Displaying information about a user-pressed key
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Public Class MainClass
Shared Sub Main()
Dim myform As Form = New FrmKeyDemo()
Application.Run(myform)
End Sub ' Main
End Class
Public Class FrmKeyDemo
Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
Friend WithEvents lblInformation As System.Windows.Forms.Label
Friend WithEvents lblCharacter As System.Windows.Forms.Label
'Required by the Windows Form Designer
Private components As System.ComponentModel.Container
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.lblInformation = New System.Windows.Forms.Label()
Me.lblCharacter = New System.Windows.Forms.Label()
Me.SuspendLayout()
'
'lblInformation
'
Me.lblInformation.Font = New System.Drawing.Font("Microsoft Sans Serif", 12!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
Me.lblInformation.Location = New System.Drawing.Point(8, 56)
Me.lblInformation.Name = "lblInformation"
Me.lblInformation.Size = New System.Drawing.Size(176, 136)
Me.lblInformation.TabIndex = 1
'
'lblCharacter
'
Me.lblCharacter.Font = New System.Drawing.Font("Microsoft Sans Serif", 12!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
Me.lblCharacter.Location = New System.Drawing.Point(8, 16)
Me.lblCharacter.Name = "lblCharacter"
Me.lblCharacter.Size = New System.Drawing.Size(168, 23)
Me.lblCharacter.TabIndex = 0
'
'FrmKeyDemo
'
Me.AutoScaleBaseSize = New System.Drawing.Size(9, 22)
Me.ClientSize = New System.Drawing.Size(192, 205)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.lblInformation, Me.lblCharacter})
Me.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
Me.Name = "FrmKeyDemo"
Me.Text = "KeyDemo"
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub FrmKeyDemo_KeyPress(ByVal sender As System.Object, _
ByVal e As System.Windows.Forms.KeyPressEventArgs) _
Handles MyBase.KeyPress
lblCharacter.Text = "Key pressed: " & e.KeyChar
End Sub
Private Sub FrmKeyDemo_KeyDown(ByVal sender As System.Object, _
ByVal e As System.Windows.Forms.KeyEventArgs) _
Handles MyBase.KeyDown
lblInformation.Text = ""
' if key is Alt
If e.Alt Then
lblInformation.Text &= "Alt: Yes" & vbCrLf
Else
lblInformation.Text &= "Alt: No" & vbCrLf
End If
' if key is Shift
If e.Shift Then
lblInformation.Text &= "Shift: Yes" & vbCrLf
Else
lblInformation.Text &= "Shift: No" & vbCrLf
End If
' if key is Ctrl
If e.Control Then
lblInformation.Text &= "Ctrl: Yes" & vbCrLf
Else
lblInformation.Text &= "Ctrl: No" & vbCrLf
End If
lblInformation.Text &= "KeyCode: " & e.KeyCode.ToString & _
vbCrLf & "KeyData: " & e.KeyData.ToString & _
vbCrLf & "KeyValue: " & e.KeyValue
End Sub ' FrmKeyDemo_KeyDown
End Class
Related examples in the same category
