在BorlandC3.1环境下实现鼠标的建立，其中，可以改变主函数中Cursor二维数组的鼠标数字模型，来创建其他的鼠标形状(In the BorlandC3.1 environment to achieve the establishment of the mouse, which can change the main function of the Cursor two-dimensional array of mouse digital models, to create other mouse shapes)