Unity调用打印机

using System;
using System.Diagnostics;
using System.Drawing.Printing;
using System.IO;
using UnityEngine;

namespace LCPrinter
{
    public static class Prints
    {
        //打印图片（图片的字节流，打印张数，打印的名字）
        public static void PrintTexture(byte[] texture2DBytes, int numCopies, string printerName)
        {
            //字节流是否为空
            if (texture2DBytes == null)
            {
                //输出提示
                UnityEngine.Debug.LogWarning("LCPrinter: Texture is empty.");
                return;
            }
            //打印设置新建对象
            PrinterSettings printerSettings = new PrinterSettings();
            //打印名字为空或者等于空
            if (printerName == null || printerName.Equals(""))
            {
                
                printerName = printerSettings.PrinterName;
                UnityEngine.Debug.Log("LCPrinter: Printing to default printer (" + printerName + ").");
            }
            //储存时间段信息
            string str = string.Concat(new string[]
            {
                DateTime.Now.Year.ToString(),
                "-",
                DateTime.Now.Month.ToString(),
                "-",
                DateTime.Now.Day.ToString(),
                "-",
                DateTime.Now.Hour.ToString(),
                "-",
                DateTime.Now.Minute.ToString(),
                "-",
                DateTime.Now.Second.ToString(),
                "-",
                DateTime.Now.Millisecond.ToString()
            });
            //文本
            string text = (Application.persistentDataPath + "\\LCPrinterFiletmp_" + str + ".png").Replace("/", "\\");
            UnityEngine.Debug.Log("LCPrinter: Temporary Path - " + text);
            //字节流写入
            File.WriteAllBytes(text, texture2DBytes);
            Prints.PrintCMD(text, numCopies, printerName);
        }

        //通过纹理路径（路径，打印张数，输出的名字）
        public static void PrintTextureByPath(string path, int numCopies, string printerName)
        {
            //打印机设置
            PrinterSettings printerSettings = new PrinterSettings();
            //判断是否为空
            if (printerName == null || printerName.Equals(""))
            {
                //设置打印的名字
                printerName = printerSettings.PrinterName;
                UnityEngine.Debug.Log("LCPrinter: Printing to default printer (" + printerName + ").");
            }
            Prints.PrintCMD(path, numCopies, printerName);
        }

        //CMD
        private static void PrintCMD(string path, int numCopies, string printerName)
        {
            //对进程的控制
            Process process = new Process();
            try
            {
                for (int i = 0; i < numCopies; i++)
                {
                    process.StartInfo.FileName = "rundll32";
                    process.StartInfo.Arguments = string.Concat(new string[]
                    {
                        "C:\\WINDOWS\\system32\\shimgvw.dll,ImageView_PrintTo \"",
                        path,
                        "\" \"",
                        printerName,
                        "\""
                    });
                    process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                    process.StartInfo.UseShellExecute = true;
                    process.Start();
                }
            }
            catch (Exception arg)
            {
                UnityEngine.Debug.LogWarning("LCPrinter: " + arg);
            }
            finally
            {
                process.Close();
                UnityEngine.Debug.Log("LCPrinter: Texture printing.");
            }
        }
    }
}

使用时需要Using 命名空间，然后通过Prints.PrintTexture（）方法来打印。

举个栗子：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using LCPrinter;

public class demo : MonoBehaviour {

    public  Texture2D screenShot;

    void test()
    {
        Prints.PrintTexture(screenShot.EncodeToPNG(), 1, "");
    }
}

这里并没有给打印机名字是使用默认的打印机，需要自己设置。

需要注意的是texture2D的分辨率是否符合打印机默认的尺寸。