在窗口的一个区域进行鼠标操作 ：mouseEnter,mouseExit、mousePress、mouseDrage、mouseClick。在窗口的另一个区域以文字显示鼠标所进行的相应操作。另外当鼠标进行mousePress、mouseDrage、mouseClick操作时，将显示一个图片。当鼠标拖拉时，图片随鼠标移动。-Mouse operation in a region of the window: mouseEnter, mouseExit, mousePress, mouseDrage, mouseClick. The text in another area of the window to display the corresponding operation of the mouse. In addition, when mouse mousePress mouseDrage, mouseClick operating, will display an image. When the mouse while dragging the picture with the mouse movement.