initialise projects

WindowsFormsPopupKeyboard/WindowsFormsApplication3/Form1.cs

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+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 Form1 : Form
+    {
+        Keyboard keyboard;
+        public Form1()
+        {
+            InitializeComponent();
+        }
+
+        /******************************************
+         *  I had to hook up the textBox_GotFocus event handler method manuall in the Form's 
+         *  Designer.cs file using:
+         * 
+         *  this.textBox1.GotFocus += new System.EventHandler(this.textBox_GotFocus);
+         * 
+         *****************************************/
+        private void textBox_GotFocus(Object sender, EventArgs e)
+        {
+            TextBox tb = (TextBox)sender;  // take a copy of the object reference for the particular textbox pressed
+
+            label1.Text = "TextBox " + tb.Name  + " GotFocus " + DateTime.Now.ToString();  // just some debugging to see which textbox has focus
+
+            if (keyboard == null)  // check if the keyboard is already created
+            {
+                keyboard = new Keyboard();   // no keyboard so create an instance of one
+                keyboard.FormClosed += delegate 
+                  {
+                      keyboard = null;  // when the keyboard is closed, dispose of the keyboard instance
+                      this.ActiveControl = label1; // when the keyboard is closed, reset focus to the dummy label else
+                                                   // it will give focus to a textbox which would trigger the event to
+                                                   // make another keyboard appear.
+                  };
+            }
+            keyboard.setTextBoxForOutput(tb);  // tell the keyboard which textbox to send its characters too
+            keyboard.Show(); // show the keyboard
+
+            keyboard.Left = this.Left + tb.Left + tb.Width + 30;  // re-position the keyboard form to be next to
+            keyboard.Top = this.Top + tb.Top + tb.Height + 11;    // the textbox that recieves its input.
+        }
+
+        private void Form1_Load(object sender, EventArgs e)
+        {
+            this.ActiveControl = label1;    // when the form loads, direct focus to a label so that a textbox 
+                                            // doesn't get focus by default and trigger the GotFocus event (which
+                                            // would show the keyboard before we needed it)
+        }
+    }
+}