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How to: Set Smartphone Input Modes

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You can set the input mode for a TextBox in a Smartphone application to ABC, T9, and numeric input modes as defined by the InputMode enumeration. The InputModeEditor class provides access to Smartphone input methods for entering text.

The AlphaCurrent mode is the preferred input mode value for text boxes used for alpha characters. This mode matches the mode selected by holding down the star (*) key on the Smartphone.

You cannot use InputModeEditor to explicitly change casing settings for alpha input modes. However, the alpha input mode used (T9 or ABC) are retained by the AlphaCurrent input mode when set with the star key.

You can only use InputModeEditor on a Smartphone, and only with a TextBox control.

The following code example shows setting the input mode on three text boxes: Name, Phone, and City. The Name and City text boxes are set with the AlphaCurrent input mode and the Phone text box is set with the Numeric input mode.

To observe how AlphaCurrent works, perform the following procedure:

  1. With the Name text box selected, hold down the star key and enter text using either the T9 or ABC input modes.

  2. Enter text in the City text box. Note that the input mode is the same as the Name text box.


Imports System
Imports System.Windows.Forms
Imports Microsoft.WindowsCE.Forms



Public Class Form1
   Inherits System.Windows.Forms.Form
   Private mainMenu1 As System.Windows.Forms.MainMenu
   Private mi1 As System.Windows.Forms.MenuItem

   ' Text box for name.
   Private textBox1 As System.Windows.Forms.TextBox
   ' Text box for phone number.
   Private textBox2 As System.Windows.Forms.TextBox
   ' Text box for city.
   Private textBox3 As System.Windows.Forms.TextBox

   ' Labels for name, phone, and city
   Private label1 As System.Windows.Forms.Label
   Private label2 As System.Windows.Forms.Label
   Private label3 As System.Windows.Forms.Label


   Public Sub New()

      InitializeComponent()

      ' Add a menu to close the application.
      mi1 = New MenuItem()
      mainMenu1.MenuItems.Add(mi1)
      AddHandler mi1.Click, AddressOf mi1_Click
      mi1.Text = "Done"

      ' Set input mode for name text box to AlphaCurrent.
      InputModeEditor.SetInputMode(textBox1, InputMode.AlphaCurrent)

      ' Set input mode for phone number text box to Numeric.
      InputModeEditor.SetInputMode(textBox2, InputMode.Numeric)
      ' Set input mode for city text box to AlphaCurrent.
      InputModeEditor.SetInputMode(textBox3, InputMode.AlphaCurrent)
   End Sub



   Protected Overrides Sub Dispose(disposing As Boolean)
      MyBase.Dispose(disposing)
   End Sub


   Private Sub InitializeComponent()
      Me.mainMenu1 = New System.Windows.Forms.MainMenu()

      Me.mainMenu1 = New System.Windows.Forms.MainMenu()
      Me.textBox1 = New System.Windows.Forms.TextBox()
      Me.textBox2 = New System.Windows.Forms.TextBox()
      Me.textBox3 = New System.Windows.Forms.TextBox()

      Me.label1 = New System.Windows.Forms.Label()
      Me.label2 = New System.Windows.Forms.Label()
      Me.label3 = New System.Windows.Forms.Label()
      '
      ' textBox1
      '
      Me.textBox1.Location = New System.Drawing.Point(64, 8)
      Me.textBox1.Size = New System.Drawing.Size(104, 25)
      Me.textBox1.Text = ""
      '
      ' textBox2
      '
      Me.textBox2.Location = New System.Drawing.Point(64, 40)
      Me.textBox2.Size = New System.Drawing.Size(104, 25)
      Me.textBox2.Text = ""
      '
      ' textBox3
      '
      Me.textBox3.Location = New System.Drawing.Point(64, 72)
      Me.textBox3.Size = New System.Drawing.Size(104, 25)
      Me.textBox3.Text = ""
      '
      ' label1
      '
      Me.label1.Location = New System.Drawing.Point(8, 8)
      Me.label1.Size = New System.Drawing.Size(56, 22)
      Me.label1.Text = "Name"
      '
      ' label2
      '
      Me.label2.Location = New System.Drawing.Point(8, 40)
      Me.label2.Size = New System.Drawing.Size(56, 22)
      Me.label2.Text = "Phone"
      '
      ' label3
      '
      Me.label3.Location = New System.Drawing.Point(8, 72)
      Me.label3.Size = New System.Drawing.Size(56, 22)
      Me.label3.Text = "City"
      '
      ' Form1
      '
      Me.Controls.Add(textBox1)
      Me.Controls.Add(textBox2)
      Me.Controls.Add(textBox3)
      Me.Controls.Add(label1)
      Me.Controls.Add(label2)
      Me.Controls.Add(label3)
      Me.Menu = Me.mainMenu1
      Me.Text = "Input Mode Demo"
   End Sub


   Shared Sub Main()
      Application.Run(New Form1())
   End Sub


   Private Sub mi1_Click(sender As Object, e As EventArgs)
      Me.Close()
   End Sub
End Class


This example requires references to the following namespaces:

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