紧凑框架套接字文档打印
紧凑框架套接字文档打印
提问于 2018-04-27 10:50:58
我正试图从windows ce设备将文档打印到网络激光打印机上。由于我试图打印示例文本，没有问题，而且我可以这样做，我的问题是，我需要打印一些文本和文本下面的一个小图像，例如：
not formatted text
------------------
| IMAGE |
------------------
other not formatted text我的第一个想法是构建一个Rtf文档，并将其发送给打印机，但它显然是打印文档文本内容，而不是格式化的文本.我尝试了很多其他方法来编码要发送的数据，但是没有结果.有办法做到这点，还是我只是在浪费时间？如果不是，有一种方法可以存档发送PCL/PostScript数据吗？(通常驱动程序是新激光打印机上基本命令的“标准”)。这是我用来在网络打印机上打印的功能：
public static string print_data_to_IP(string printerIP, int printerPort, byte[] myEncoded_bytes)
{
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//Not supported
//socket.NoDelay = true;
IPAddress ip = IPAddress.Parse(printerIP);
IPEndPoint ipEndPoint = new IPEndPoint(ip, printerPort);
socket.Connect(ipEndPoint);
socket.Send(myEncoded_bytes);
socket.Close();
return null;
}myEncoded_bytes是通过以下方式制作的：
MemoryStream ms = new MemoryStream();
using (FileStream stream = File.Open("\\test.rtf", FileMode.Open))
{
byte[] stream_to_byte_array = new byte[stream.Length];
stream.Read(stream_to_byte_array, 0, (int)stream.Length);
ms = new MemoryStream(stream_to_byte_array);
stream.Close();
}
byte[] data = ms.ToArray();谢谢你的帮助，
军团
不允许使用外部库，因此我不能使用printCE或类似的“帮助”。
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-05-29 14:31:34
我试图更好地解释我如何达到目标，这是一个在@josef 链接之后创建的示例函数，我在选择的位置上写了一些文本，并在屏幕中心画了一个红色的框(注释解释了pcl命令是如何工作的)。按照PCL手册，您可以轻松地自定义您喜欢的文本和绘图(手册)。
private void btn_pcl_printing_Click(object sender, EventArgs e)
{
string printer_ip = "192.168.1.6";
char command_start_character = '\u001B';
char carriage_return = '\u000D';
char line_feed = '\u000A';
string lane_escape_character = string.Concat(carriage_return, line_feed); //"\r\n";
#if PJL
string printer_process_name = "prova.TXT";
string raw_end_of_file = command_start_character + "%–12345X" + " @PJL EOF" + lane_escape_character;
raw_end_of_file += command_start_character + "%–12345X";
string raw_to_print = command_start_character + "%–12345X";
raw_to_print += " @PJL JOB NAME = \"" + printer_process_name + "\"" + lane_escape_character;
raw_to_print += " @PJL ENTER LANGUAGE = PCL" + lane_escape_character;
#else
//Reset the printer and start a new PAGE
string raw_to_print = command_start_character + "E";
#endif
//Set Printer resolution to 150 DPI
string raw_pcl_commands = command_start_character + "&u150D" + command_start_character + "*t150R";
//Write "Hello Wold!!" at the position 150x and 150y (the command is case sensitive).
raw_pcl_commands += command_start_character + "*p150x150Y" + "Hello World!!!";
//Another way to to what i've just done before
//raw_pcl_commands += command_start_character + "*p150X" + command_start_character + "*p150Y" + "Hello World!!!";
raw_pcl_commands += command_start_character + "*p150X" + command_start_character + "*p150Y" + "Hello World!!!";
//I choose to use RGB colors (v6), select an rgb color (a0,b0,c0) and save it an a palette (i0) that i select (i0S). My selected color is RED (255,0,0)
raw_pcl_commands += command_start_character + "*v6w255a0b0c0i0S";
//Another way to to what i've just done before
//raw_pcl_commands += command_start_character + "*v6W";
//raw_pcl_commands += command_start_character + "*v255a0b0C" + command_start_character + "*v0i0S";
//Draw a rectangle 300*150
raw_pcl_commands += command_start_character + "*c300a150b5P";
//COMANDI PCL
raw_pcl_commands += command_start_character + "E";
raw_to_print += raw_pcl_commands;
#if PJL
raw_to_print += raw_end_of_file;
#endif
byte[] myEncoded_bytes = Encoding.UTF8.GetBytes(raw_to_print);
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//Not supported on CE
//socket.NoDelay = true;
int printerPort = 9100;
IPAddress ip = IPAddress.Parse(printer_ip);
IPEndPoint ipEndPoint = new IPEndPoint(ip, printerPort);
socket.Connect(ipEndPoint);
socket.Send(myEncoded_bytes);
socket.Close();
}现在，对于这些图像，您可以使用以下两种方法：
1)用PCL命令“手动”绘制图像，见手册第41页。以查看一些示例(如果像我的示例中的简单条形码是最好的遵循方式)。
2)用PCL宏绘制图像.这就是我所能说的，因为读那个文件让我头疼，强迫我选择方法1 :D
希望这是帮助，军团
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原文链接：
https://stackoverflow.com/questions/50060831
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