Reorged source tree.

samples/Sample.WPF/App.xaml

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+<Application x:Class="Sample.WPF.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             StartupUri="Launcher.xaml">
+	<Application.Resources>
+        <ResourceDictionary>
+            <!-- Launcher Style, anything you won't use goes -->
+            <Style TargetType="{x:Type Rectangle}" />
+
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="/ModernWPF;component/Themes/ModernBaseDesktop.xaml" />
+                <ResourceDictionary Source="/ModernWPF;component/Themes/ModernLight.xaml" />
+                <ResourceDictionary Source="/ModernWPF;component/Themes/ModernStyles.xaml" />
+                
+                <ResourceDictionary>
+                    <Style x:Key="AppWindow" TargetType="Window" BasedOn="{StaticResource ModernWindowV2}"/>
+                    <Style x:Key="AppListBoxItem" TargetType="ListBoxItem" BasedOn="{StaticResource ModernListBoxItem}">
+                        <Setter Property="BorderThickness" Value="1"/>
+                        <Style.Triggers>
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter Property="Background" Value="{DynamicResource ModernBackground2}"/>
+                            </Trigger>
+                            <Trigger Property="IsSelected" Value="True">
+                                <Setter Property="Background" Value="{DynamicResource ModernBackground2}"/>
+                                <Setter Property="Foreground" Value="{DynamicResource ModernForeground}"/>
+                                <Setter Property="BorderBrush" Value="{DynamicResource ModernAccent}"/>
+                            </Trigger>
+                        </Style.Triggers>
+                    </Style>
+                    <Style x:Key="AppListBox" TargetType="ListBox" BasedOn="{StaticResource ModernListBox}">
+                        <Setter Property="ItemContainerStyle" Value="{StaticResource AppListBoxItem}"/>
+                        <Setter Property="BorderThickness" Value="0 1 1 0"/>
+                        <Setter Property="ScrollViewer.CanContentScroll" Value="False"/>
+                    </Style>
+                </ResourceDictionary>
+            </ResourceDictionary.MergedDictionaries>
+		</ResourceDictionary>
+	</Application.Resources>
+</Application>

samples/Sample.WPF/App.xaml.cs

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+using ModernWPF;
+using System.Windows;
+
+namespace Sample.WPF
+{
+	/// <summary>
+	/// Interaction logic for App.xaml
+	/// </summary>
+	public partial class App : Application
+	{
+		protected override void OnStartup(StartupEventArgs e)
+		{
+            ModernTheme.ApplyTheme(ModernTheme.Theme.Light, Accent.Green);
+			base.OnStartup(e);
+		}
+	}
+}

samples/Sample.WPF/Launcher.xaml

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+<Window x:Class="Sample.WPF.Launcher"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="Scan Launcher" Height="200" Width="250"
+        ResizeMode="NoResize" Style="{StaticResource AppWindow}">
+    <Grid>
+        <StackPanel VerticalAlignment="Center">
+            <Button Content="Open scan window" Click="Button_Click" Margin="4 0"></Button>
+            <TextBlock Text="This is to test opening/closing multiple twain sessions in an app" Margin="8"
+                       TextWrapping="Wrap"></TextBlock>
+        </StackPanel>
+    </Grid>
+</Window>

samples/Sample.WPF/Launcher.xaml.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+namespace Sample.WPF
+{
+    /// <summary>
+    /// Interaction logic for Launcher.xaml
+    /// </summary>
+    public partial class Launcher : Window
+    {
+        public Launcher()
+        {
+            InitializeComponent();
+        }
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            new MainWindow().ShowDialog();
+        }
+    }
+}

