一个好用的DLL打印工程,可以选中打印机直接打印.同时还可以判断是否打印机缺纸．详情请看源代码．你可以用在ＰＯＳ或排队机上．-a handy DLL Print works selected printer can be printed directly. They could also determine whether the printer is empty. Look at the details of the source c