本文目录一览：
vspd未破解过期了怎么办？
如果未破解它直接就过期了，那你可以直接在续费嘛，说不定他可以继续用。
vspd无法删除创建的虚拟串口对
右击计算机--管理--设备管理器--端口。可以看到配对的串口上有个黄色的感叹号。
在VSPD里点击add pair，看看，是不是又多了一对，但是这一对没有感叹号，点击delete pair是可以删除的。
这时右击感叹号图标，把它卸载掉，然后在VSPD里在add pair。（一定要再新建一对）。这时所有的感叹号都没了，恭喜你可以delete pair了。
如何应用.dll文件破解虚拟串口
网上搜索一番，主要有VSPM和VSPD，前者是在WIN7前使用稳定，后者在WIN7中使用稳定。我的电脑是WIN7_64的，所以选用了VSPD7。于是下了个VSPD7.1的安装包，安装完成后，利用软件界面就可以创建相应的虚拟COM口了。具体如何使用，可以参看这篇文章《虚拟串口VSPD的使用方法》。记住一点，VSPD的COM通信是成对的，一个用于接收数据，一个用于发送数据。
有了虚拟COM口后，就是写一个DEMO进行测试。具体可以参看这篇文件章《win7系统下用vspd软件进行串口编程实例》。
当虚拟COM口可以实现通讯之后，就想着我们的程序是依赖于这个VSPD安装包的，那如果我们是否可以不依赖呢？有两种方案：
方案一：自己写一个虚拟COM的驱动，然后里面实现。有兴趣的可以参看该文《开发虚拟串口驱动程序》。
方案二：VSPD安装包是一个安装程序，为了实现虚拟COM，必然会有相应的驱动。如果我们能够找到这个驱动并安装，之后用相应的接口来调用，或是可行。
方案一想了，但自认还没有这个能耐，于是果断放弃，退而选方案二。那么方案二要实现，首先要解决的问题是接口的调用，因为驱动程序即使不能做到自己安装，但还是可以通过VSPD安装包的安装来解决，那么VSPD中有没有提供这样的接口呢？
查看VSPD的用户手册(User Manual)，里面果然有相应的接口(在Using serial port driver in your program下的Functions中)，于是有C#写了相应的调用，下面是代码。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
//Add
using System.Runtime.InteropServices;
namespace Anser.U2Simulator.Model
{
public class VSPD
{
//[DllImport("VSPDCTL.dll", EntryPoint = "CreatePair", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
//public static extern bool CreatePair(byte[] comName1, byte[] comName2);
/// summary
/// CreatePair creates a pair of virtual serial ports with given names.
/// It accepts two null-terminated strings determining which ports should be created as input.
/// For example, "COM5" and "COM6".
/// /summary
/// param name="comName1"A null-terminated string that defines the name of the first port in a pair/param
/// param name="comName2"A null-terminated string that defines the name of the second port in a pair/param
/// returnsCreatePair returns TRUE if virtual serial pair was created successfully and FALSE otherwise/returns
[DllImport("vspdctl.dll")]
public static extern bool CreatePair(string comName1, string comName2);
/// summary
/// DeletePair deletes a pair of virtual serial ports with a given name.
/// As input it takes name of any virtual serial port in a pair.
/// For example, if you want to remove pair named "COM5"-"COM6",
/// you can pass either "COM5" or "COM6" as argument to DeletePair function.
/// /summary
/// param name="comName" A null-terminated string that defines one of the two port names in a pair you want to delete /param
/// returnsDeletePair returns TRUE if virtual serial pair was successfully deleted and FALSE otherwise/returns
[DllImport("vspdctl.dll")]
public static extern bool DeletePair(string comName);
/// summary
/// DeleteAll deletes all virtual serial ports currently present in a system. It accepts no arguments at input.
/// /summary
/// returnsDeleteAll returns TRUE if all virtual serial pairs were successfully deleted and FALSE otherwise/returns
[DllImport("vspdctl.dll")]
public static extern bool DeleteAll();
[DllImport("vspdctl.dll")]
public static extern bool SetStrictBaudrateName(string comName, bool isStrictBaudrate);
[DllImport("vspdctl.dll")]
public static extern bool SetStrictBaudrateHandle(IntPtr handle, bool isStrictBaudrate);
/// summary
/// SetStrictBaudrate enables/disables full baudrate emulation,
/// needs the name of one of the paired virtual ports and boolean parameter
/// that defines if strict baudrate emulation should be enabled or not.