samples/Sample.WPF/MainWindow.xaml

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+<Window x:Class="Sample.WPF.MainWindow"
+		xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+		xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
+        xmlns:modern="http://modernwpf"
+        xmlns:proj="clr-namespace:Sample.WPF"
+		Title="{Binding AppTitle}" 
+        Height="600" Width="900" ResizeMode="CanResizeWithGrip"
+        x:Name="theWindow"
+        Style="{StaticResource AppWindow}">
+    <Window.Resources>
+        <proj:TwainVM x:Key="vm"></proj:TwainVM>
+    </Window.Resources>
+    <Window.DataContext>
+        <StaticResource ResourceKey="vm"></StaticResource>
+    </Window.DataContext>
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="auto" />
+            <RowDefinition Height="auto" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="auto" />
+            <ColumnDefinition Width="auto" />
+            <ColumnDefinition Width="auto" />
+            <ColumnDefinition Width="*" />
+        </Grid.ColumnDefinitions>
+
+        <Label Content="Sources"></Label>
+        <ListBox x:Name="SrcList" Grid.Row="1" Grid.RowSpan="2" Width="150"
+                 ItemsSource="{Binding DataSources}"
+                 SelectedItem="{Binding SelectedSource}"
+                 Style="{StaticResource AppListBox}">
+            <ListBox.ItemTemplate>
+                <DataTemplate>
+                    <StackPanel>
+                        <TextBlock Text="{Binding Name}" TextWrapping="Wrap"></TextBlock>
+                        <TextBlock Text="{Binding Version, StringFormat='Version {0}'}" TextWrapping="Wrap" Foreground="{DynamicResource ModernForeground2}"
+                                   Margin="8 0 0 0"/>
+                        <TextBlock Text="{Binding Protocol, StringFormat='TWAIN {0}'}" Foreground="{DynamicResource ModernForeground2}"
+                                   Margin="8 0 0 0"/>
+                    </StackPanel>
+                </DataTemplate>
+            </ListBox.ItemTemplate>
+        </ListBox>
+
+        <Label Content="Caps" Grid.Column="1"></Label>
+        <TextBox Text="{Binding CapFilter, UpdateSourceTrigger=PropertyChanged}" DataContext="{Binding SelectedSource}"
+                 Grid.Column="1" Grid.Row="1"
+                 modern:TextBoxUI.WatermarkText="Find cap name"></TextBox>
+        <ListBox x:Name="CapList" Grid.Row="2" Grid.Column="1" Width="150"
+                 DataContext="{Binding SelectedSource}"
+                 ItemsSource="{Binding Caps}"
+                 SelectionChanged="CapList_SelectionChanged"
+                 Style="{StaticResource AppListBox}">
+            <ListBox.ItemTemplate>
+                <DataTemplate>
+                    <StackPanel>
+                        <TextBlock Text="{Binding Name}" ></TextBlock>
+                        <TextBlock Text="{Binding Supports}" TextWrapping="Wrap" Foreground="{DynamicResource ModernForeground2}"
+                                   FontStyle="Italic"/>
+                    </StackPanel>
+                </DataTemplate>
+            </ListBox.ItemTemplate>
+        </ListBox>
+
+        <Label Content="Cap values" Grid.Column="2"></Label>
+        <ListBox x:Name="CapDetailList" Grid.Row="1" Grid.RowSpan="2" Grid.Column="2" MinWidth="100"
+                 SelectionChanged="CapDetailList_SelectionChanged"
+                 ScrollViewer.CanContentScroll="True" 
+                 Style="{StaticResource AppListBox}">
+            <ListBox.ItemTemplate>
+                <DataTemplate>
+                    <TextBlock Text="{Binding}"></TextBlock>
+                </DataTemplate>
+            </ListBox.ItemTemplate>
+        </ListBox>
+
+        <StackPanel Orientation="Horizontal" Grid.Column="3" >
+            <Label Content="State:"></Label>
+            <TextBlock Text="{Binding State}"></TextBlock>
+            <Button Content="_Driver settings" Command="{Binding ShowDriverCommand}"></Button>
+            <Button Content="_Start capture" Command="{Binding CaptureCommand}"></Button>
+            <Slider Maximum="{Binding MaxThumbnailSize}" Minimum="{Binding MinThumbnailSize}" 
+                    Value="{Binding ThumbnailSize}" Width="100" LargeChange="20" SmallChange="10"
+                    VerticalAlignment="Center"
+                    ToolTip="{Binding ThumbnailSize}"></Slider>
+            <TextBlock Text="{Binding CapturedImages.Count, StringFormat='{}{0} pages'}"></TextBlock>
+            <Button Content="_Clear pages" Command="{Binding ClearCommand}"></Button>
+        </StackPanel>
+
+        <ListBox Grid.Row="1" Grid.RowSpan="2" Grid.Column="3"
+                 ItemsSource="{Binding CapturedImages}">
+            <ListBox.ItemsPanel>
+                <ItemsPanelTemplate>
+                    <WrapPanel ScrollViewer.HorizontalScrollBarVisibility="Disabled"></WrapPanel>
+                </ItemsPanelTemplate>
+            </ListBox.ItemsPanel>
+            <ListBox.ItemTemplate>
+                <DataTemplate>
+                    <Border Padding="4">
+                        <Image Stretch="Uniform" 
+                               RenderOptions.BitmapScalingMode="HighQuality"
+                               Width="{Binding ElementName=theWindow, Path=DataContext.ThumbnailSize}"
+                               Height="{Binding ElementName=theWindow, Path=DataContext.ThumbnailSize}"
+                               Source="{Binding}"></Image>
+                    </Border>
+                </DataTemplate>
+            </ListBox.ItemTemplate>
+        </ListBox>
+    </Grid>
+</Window>

