Handler MouseLeftButtonDown and MouseLeftButtonUp events

    


<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="DetectMouseButtonState" Height="400" Width="400">

  <StackPanel Height="100" Width="100" 
      MouseLeftButtonDown="HandleButtonDown" 
      MouseLeftButtonUp="HandleButtonDown" 
      Background="Red"
      DockPanel.Dock="Left">
    <TextBlock>Click on Me</TextBlock>
  </StackPanel>
</Window>
//File:Window.xaml.vb

Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Input

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub HandleButtonDown(sender As Object, e As MouseButtonEventArgs)
      Dim sourceStackPanel As StackPanel = TryCast(e.Source, StackPanel)

      If e.ButtonState = MouseButtonState.Pressed Then
        sourceStackPanel.Width = 200
        sourceStackPanel.Height = 200
      ElseIf e.ButtonState = MouseButtonState.Released Then
        sourceStackPanel.Width = 100
        sourceStackPanel.Height = 100
      End If
    End Sub
  End Class
End Namespace

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Handler MouseLeftButtonDown and MouseLeftButtonUp events : Mouse « Windows Presentation Foundation « VB.Net

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