mes-client/UAS_MES_YD/CustomControl/TextBoxWithIcon/SNCodeEnterTextBox.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using UAS_MES_NEW.PublicMethod;

namespace UAS_MES_NEW.CustomControl.TextBoxWithIcon
{
    public partial class SNCodeEnterTextBox : TextBox
    {

        [DllImport("user32.dll", EntryPoint = "GetKeyboardState")]
        public static extern int GetKeyboardState(byte[] pbKeyState);


        public static bool CapsLockStatus
        {
            get
            {
                byte[] bs = new byte[256];
                GetKeyboardState(bs);
                return (bs[0x14] == 1);
            }
        }

        private string ID1;
        private string Power1;
        private string str;
        private string str1;
        private string str2;
        /// <summary>
        /// 设置锁定字段
        /// </summary>
        string AllPower1;

        public string AllPower
        {
            get { return AllPower1; }
            set { AllPower1 = value; }
        }

        public string ID
        {
            get { return ID1; }
            set { ID1 = value; }
        }

        public string Str
        {
            get { return str; }
            set { str = value; }
        }

        public string Str1
        {
            get { return str1; }
            set { str1 = value; }
        }

        public string Str2
        {
            get { return str2; }
            set { str2 = value; }
        }

        public string Power
        {
            get { return Power1; }
            set { Power1 = value; }
        }

        public SNCodeEnterTextBox()
        {
            InitializeComponent();
        }

        private void SNCodeEnterTextBox_Leave(object sender, EventArgs e)
        {
            this.BackColor = Color.White;
        }

        private void SNCodeEnterTextBox_Enter(object sender, EventArgs e)
        {
            this.BackColor = Color.GreenYellow;
        }

        private void SNCodeEnterTextBox_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Modifiers.CompareTo(Keys.Control) == 0 && e.KeyCode == Keys.A)
                this.SelectAll();
            //不允许开启大写扫描
            if (e.KeyCode == Keys.Enter)
            { 
                if (CapsLockStatus)
                {
                    Text = "";
                    BaseUtil.ShowError("请关闭大写锁定键[Caps Lock]");
                }
            }
        }
    }
}