/// /summary
/// param name="comName"A null-terminated string that defines one of the two port names in a pair /param
/// param name="isStrictBaudrate"A boolean variable which should be TRUE
/// if you want to enable strict baudrate emulation and FALSE if you want to disable it/param
/// returnsSetStrictBaudrate returns TRUE if strict baudrate emulation was successfully enabled and FALSE otherwise/returns
[DllImport("vspdctl.dll")]
public static extern bool SetStrictBaudrate(string comName, bool isStrictBaudrate);
/// summary
/// SetBreak enables/disables line break emulation in virtual serial ports.
/// /summary
/// param name="comName"A null-terminated string that defines one of the two port names in a pair/param
/// param name="isBreak" A boolean variable should be TRUE if you want to emulate connection break and FALSE if you want to re-establish it /param
/// returnsSetBreak returns TRUE if line break emulation was successfully enabled and FALSE otherwise./returns
[DllImport("vspdctl.dll")]
public static extern bool SetBreak(string comName, bool isBreak);
/// summary
/// QueryBus: QueryBus sends request to get complete information from the virtual serial bus installed by VSPD.
/// /summary
/// param name="inBufferPtr"A pointer to VSBUS_QUERY or VSBUS_QUERY_EX structures.
/// If you want to get information about all current virtual serial ports
/// then use VSBUS_QUERY structure
/// and if you want to get extended information
/// about single virtual serial pair then use VSBUS_QUERY_EX structure./param
/// param name="inBufferSize"/param
/// param name="outBufferPtr"/param
/// param name="outBufferSize"A pointer to either PORT_INFORMATION or PORT_INFORMATION_EX structures list.
/// If you have used VSBUS_QUERY than you should get PORT_INFORMATION list
/// and if you used VSBUS_QUERY_EX then you should get PORT_INFORMATION_EX./param
/// returns/returns
[DllImport("vspdctl.dll")]
public static extern bool QueryBus(IntPtr inBufferPtr, long inBufferSize, IntPtr outBufferPtr, long outBufferSize);
/// summary
/// SetWiring sets custom signal lines wiring (pinout).
/// /summary
/// param name="comName"A null-terminated string that defines one of the two port names in a pair /param
/// param name="bufferPtr"A pointer to VSERIAL_WIRING structure /param
/// param name="bufferSize"Size of Buffer parameter in bytes /param
/// returnsSetWiring returns TRUE if signal lines wiring was created successfully and FALSE otherwise/returns
[DllImport("vspdctl.dll")]
public static extern bool SetWiring(string comName, IntPtr bufferPtr, long bufferSize);
/// summary
/// SetAccessList restricts access to created virtual serial ports for various applications.
/// /summary
/// param name="comName" A null-terminated string that defines one of the two port names in a pair /param
/// param name="bufferPtr"A pointer to PROGRAM_ACCESS array /param
/// param name="bufferSize"Size of Buffer parameter in bytes /param
/// returnsSetAccessList returns TRUE if port access list was created successfully and FALSE otherwise/returns
[DllImport("vspdctl.dll")]
public static extern bool SetAccessList(string comName, IntPtr bufferPtr, long bufferSize);
//[StructLayout(LayoutKind.Sequential,CharSet=CharSet.Ansi,Pack=1)]
public struct _VSBUS_QUERY
{
/// summary
/// VSBUS_QUERY structure size
/// /summary
ulong Size;
/// summary
/// Has QUERYTYPE_PORTS = 1 value. Can be extended in the future.
/// /summary
ulong QueryType;
};
private const int MAX_PORTNAME_LEN = 6;
public struct _VSBUS_QUERY_EX
{
/// summary
/// VSBUS_QUERY_EX structure size
/// /summary
ulong Size;
/// summary
/// 1:query all virtual ports.
/// 2:query particular virtual pair
/// 3:query particular virtual pair; name of the application, which created the port, is returned.
/// /summary
ulong QueryType;
/// summary
/// Unicode name of any port in the pair you want to delete.
/// For instance, if "COM6-COM7" virtual serial ports pair was created,
/// then to remove it, PortName's value should be COM6 or COM7.
/// /summary
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = MAX_PORTNAME_LEN)]
string PortName;
}
}
}
