VB6 XP系统下控制打印机端口,本人做过试验,工厂使用过,可以替代上几百元的IO卡使用,包含D-VB6 XP systems control the printer port, I did test, the factory used, can replace hundreds of dollars on the IO card that contains DLL

键盘指示灯显示的VB程序，并包含了应用程序与DLL，DLL与DRV之间通讯的例子，重点突出了VB读写注册表和驱动程序读写注册表的方法。-A VB6 example for read keyboard light status,including the way VB and windows drivers read or write regtable,some app2dll,dll2drv example also collected.