Reading keyboard modifiers : Key Event « Windows Presentation Foundation « VB.Net

Reading keyboard modifiers

    

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="KeyboardInput" Height="300" Width="300">
    <Grid>
        
    </Grid>
</Window>



//File:Window.xaml.vb
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Shapes
Imports System.Windows.Threading
Imports System.Diagnostics


Namespace WpfApplication1
  Public Partial Class Window1
    Inherits System.Windows.Window
    Private dt As New DispatcherTimer()
    Public Sub New()
      InitializeComponent()
      dt.Interval = TimeSpan.FromSeconds(0.5)
      AddHandler dt.Tick, New EventHandler(AddressOf dt_Tick)
      dt.Start()
    End Sub

    Private Sub dt_Tick(sender As Object, e As EventArgs)

      If (Keyboard.Modifiers And ModifierKeys.Control) <> 0 Then
        Console.WriteLine("ModifierKeys.Control")
      End If
      Dim homeKeyPressed As Boolean = Keyboard.IsKeyDown(Key.Home)
      Debug.WriteLine("Home pressed: " & homeKeyPressed)
    End Sub

  End Class
End Namespace

1.	Creating a KeyBinding between the Open command and Ctrl-R
2.	Command Handler Key Binding
3.	Use Keyboard.Focus to set the focus to a Text Field
4.	Provide Quick Keyboard Access to Buttons
5.	Reading individual key state with Keyboard.IsKeyDown
6.	Use InputBinding to bind Application commends to Key events
7.	Suppress Keyboard and Mouse Events
8.	Query Left / Right control key
9.	Is Key.CapsLock Toggled
10.	Keyboard.IsKeyToggled
11.	Query Number lock key
12.	Use KeyBinding to bind Key event to TextBox.InputBindings
13.	Custom Command by KeyGesture and RoutedUICommand
14.	TextBox PreviewKeyDown, PreviewKeyUp, PreviewTextInput, KeyDown, KeyUp and TextChanged events
15.	StackPanel PreviewTextInput and PreviewKeyDown
16.	If input is not a number do not handle the key event
17.	RoutedEvents: Tunneled Key Press
18.	On Key Down Handler

Reading keyboard modifiers : Key Event « Windows Presentation Foundation « VB.Net

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