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