samples/Sample.WPF/MainWindow.xaml.cs

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+using GalaSoft.MvvmLight.Messaging;
+using ModernWPF.Controls;
+using ModernWPF.Messages;
+using NTwain;
+using NTwain.Data;
+using System;
+using System.Collections;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Linq;
+using System.Reflection;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Interop;
+using System.Windows.Media.Imaging;
+
+namespace Sample.WPF
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        TwainVM _twainVM;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+            if (!DesignerProperties.GetIsInDesignMode(this))
+            {
+                _twainVM = this.DataContext as TwainVM;
+
+                Messenger.Default.Register<RefreshCommandsMessage>(this, m => m.HandleRefreshCommands());
+                Messenger.Default.Register<DialogMessage>(this, msg =>
+                {
+                    if (Dispatcher.CheckAccess())
+                    {
+                        this.HandleDialogMessageModern(msg);
+                    }
+                    else
+                    {
+                        Dispatcher.BeginInvoke(new Action(() =>
+                        {
+                            this.HandleDialogMessageModern(msg);
+                        }));
+                    }
+                });
+            }
+        }
+        protected override void OnClosing(CancelEventArgs e)
+        {
+            e.Cancel = _twainVM.State > 4;
+            base.OnClosing(e);
+        }
+        protected override void OnClosed(EventArgs e)
+        {
+            _twainVM.CloseDown();
+            base.OnClosed(e);
+        }
+
+        protected override void OnSourceInitialized(EventArgs e)
+        {
+            base.OnSourceInitialized(e);
+            _twainVM.WindowHandle = new WindowInteropHelper(this).Handle;
+
+        }
+
+        private void CapList_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            var capVM = CapList.SelectedItem as CapVM;
+            if (capVM != null)
+            {
+                CapDetailList.ItemsSource = capVM.Get();
+                CapDetailList.SelectedItem = capVM.GetCurrent();
+            }
+            else
+            {
+                CapDetailList.ItemsSource = null;
+            }
+        }
+
+        private void CapDetailList_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            var capVM = CapList.SelectedItem as CapVM;
+            if (capVM != null)
+            {
+                if (capVM.Supports.HasFlag(QuerySupports.Set))
+                {
+                    try
+                    {
+                        capVM.Set(CapDetailList.SelectedItem);
+                    }
+                    catch (Exception ex)
+                    {
+                        if (ex is TargetInvocationException)
+                        {
+                            ex = ex.InnerException;
+                        }
+                        ModernMessageBox.Show(this, ex.Message, "Cannot Set", MessageBoxButton.OK, MessageBoxImage.Error);
+                    }
+                }
+            }
+        }
+    }
+}

samples/Sample.WPF/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Windows;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("Sample.WPF")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("Yin-Chun Wang")]
+[assembly: AssemblyProduct("Sample.WPF")]
+[assembly: AssemblyCopyright("Copyright © Yin-Chun Wang 2014")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+//In order to begin building localizable applications, set 
+//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
+//inside a <PropertyGroup>.  For example, if you are using US english
+//in your source files, set the <UICulture> to en-US.  Then uncomment
+//the NeutralResourceLanguage attribute below.  Update the "en-US" in
+//the line below to match the UICulture setting in the project file.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[assembly: ThemeInfo(
+	ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+	//(used if a resource is not found in the page, 
+	// or application resource dictionaries)
+	ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+	//(used if a resource is not found in the page, 
+	// app, or any theme specific resource dictionaries)
+)]
+
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

