--- /dev/null
+#ifndef INPUT_H
+#define INPUT_H
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+#include <string.h>
+
+#include "window.h"
+#include "event.h"
+
+G_GNUC_INTERNAL gboolean on_window_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win);
+G_GNUC_INTERNAL void after_window_insert_text(GtkTextBuffer *textbuffer, GtkTextIter *location, gchar *text, gint len, winid_t win);
+G_GNUC_INTERNAL void on_input_entry_activate(GtkEntry *input_entry, winid_t win);
+
+#endif