attach_background_to_window附加背景到窗口attach_drawing_object_to_window附加绘制对象到窗口clear_drawing_object清除绘制对象create_drawing_object_circle创建绘制对象圆create_drawing_object_circle_sector创建绘制对象圆形扇区create_drawing_object_ellipse创建绘制对象椭圆create_drawing_object_ellipse_sector创建绘制对象椭圆扇区create_drawing_object_line创建绘制对象线create_drawing_object_rectangle1创建绘制对象矩形1create_drawing_object_rectangle2创建绘制对象矩形2create_drawing_object_text创建绘制对象文本create_drawing_object_xld创建绘制对象扩展线描述detach_background_from_window从窗口中分离背景detach_drawing_object_from_window从窗口中分离绘制对象get_drawing_object_iconic获取绘制对象图标get_drawing_object_params获取绘制对象参数get_window_background_image获取窗口背景图像set_content_update_callback设置内容更新回调set_drawing_object_callback设置绘制对象回调set_drawing_object_params设置绘制对象参数set_drawing_object_xld设置绘制对象扩展线描述