copy of simvar watcher for example

.gitignore

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+################################################################################
+# This .gitignore file was automatically created by Microsoft(R) Visual Studio.
+################################################################################
+
+/bin/x64
+/.vs/Simvars/v16
+/obj/x64/Debug

App.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
+    </startup>
+</configuration>

App.xaml

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+<Application x:Class="Simvars.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:Simvars"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+
+    </Application.Resources>
+</Application>

App.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace Simvars
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

MainWindow.xaml

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+<Window x:Class="Simvars.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:Simvars"
+        xmlns:simco="clr-namespace:Microsoft.FlightSimulator.SimConnect;assembly=Microsoft.FlightSimulator.SimConnect"
+        xmlns:scm="clr-namespace:System.ComponentModel;assembly=WindowsBase"
+        xmlns:sys="clr-namespace:System;assembly=mscorlib"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="700" Width="800" MinWidth="800" MinHeight="700">
+
+    <Window.Resources>
+        <ObjectDataProvider x:Key="SimObjectTypeFromEnum" MethodName="GetValues" ObjectType="{x:Type sys:Enum}">
+            <ObjectDataProvider.MethodParameters>
+                <x:Type TypeName="simco:SIMCONNECT_SIMOBJECT_TYPE"/>
+            </ObjectDataProvider.MethodParameters>
+        </ObjectDataProvider>
+        <CollectionViewSource x:Key="AlphaSortedSimvarNames" Source="{Binding aSimvarNames}">
+            <CollectionViewSource.SortDescriptions>
+                <scm:SortDescription />
+            </CollectionViewSource.SortDescriptions>
+        </CollectionViewSource>
+        <CollectionViewSource x:Key="AlphaSortedUnitNames" Source="{Binding aUnitNames}">
+            <CollectionViewSource.SortDescriptions>
+                <scm:SortDescription />
+            </CollectionViewSource.SortDescriptions>
+        </CollectionViewSource>
+    </Window.Resources>
+
+    <Grid>
+        <TextBlock Width="236" Margin="10,11,546,-11" Height="23" HorizontalAlignment="Left" VerticalAlignment="Top">
+            <Hyperlink x:Name="hl_SimConnect" NavigateUri="https://msdn.microsoft.com/en-us/library/cc526983.aspx" RequestNavigate="LinkOnRequestNavigate">
+                SimConnect Reference
+            </Hyperlink>
+        </TextBlock>
+        <TextBlock Margin="10,33,546,613" Width="236" VerticalAlignment="Top" HorizontalAlignment="Left" Height="23">
+            <Hyperlink x:Name="hl_SimVariables" NavigateUri="https://msdn.microsoft.com/en-us/library/cc526981.aspx" RequestNavigate="LinkOnRequestNavigate" >
+                Simulation Variables Reference
+            </Hyperlink>
+        </TextBlock>
+
+        <Button x:Name="btn_Connection" Content="{Binding sConnectButtonLabel}" Command="{Binding cmdToggleConnect}" HorizontalAlignment="Left" Margin="29,68,0,0" VerticalAlignment="Top" Width="146" Height="48"/>
+        <Button x:Name="btn_LoadFile" Content="Load File" Command="{Binding cmdLoadFiles}" HorizontalAlignment="Left" Margin="29,156,0,0" VerticalAlignment="Top" Width="100" Height="23" RenderTransformOrigin="0.423,0.841"/>
+        <Button x:Name="btn_SaveFile" Content="Save File" Command="{Binding cmdSaveFile}" HorizontalAlignment="Left" Margin="148,156,0,0" VerticalAlignment="Top" Width="100" Height="23"/>
+        <CheckBox Content="Save values" IsChecked="{Binding bSaveValues, Mode=TwoWay}" HorizontalAlignment="Left" Margin="167,184,0,0" VerticalAlignment="Top" RenderTransformOrigin="0.597,0.489"/>
+
+        <ListView x:Name="lv_Simvars" ItemsSource="{Binding lSimvarRequests}" SelectedItem="{Binding oSelectedSimvarRequest, Mode=OneWayToSource}" Margin="270,10,10,10">