samples/Sample.WPF/Properties/Resources.Designer.cs

@@ -0,0 +1,63 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.0
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace Sample.WPF.Properties {
+    using System;
+    
+    
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources() {
+        }
+        
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.ReferenceEquals(resourceMan, null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Sample.WPF.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+    }
+}

samples/Sample.WPF/Properties/Resources.resx

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

samples/Sample.WPF/Properties/Settings.Designer.cs

@@ -0,0 +1,26 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.0
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace Sample.WPF.Properties {
+    
+    
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "12.0.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
+        
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+        
+        public static Settings Default {
+            get {
+                return defaultInstance;
+            }
+        }
+    }
+}

samples/Sample.WPF/Properties/Settings.settings

@@ -0,0 +1,7 @@
+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
+  <Profiles>
+    <Profile Name="(Default)" />
+  </Profiles>
+  <Settings />
+</SettingsFile>

samples/Sample.WPF/Sample.WPF.csproj

@@ -0,0 +1,168 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{1715C2B7-5C35-4F8B-9D9B-8D68A3D5284D}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Sample.WPF</RootNamespace>
+    <AssemblyName>Sample.WPF</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+    <TargetFrameworkProfile>Client</TargetFrameworkProfile>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>x86</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>x64</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup>
+    <StartupObject>
+    </StartupObject>
+  </PropertyGroup>
+  <PropertyGroup>
+    <ApplicationIcon>scanner.ico</ApplicationIcon>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="CommonWin32, Version=2.0.0.0, Culture=neutral, PublicKeyToken=a0a4edcfe233918d, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\packages\CommonWin32.2.0.5.5\lib\net35-Client\CommonWin32.dll</HintPath>
+    </Reference>
+    <Reference Include="GalaSoft.MvvmLight, Version=5.0.2.32240, Culture=neutral, PublicKeyToken=0e453835af4ee6ce, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\packages\MvvmLightLibs.5.0.2.0\lib\net40\GalaSoft.MvvmLight.dll</HintPath>
+    </Reference>
+    <Reference Include="GalaSoft.MvvmLight.Extras, Version=5.0.2.32240, Culture=neutral, PublicKeyToken=f46ff315b1088208, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\packages\MvvmLightLibs.5.0.2.0\lib\net40\GalaSoft.MvvmLight.Extras.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.Practices.ServiceLocation, Version=1.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\packages\CommonServiceLocator.1.3\lib\portable-net4+sl5+netcore45+wpa81+wp8\Microsoft.Practices.ServiceLocation.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.WindowsAPICodePack">
+      <HintPath>..\..\packages\Microsoft.WindowsAPICodePack-Core.1.1.0.0\lib\Microsoft.WindowsAPICodePack.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.WindowsAPICodePack.Shell">
+      <HintPath>..\..\packages\Microsoft.WindowsAPICodePack-Shell.1.1.0.0\lib\Microsoft.WindowsAPICodePack.Shell.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.WindowsAPICodePack.ShellExtensions">
+      <HintPath>..\..\packages\Microsoft.WindowsAPICodePack-Shell.1.1.0.0\lib\Microsoft.WindowsAPICodePack.ShellExtensions.dll</HintPath>
+    </Reference>
+    <Reference Include="ModernWPF, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c99d0cfbea7491ef, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\packages\ModernWPF.1.2.9.4\lib\net40-Client\ModernWPF.dll</HintPath>
+    </Reference>
+    <Reference Include="ModernWPF.Mvvm">
+      <HintPath>..\..\packages\ModernWPF.Mvvm.0.7.0\lib\net40-Client\ModernWPF.Mvvm.dll</HintPath>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Windows.Interactivity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\MvvmLightLibs.5.0.2.0\lib\net40\System.Windows.Interactivity.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Compile Include="Launcher.xaml.cs">
+      <DependentUpon>Launcher.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="ViewModels\TwainVM.cs" />
+    <Page Include="Launcher.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
+    <Page Include="MainWindow.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="ViewModels\CapVM.cs" />
+    <Compile Include="ViewModels\DataSourceVM.cs" />
+    <Compile Include="MainWindow.xaml.cs">
+      <DependentUpon>MainWindow.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="app.config" />
+    <None Include="packages.config" />
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+    <AppDesigner Include="Properties\" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\NTwain\NTwain.csproj">
+      <Project>{0c5a6fb1-0282-4d61-8354-68deb1515001}</Project>
+      <Name>NTwain</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="scanner.ico" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

