using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace MeterModuleLibrary
{
    public partial class frmQjNo : Form
    {
        public frmQjNo()
        {
            InitializeComponent();
        }

        public string strValue = "";

        private void btnValue_Click(object sender, EventArgs e)
        {
            Button btn = (Button)sender;
            setTxtValue(btn, 0);
        }

        private void setTxtValue(Button btn, int m)
        {
            int i = txtValue.SelectionStart;
            txtValue.Focus();
            txtValue.Text = txtValue.Text.Trim() + btn.Text;
            txtValue.Select(++i + m, 0);
        }

        private void btnClean_Click(object sender, EventArgs e)
        {
            txtValue.Text = "";
        }

        private void btnLeft_Click(object sender, EventArgs e)
        {
            int i = txtValue.SelectionStart;
            txtValue.Focus();
            if (i > 0)
                txtValue.Select(--i, 0);
        }

        private void btnRight_Click(object sender, EventArgs e)
        {
            int i = txtValue.SelectionStart;
            txtValue.Focus();
            if (i < txtValue.Text.Trim().Length)
                txtValue.Select(++i, 0);
        }

        private void btnBack_Click(object sender, EventArgs e)
        {
            int i = txtValue.SelectionStart;
            txtValue.Focus();
            if (i > 0)
            {
                txtValue.Text = txtValue.Text.Trim().Substring(0, i - 1) + txtValue.Text.Trim().Substring(i);
                txtValue.Select(--i, 0);
            }
        }

        private void btnSubmit_Click(object sender, EventArgs e)
        {
            strValue = txtValue.Text.Trim();
            this.DialogResult = DialogResult.OK;
            this.Close();
        }
    }
}