Borland公司的天才设计师们用画布（Tcanvas）对象封装了Windows的大部分图形输出功能，这使得我们可以通过他以更直观的方式和Windows的屏幕打交道，而不必关心令人头疼的WindowsAPI函数。下面的一小段程序就可以实现整个屏幕的图象拷贝了。

-Borland's gifted designers use canvas (Tcanvas) of the object Packaging Win dows of the most graphic output capabilities. This makes us through him in a more intuitive way to the screen and Windows deal and does not have to care about the cause headaches windows API function. Below a small procedure can be achieved entire screen copy of the image.