samples/Sample.WPF/ViewModels/CapVM.cs

@@ -0,0 +1,102 @@
+using NTwain;
+using NTwain.Data;
+using System.Collections;
+using System.Linq;
+using System.Reflection;
+
+namespace Sample.WPF
+{
+    /// <summary>
+    /// Wraps a capability as a view model.
+    /// </summary>
+    class CapVM
+    {
+        DataSource _ds;
+        object _wrapper;
+        MethodInfo _getMethod;
+        MethodInfo _getCurrentMethod;
+        MethodInfo _setMethod;
+
+        public CapVM(DataSource ds, CapabilityId cap)
+        {
+            _ds = ds;
+            Cap = cap;
+
+
+            var capName = cap.ToString();
+            var wrapProperty = ds.Capabilities.GetType().GetProperty(capName);
+            if (wrapProperty != null)
+            {
+                _wrapper = wrapProperty.GetGetMethod().Invoke(ds.Capabilities, null);
+                var wrapperType = _wrapper.GetType();
+                _getMethod = wrapperType.GetMethod("GetValues");
+                _getCurrentMethod = wrapperType.GetMethod("GetCurrent");
+                _setMethod = wrapperType.GetMethods().FirstOrDefault(m => m.Name == "SetValue");
+            }
+
+            var supportTest = ds.Capabilities.QuerySupport(cap);
+            if (supportTest.HasValue)
+            {
+                Supports = supportTest.Value;
+            }
+            else
+            {
+                if (_wrapper != null)
+                {
+                    var wrapperType = _wrapper.GetType();
+                    QuerySupports? supports = (QuerySupports?)wrapperType.GetProperty("SupportedActions").GetGetMethod().Invoke(_wrapper, null);
+                    Supports = supports.GetValueOrDefault();
+                }
+            }
+
+        }
+
+        public IEnumerable Get()
+        {
+            if (_getMethod == null)
+            {
+                return _ds.Capabilities.GetValues(Cap);
+            }
+            return _getMethod.Invoke(_wrapper, null) as IEnumerable;
+        }
+        public object GetCurrent()
+        {
+            if (_getMethod == null)
+            {
+                return _ds.Capabilities.GetCurrent(Cap);
+            }
+            return _getCurrentMethod.Invoke(_wrapper, null);
+        }
+        public void Set(object value)
+        {
+            if (_setMethod != null && value != null)
+            {
+                _setMethod.Invoke(_wrapper, new object[] { value });
+            }
+        }
+
+        public object MyProperty { get; set; }
+
+        public CapabilityId Cap { get; private set; }
+
+        public string Name
+        {
+            get
+            {
+                if (Cap > CapabilityId.CustomBase)
+                {
+                    return "[Custom] " + ((int)Cap - (int)CapabilityId.CustomBase);
+                }
+                return Cap.ToString();
+            }
+        }
+
+        public QuerySupports Supports { get; private set; }
+
+        public override string ToString()
+        {
+            return Name;
+        }
+
+    }
+}

