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 WindowsFormsPopupKeyboard
{
    public partial class Keyboard : Form
    {
        TextBox tt;        

        public Keyboard()
        {
            InitializeComponent();
            this.TopMost = true;  // make the keyboard always in front of the other forms
        }

        public void setTextBoxForOutput(TextBox t)
        {
            tt = t;  // 
        }


        private void button_Click(object sender, EventArgs e)
        {
                
             tt.Text += ((Button)sender).Text;
        }
    }
}