using System;
using System.Runtime.InteropServices;
using System.IO;
using System.Threading;
using System.Windows.Forms;

namespace Zhaizj.Framework.Utils
{
    /// <summary> 
    /// 钱箱控制
    /// </summary> 
    public class POSPrinter
    {       
        const int OPEN_EXISTING = 3;
        string prnPort = "COM1";
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        private static extern IntPtr CreateFile(string lpFileName,
        int dwDesiredAccess,
        int dwShareMode,
        int lpSecurityAttributes,
        int dwCreationDisposition,
        int dwFlagsAndAttributes,
        int hTemplateFile);
        
        public POSPrinter()
        {
            this.prnPort = "LPT1 ";
            //this.prnPort = "USB001";
        }
        public POSPrinter(string prnPort)
        {
            this.prnPort = prnPort;
        }
        public void PrintLine()
        {
            new Thread(new ThreadStart(OpenMoneyBox)).Start();
        }

        private void OpenMoneyBox() 
        {
            try
            {
                IntPtr iHandle = CreateFile(prnPort, 0x40000000, 0, 0, OPEN_EXISTING, 0, 0);
                if (iHandle.ToInt32() == -1)
                {
                }
                else
                {
                    FileStream fs = new FileStream(iHandle, FileAccess.ReadWrite);
                    StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.Default);
                    sw.Write(((char)27).ToString() + "p" + ((char)0).ToString() + ((char)60).ToString() + ((char)255).ToString());
                    sw.Close();
                    fs.Close();
                }
            }
            catch
            {

            }
        }
    }
}