samples/Sample.WPF/ViewModels/DataSourceVM.cs

@@ -0,0 +1,73 @@
+using GalaSoft.MvvmLight;
+using NTwain;
+using NTwain.Data;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
+using System.Linq;
+using System.Windows.Data;
+
+namespace Sample.WPF
+{
+    /// <summary>
+    /// Wraps a data source as view model.
+    /// </summary>
+    class DataSourceVM : ViewModelBase
+    {
+        public DataSource DS { get; set; }
+
+        public string Name { get { return DS.Name; } }
+        public string Version { get { return DS.Version.Info; } }
+        public string Protocol { get { return DS.ProtocolVersion.ToString(); } }
+
+        ICollectionView _capView;
+        public DataSourceVM()
+        {
+            Caps = new ObservableCollection<CapVM>();
+            _capView = CollectionViewSource.GetDefaultView(Caps);
+            _capView.SortDescriptions.Add(new System.ComponentModel.SortDescription("Name", System.ComponentModel.ListSortDirection.Ascending));
+            _capView.Filter = FilterCapRoutine;
+        }
+
+        private bool FilterCapRoutine(object obj)
+        {
+            if (!string.IsNullOrWhiteSpace(CapFilter))
+            {
+                var vm = obj as CapVM;
+                if (vm != null)
+                {
+                    return vm.Name.IndexOf(CapFilter, System.StringComparison.OrdinalIgnoreCase) > -1;
+                }
+            }
+            return true;
+        }
+
+        public void Open()
+        {
+            Caps.Clear();
+            var rc = DS.Open();
+            //rc = DGControl.Status.Get(dsId, ref stat);
+            if (rc == ReturnCode.Success)
+            {
+                foreach (var c in DS.Capabilities.CapSupportedCaps.GetValues().Select(o => new CapVM(DS, o)))
+                {
+                    Caps.Add(c);
+                }
+            }
+        }
+
+        private string _capFilter;
+
+        public string CapFilter
+        {
+            get { return _capFilter; }
+            set
+            {
+                _capFilter = value;
+                _capView.Refresh();
+            }
+        }
+
+        public ObservableCollection<CapVM> Caps { get; private set; }
+    }
+}

