-static void key_clbk(GLFWwindow *win, int key, int scancode, int action, int mods);
-static void motion_clbk(GLFWwindow *win, double x, double y);
-static void mouse_clbk(GLFWwindow *win, int button, int action, int mods);
+
+static void clbk_key(GLFWwindow *win, int key, int scancode, int action, int mods);
+static void clbk_motion(GLFWwindow *win, double x, double y);
+static void clbk_mouse(GLFWwindow *win, int button, int action, int mods);
+static void clbk_reshape(GLFWwindow *win, int width, int height);