+ * @SINCE_1_9.27
+ * @param[in] source source actor to be used for capture.
+ * This source must be added on the window in advance.
+ * @param[in] position top-left position of area to be captured
+ * this position is defined in the window.
+ * @param[in] size captured size.
+ * @param[in] path image file path to be saved as a file.
+ * If path is empty string, the captured result is not be saved as a file.
+ * @param[in] clearColor background color of captured scene
+ * @note suppose that we want to capture actor 'A'. And, the actor 'A' is overlapped by another actor 'B' that is not a child of 'A'.
+ * in this case, if source is root of scene, the captured image includes a part of actor 'B' on the 'A'.
+ * however, if source is just actor 'A', the result includes only 'A'.
+ */
+ void Start( Actor source, const Vector2& position, const Vector2& size, const std::string &path, const Vector4& clearColor );
+
+ /**
+ * @brief Start capture and save the image as a file.
+ *