samples/Sample.WPF/ViewModels/TwainVM.cs

@@ -0,0 +1,326 @@
+using CommonWin32;
+using GalaSoft.MvvmLight.Messaging;
+using NTwain;
+using NTwain.Data;
+using System;
+using System.Linq;
+using System.IO;
+using System.Reflection;
+using System.Threading;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Collections.ObjectModel;
+using GalaSoft.MvvmLight;
+using System.Windows.Input;
+using GalaSoft.MvvmLight.Command;
+using ModernWPF;
+using ModernWPF.Messages;
+
+namespace Sample.WPF
+{
+    /// <summary>
+    /// Wraps the twain session as a view model for databinding.
+    /// </summary>
+    class TwainVM : ViewModelBase
+    {
+        public TwainVM()
+        {
+            DataSources = new ObservableCollection<DataSourceVM>();
+            CapturedImages = new ObservableCollection<ImageSource>();
+
+            //this.SynchronizationContext = SynchronizationContext.Current;
+            var appId = TWIdentity.CreateFromAssembly(DataGroups.Image | DataGroups.Audio, Assembly.GetEntryAssembly());
+            _session = new TwainSession(appId);
+            _session.TransferError += _session_TransferError;
+            _session.TransferReady += _session_TransferReady;
+            _session.DataTransferred += _session_DataTransferred;
+            _session.SourceDisabled += _session_SourceDisabled;
+            _session.StateChanged += (s, e) => { RaisePropertyChanged(() => State); };
+        }
+
+        TwainSession _session;
+
+        #region properties
+
+        public string AppTitle
+        {
+            get
+            {
+                if (NTwain.PlatformInfo.Current.IsApp64Bit)
+                {
+                    return "TWAIN Data Source Tester (64bit)";
+                }
+                else
+                {
+                    return "TWAIN Data Source Tester (32bit)";
+                }
+            }
+        }
+        public ObservableCollection<DataSourceVM> DataSources { get; private set; }
+        private DataSourceVM _selectedSource;
+
+        public DataSourceVM SelectedSource
+        {
+            get { return _selectedSource; }
+            set
+            {
+                if (_session.State == 4)
+                {
+                    _session.CurrentSource.Close();
+                }
+                _selectedSource = value;
+                RaisePropertyChanged(() => SelectedSource);
+                if (_selectedSource != null)
+                {
+                    _selectedSource.Open();
+                }
+            }
+        }
+
+        public int State { get { return _session.State; } }
+
+        private IntPtr _winHandle;
+        public IntPtr WindowHandle
+        {
+            get { return _winHandle; }
+            set
+            {
+                _winHandle = value;
+                if (value == IntPtr.Zero)
+                {
+
+                }
+                else
+                {
+                    // use this for internal msg loop
+                    var rc = _session.Open();
+
+                    // use this to hook into current app loop
+                    //var rc = _session.Open(new WpfMessageLoopHook(value));
+
+                    if (rc == ReturnCode.Success)
+                    {
+                        ReloadSourcesCommand.Execute(null);
+                    }
+                }
+            }
+        }
+
+
+        private ICommand _showDriverCommand;
+        public ICommand ShowDriverCommand
+        {
+            get
+            {
+                return _showDriverCommand ?? (_showDriverCommand = new RelayCommand(() =>
+                {
+                    if (_session.State == 4)
+                    {
+                        var rc = _session.CurrentSource.Enable(SourceEnableMode.ShowUIOnly, false, WindowHandle);
+                    }
+                }, () =>
+                {
+                    return _session.State == 4 && _session.CurrentSource.Capabilities.CapEnableDSUIOnly.GetCurrent() == BoolType.True;
+                }));
+            }
+        }
+
+        private ICommand _captureCommand;
+        public ICommand CaptureCommand
+        {
+            get
+            {
+                return _captureCommand ?? (_captureCommand = new RelayCommand(() =>
+                {
+                    if (_session.State == 4)
+                    {
+                        //if (this.CurrentSource.ICapPixelType.Get().Contains(PixelType.BlackWhite))
+                        //{
+                        //    this.CurrentSource.ICapPixelType.Set(PixelType.BlackWhite);
+                        //}
+
+                        //if (this.CurrentSource.ICapXferMech.Get().Contains(XferMech.File))
+                        //{
+                        //    this.CurrentSource.ICapXferMech.Set(XferMech.File);
+                        //}
+
+                        var rc = _session.CurrentSource.Enable(SourceEnableMode.NoUI, false, WindowHandle);
+                    }
+                }, () =>
+                {
+                    return _session.State == 4;
+                }));
+            }
+        }
+
+
+        private ICommand _clearCommand;
+        public ICommand ClearCommand
+        {
+            get
+            {
+                return _clearCommand ?? (_clearCommand = new RelayCommand(() =>
+                {
+                    CapturedImages.Clear();
+                }, () =>
+                {
+                    return CapturedImages.Count > 0;
+                }));
+            }
+        }
+        private ICommand _reloadSrc;
+        public ICommand ReloadSourcesCommand
+        {
+            get
+            {
+                return _reloadSrc ?? (_reloadSrc = new RelayCommand(() =>
+                {
+                    DataSources.Clear();
+                    foreach (var s in _session.Select(s => new DataSourceVM { DS = s }))
+                    {
+                        DataSources.Add(s);
+                    }
+                }, () =>
+                {
+                    return _session.State > 2;
