请问两种并口打印方式
1.直接输出到并口
2.通过window打印
哪位能给点源代码

------解决方案--------------------
1.
---------------------------------------
public class LPTPrint
{
[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( "不能连接到打印机! ");
}
}
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( "不能连接到打印机! ");
}
}
public bool Close()
{
return CloseHandle(iHandle);
}
}
------解决方案--------------------
热敏打印机的打印方法与普通的不一样，产生一个文本文件，送到打印口即可