Window interactive bases on advanced computer vision technology to convert touch signal of the finger to direct mouse control. It is a natural interaction. Window interactive is very adaptable to various environments; unlike ordinary touching screen, it is not subject to natural conditions (e.g., temperature, humidity) of the surroundings. Any interactive size can be customed. With the system, users can not only watch high-quality projection image, but also inquire certain information of his own interest by touching the glass cover surface. The system will display pre-set information automatically while it has been idle for a certain period, and switch into the interactive mode when it is touched.