+                }));
+            }
+        }
+
+        /// <summary>
+        /// Gets the captured images.
+        /// </summary>
+        /// <value>
+        /// The captured images.
+        /// </value>
+        public ObservableCollection<ImageSource> CapturedImages { get; private set; }
+
+        public double MinThumbnailSize { get { return 50; } }
+        public double MaxThumbnailSize { get { return 300; } }
+
+        private double _thumbSize = 150;
+        public double ThumbnailSize
+        {
+            get { return _thumbSize; }
+            set
+            {
+                if (value > MaxThumbnailSize) { value = MaxThumbnailSize; }
+                else if (value < MinThumbnailSize) { value = MinThumbnailSize; }
+                _thumbSize = value;
+                RaisePropertyChanged(() => ThumbnailSize);
+            }
+        }
+
+
+        #endregion
+
+        void _session_SourceDisabled(object sender, EventArgs e)
+        {
+            Messenger.Default.Send(new RefreshCommandsMessage());
+        }
+
+        void _session_TransferError(object sender, TransferErrorEventArgs e)
+        {
+            App.Current.Dispatcher.BeginInvoke(new Action(() =>
+            {
+                if (e.Exception != null)
+                {
+                    Messenger.Default.Send(new DialogMessage(e.Exception.Message, null)
+                    {
+                        Caption = "Transfer Error Exception",
+                        Icon = System.Windows.MessageBoxImage.Error,
+                        Button = System.Windows.MessageBoxButton.OK
+                    });
+                }
+                else
+                {
+                    Messenger.Default.Send(new DialogMessage(string.Format("Return Code: {0}\nCondition Code: {1}", e.ReturnCode, e.SourceStatus.ConditionCode), null)
+                    {
+                        Caption = "Transfer Error",
+                        Icon = System.Windows.MessageBoxImage.Error,
+                        Button = System.Windows.MessageBoxButton.OK
+                    });
+                }
+            }));
+        }
+
+        void _session_TransferReady(object sender, TransferReadyEventArgs e)
+        {
+            if (_session.CurrentSource.Capabilities.ICapXferMech.GetCurrent() == XferMech.File)
+            {
+                var formats = _session.CurrentSource.Capabilities.ICapImageFileFormat.GetValues();
+                var wantFormat = formats.Contains(FileFormat.Tiff) ? FileFormat.Tiff : FileFormat.Bmp;
+
+                var fileSetup = new TWSetupFileXfer
+                {
+                    Format = wantFormat,
+                    FileName = GetUniqueName(Path.GetTempPath(), "twain-test", "." + wantFormat)
+                };
+                var rc = _session.CurrentSource.DGControl.SetupFileXfer.Set(fileSetup);
+            }
+        }
+
+        string GetUniqueName(string dir, string name, string ext)
+        {
+            var filePath = Path.Combine(dir, name + ext);
+            int next = 1;
+            while (File.Exists(filePath))
+            {
+                filePath = Path.Combine(dir, string.Format("{0} ({1}){2}", name, next++, ext));
+            }
+            return filePath;
+        }
+
+        void _session_DataTransferred(object sender, DataTransferredEventArgs e)
+        {
+            ImageSource img = GenerateThumbnail(e);
+            if (img != null)
+            {
+                App.Current.Dispatcher.BeginInvoke(new Action(() =>
+                {
+                    CapturedImages.Add(img);
+                }));
+            }
+        }
+
+
+        ImageSource GenerateThumbnail(DataTransferredEventArgs e)
+        {
+            BitmapSource img = null;
+            if (e.NativeData != IntPtr.Zero)
+            {
+                using (var stream = e.GetNativeImageStream())
+                {
+                    if (stream != null)
+                    {
+                        img = stream.ConvertToWpfBitmap(300, 0);
+                    }
+                }
+            }
+            else if (!string.IsNullOrEmpty(e.FileDataPath))
+            {
+                img = new BitmapImage(new Uri(e.FileDataPath));
+            }
+
+            //if (img != null)
+            //{
+            //    // from http://stackoverflow.com/questions/18189501/create-thumbnail-image-directly-from-header-less-image-byte-array
+            //    var scale = MaxThumbnailSize / img.PixelWidth;
+            //    var transform = new ScaleTransform(scale, scale);
+            //    var thumbnail = new TransformedBitmap(img, transform);
+            //    img = new WriteableBitmap(new TransformedBitmap(img, transform));
+            //    img.Freeze();
+            //}
+            return img;
+        }
+
+        internal void CloseDown()
+        {
+            if (_session.State == 4)
+            {
+                _session.CurrentSource.Close();
+            }
+            _session.Close();
+        }
+    }
+}

samples/Sample.WPF/app.config

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0,Profile=Client" /></startup>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="Microsoft.Practices.ServiceLocation" publicKeyToken="31bf3856ad364e35" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>

samples/Sample.WPF/packages.config

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="CommonServiceLocator" version="1.3" targetFramework="net40-Client" />
+  <package id="CommonWin32" version="2.0.5.5" targetFramework="net40-Client" />
+  <package id="Microsoft.WindowsAPICodePack-Core" version="1.1.0.0" targetFramework="net40-Client" />
+  <package id="Microsoft.WindowsAPICodePack-Shell" version="1.1.0.0" targetFramework="net40-Client" />
+  <package id="ModernWPF" version="1.2.9.4" targetFramework="net40-Client" />
+  <package id="ModernWPF.Mvvm" version="0.7.0" targetFramework="net40-Client" />
+  <package id="MvvmLightLibs" version="5.0.2.0" targetFramework="net40-Client" />
+</packages>