using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;

namespace Lskj.Control.Commom
{
    public static class WindowNavigate
    {
        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern IntPtr GetWindowDC(IntPtr hwnd);

        [DllImport("User32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern int ReleaseDC(IntPtr hwnd, IntPtr hdc);

        [DllImport("User32.dll", EntryPoint = "SendMessage")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);

        /// <summary>
        /// 禁止获取焦点
        /// </summary>
        /// <param name="hWnd"></param>
        /// <returns></returns>
        [DllImport("user32", EntryPoint = "HideCaret")]
        public static extern bool HideCaret(IntPtr hWnd);

        public static int HIWORD(int n)
        {
            return (n >> 16) & 0xffff;
        }

        public static int HIWORD(IntPtr n)
        {
            return HIWORD(unchecked((int)(long)n));
        }

        public static int LOWORD(int n)
        {
            return n & 0xffff;
        }

        public static int LOWORD(IntPtr n)
        {
            return LOWORD(unchecked((int)(long)n));
        }
    }
}