函数由一句或多句代码组成，可以实现某个特定的功能。使用函数可以使代码更加易读、易懂，加快编程速度及减少重复代码。过程与函数类似，过程与函数最重要的区别在于，过程没有返回值，而函数能有返回值。 　　在Delphi 7.0中，已为我们定义好了非

Packet : delphi常用函数手册.doc.doc filelist

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