using?System;
using?System.Collections.Generic;
using?System.Text;
using?System.Runtime.InteropServices;


//namespace?LPTControl
//{
????public?class?LPTControl
????{
????????[StructLayout（LayoutKind.Sequential）]
????????private?struct?OVERLAPPED
????????{
????????????int?Internal;
????????????int?InternalHigh;
????????????int?Offset;
????????????int?OffSetHigh;
????????????int?hEvent;
????????}
????????[DllImport（“kernel32.dll?“）]
????????private?static?extern?int?CreateFile（
??????????string?lpFileName
??????????uint?dwDesiredAccess
??????????int?dwShareMode
??????????int?lpSecurityAttributes
??????????int?dwCreationDisposition
??????????int?dwFlagsAndAttributes
??????????int?hTemplateFile
??????????）;
????????[DllImport（“kernel32.dll?“）]
????????private?static?extern?bool?WriteFile（
??????????int?hFile
??????????byte[]?lpBuffer
??????????int?nNumberOfBytesToWrite
??????????ref???int?lpNumberOfBytesWritten
??????????ref???OVERLAPPED?lpOverlapped
??????????）;
????????[DllImport（“kernel32.dll?“）]
????????private?static?extern?bool?CloseHandle（
??????????int?hobject
??????????）;
????????private?int?iHandle;
????????public?bool?Open（）
????????{
????????????iHandle?=?CreateFile（“lpt1?“?0x40000000?0?0?3?0?0）;
????????????if?（iHandle?!=?-1）
????????????{
????????????????return?true;
????????????}
????????????else
????????????{
????????????????return?false;
????????????}
????????}
????????public?bool?Write（String?Mystring）
????????{
????????????if?（iHandle?!=?-1）
????????????{
????????????????OVERLAPPED?x?=?new?OVERLAPPED（）;
????????????????int?i?=?0;

????????????????byte[]?mybyte?=?System.Text.Encoding.Default.GetBytes（Mystring）;
????????????????bool?b?=?WriteFile（iHandle?mybyte?mybyte.Length?ref???i?ref???x）;
????????????????return?b;
????????????}
????????????else
????????????{
????????????????throw?new?Exception（“不能連接到打印機!?“）;
????????????}
????????}
????????public?bool?Write（byte[]?mybyte）
????????{
????????????if?（iHandle?!=?-1）
????????????{
????????????????OVERLAPPED?x?=?new?OVERLAPPED（）;
????????????????int?i?=?0;
????????????????WriteFile（iHandle?mybyte?mybyte.Length
??????????????????ref???i?ref???x）;
????????????????return?true;
????????????}
????????????else
????????????{
????????????????throw?new?Exception（“不能連接到打印機!?“）;
????????????}
????????}
????????public?bool?Close（）
????????{
????????????return?CloseHandle（iHandle）;
????????}
????}
//}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????16384??2009-10-22?13:03??LPTControl\bin\Debug\LPTControl.dll

?????文件??????11776??2009-10-22?13:03??LPTControl\bin\Debug\LPTControl.pdb

?????文件???????2544??2009-10-22?13:03??LPTControl\Class1.cs

?????文件???????1957??2009-10-22?12:33??LPTControl\LPTControl.csproj

?????文件????????908??2009-10-22?12:33??LPTControl\LPTControl.sln

????..A..H.??????9728??2009-10-22?18:12??LPTControl\LPTControl.suo

?????文件??????16384??2009-10-22?13:03??LPTControl\obj\Debug\LPTControl.dll

?????文件??????11776??2009-10-22?13:03??LPTControl\obj\Debug\LPTControl.pdb

?????文件????????146??2009-10-22?13:03??LPTControl\obj\LPTControl.csproj.FileList.txt

?????文件???????1339??2009-10-22?12:33??LPTControl\Properties\AssemblyInfo.cs

?????目錄??????????0??2009-10-22?12:33??LPTControl\obj\Debug\TempPE

?????目錄??????????0??2009-10-22?13:03??LPTControl\bin\Debug

?????目錄??????????0??2009-10-22?13:03??LPTControl\obj\Debug

?????目錄??????????0??2009-10-22?12:33??LPTControl\bin

?????目錄??????????0??2009-10-22?13:03??LPTControl\obj

?????目錄??????????0??2009-10-22?12:33??LPTControl\Properties

?????目錄??????????0??2009-10-22?13:03??LPTControl

-----------?---------??----------?-----??----

????????????????72942????????????????????17