liangguoping的博客

Virtual Serial Port Driver 7.2.308 + vspdctl.dll 激活 VSPD7.2.308 注册 Serial port emulator by Eltima Software allows creating a large number of virtual COM ports and gives you great possibility to emulate serial port behavior fully. Virtual Serial Port Driver is not just a simple COM port emulator - it provides flexible port creation, management, and removal, allows testing the software, supports control lines and high speed of data transfer with virtual port. The applications can exchange data on virtual ports through virtual null-modem cable. The data sent from one port to another will be received momentarily.

Option Explicit '------------------------------------------------------------------------------- ' ' This VB module is a collection of routines to perform serial port I/O without ' using the Microsoft Comm Control component. This module uses the Windows API ' to perform the overlapped I/O operations necessary for serial communications. ' ' The routine can handle up to 4 serial ports which are identified with a ' Port ID. ' ' All routines (with the exception of CommRead and CommWrite) return an error ' code or 0 if no error occurs. The routine CommGetError can be used to get ' the complete error message. '------------------------------------------------------------------------------- '------------------------------------------------------------------------------- ' Public Constants '------------------------------------------------------------------------------- ' Output Control Lines (CommSetLine) Const LINE_BREAK = 1 Const LINE_DTR = 2 Const LINE_RTS = 3 ' Input Control Lines (CommGetLine) Const LINE_CTS = &H10& Const LINE_DSR = &H20& Const LINE_RING = &H40& Const LINE_RLSD = &H80& Const LINE_CD = &H80& '------------------------------------------------------------------------------- ' System Constants '------------------------------------------------------------------------------- Private Const ERROR_IO_INCOMPLETE = 996& Private Const ERROR_IO_PENDING = 997 Private Const GENERIC_READ = &H80000000 Private Const GENERIC_WRITE = &H40000000 Private Const FILE_ATTRIBUTE_NORMAL = &H80 Private Const FILE_FLAG_OVERLAPPED = &H40000000 Private Const FORMAT_MESSAGE_FROM_SYSTEM = &H1000 Private Const OPEN_EXISTING = 3 ' COMM Functions Private Const MS_CTS_ON = &H10& Private Const MS_DSR_ON = &H20& Private Const MS_RING_ON = &H40& Private Const MS_RLSD_ON = &H80& Private Const PURGE_RXABORT = &H2 Private Const PURGE_RXCLEAR = &H8 Private Const PURGE_TXABORT = &H1 Private Const PURGE_TXCLEAR = &H4 ' COMM Escape Functions Private Const CLRBREAK = 9 Private Const CLRDTR

ASP.NET开发实战详解:入门、模块、系统 光盘源文件

ASP.NET开发实战详解：入门、模块、系统 光盘文件

ASP.NET开发实战详解:入门、模块、系统胡勇辉 曹倬皇 兰湘涛 等编著电工工业出版社