtk_icon_size_lookup was accidentally ifdefed out in
-// GTK+ 2.1.0 which Sun seem to have shipped with some versions of JDS
-// for Solaris 9 x86.
-#ifdef NEED_GTK_ICON_SIZE_LOOKUP
-extern "C" gboolean gtk_icon_size_lookup (GtkIconSize size,
- gint *width,
- gint *height);
+// Define a macro for converting wxString to char* in appropriate encoding for
+// the file names.
+#ifdef G_OS_WIN32
+ // Under MSW, UTF-8 file name encodings are always used.
+ #define wxGTK_CONV_FN(s) (s).utf8_str()
+#else
+ // Under Unix use GLib file name encoding (which is also UTF-8 by default
+ // but may be different from it).
+ #define wxGTK_CONV_FN(s) (s).fn_str()