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 CSharp_GeographyGame
{
    public partial class presidentsnamesForm : Form
    {
        public const int WM_NCLBUTTONDOWN = 0xA1;
        public const int HT_CAPTION = 0x2;

        [System.Runtime.InteropServices.DllImport("user32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
        [System.Runtime.InteropServices.DllImport("user32.dll")]
        public static extern bool ReleaseCapture();

        public presidentsnamesForm()
        {
            InitializeComponent();
        }

        private void lbPresNames_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Control == true && e.KeyCode == Keys.C)
            {
                string s = lbPresNames.SelectedItem.ToString();
                Clipboard.SetData(DataFormats.StringFormat, s);
                e.SuppressKeyPress = true; // important function which prevents jump from copied name to the next name beginning with the same letter
            }
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void panel1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                ReleaseCapture();
                SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
            }
        }
    }
}