+            <ListView.ItemContainerStyle>
+                <Style TargetType="ListViewItem">
+                    <Style.Triggers>
+                        <DataTrigger Binding="{Binding bStillPending}" Value="True">
+                            <Setter Property="Background" Value="#55D3D373" />
+                        </DataTrigger>
+                    </Style.Triggers>
+                </Style>
+            </ListView.ItemContainerStyle>
+            <ListView.ContextMenu>
+                <ContextMenu>
+                    <MenuItem Header="Remove" Command="{Binding cmdRemoveSelectedRequest}" />
+                </ContextMenu>
+            </ListView.ContextMenu>
+            <ListView.View>
+                <GridView>
+                    <GridViewColumn Header="Simvar" Width="200" DisplayMemberBinding="{Binding sName}"/>
+                    <GridViewColumn Header="Value" Width="150" DisplayMemberBinding="{Binding dValue, StringFormat=\{0:F9\}}"/>
+                    <GridViewColumn Header="Units" Width="150" DisplayMemberBinding="{Binding sUnits}"/>
+                </GridView>
+            </ListView.View>
+        </ListView>
+
+        <Label Content="SimObject" HorizontalAlignment="Left" Margin="10,208,0,0" VerticalAlignment="Top" Height="23" Width="83"/>
+        <ComboBox x:Name="cbb_SimObjectType" ItemsSource="{Binding Source={StaticResource SimObjectTypeFromEnum}}" SelectedValue="{Binding eSimObjectType, Mode=OneWayToSource}" SelectedIndex="0" HorizontalAlignment="Left" Margin="11,231,0,0" VerticalAlignment="Top" Width="119" Height="23"/>
+        <Label Content="ObjectID" HorizontalAlignment="Left" Margin="165,208,0,0" VerticalAlignment="Top" Height="23" Width="71"/>
+        <ComboBox x:Name="cbb_ObjectIds" ItemsSource="{Binding lObjectIDs}" SelectedValue="{Binding iObjectIdRequest, Mode=OneWayToSource}" IsEnabled="{Binding bObjectIDSelectionEnabled}" SelectedIndex="0" HorizontalAlignment="Left" Margin="165,231,0,0" VerticalAlignment="Top" Width="48" Height="23"/>
+
+        <Label Content="Simvar Name" HorizontalAlignment="Left" Margin="10,259,0,0" VerticalAlignment="Top" Height="23" Width="83"/>
+        <ComboBox x:Name="cbb_SimvarNames" ItemsSource="{Binding Source={StaticResource AlphaSortedSimvarNames}}" SelectedValue="{Binding sSimvarRequest, Mode=OneWayToSource}" SelectedIndex="0" HorizontalAlignment="Left" Margin="10,282,0,0" VerticalAlignment="Top" Width="238" Height="23"/>
+        <Label Content="Index" HorizontalAlignment="Left" Margin="10,310,0,0" VerticalAlignment="Top" Height="23" Width="71"/>
+        <ComboBox x:Name="cbb_Indices" ItemsSource="{Binding aIndices}" SelectedValue="{Binding iIndexRequest, Mode=OneWayToSource}" SelectedIndex="0" HorizontalAlignment="Left" Margin="10,333,0,0" VerticalAlignment="Top" Width="45" Height="23"/>
+        <Label Content="Units" HorizontalAlignment="Left" Margin="70,310,0,0" VerticalAlignment="Top" Height="23" Width="83"/>
+        <ComboBox x:Name="cbb_UnitNames" ItemsSource="{Binding Source={StaticResource AlphaSortedUnitNames}}" SelectedValue="{Binding sUnitRequest, Mode=OneWayToSource}" SelectedIndex="0" HorizontalAlignment="Left" Margin="70,333,0,0" VerticalAlignment="Top" Width="178" Height="23"/>
+        <Button x:Name="btn_Request" Content="Add request &gt;" Command="{Binding cmdAddRequest}" HorizontalAlignment="Left" Margin="158,370,0,0" VerticalAlignment="Top" Width="90" Height="23
+                "/>
+
+        <Label Content="Value" HorizontalAlignment="Left" Margin="10,396,0,0" VerticalAlignment="Top" Height="23" Width="83"/>
+        <TextBox x:Name="tb_SetValue" PreviewTextInput="NumberValidationTextBox" Text="{Binding sSetValue, Mode=OneWayToSource}" HorizontalAlignment="Left" Height="23" Margin="10,419,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120"/>
+        <Button x:Name="btn_TrySetValue" Content="Try set value &gt;" Command="{Binding cmdTrySetValue}" IsEnabled="{Binding bConnected}" HorizontalAlignment="Left" Margin="158,419,0,0" VerticalAlignment="Top" Width="90" Height="23"/>
+
+        <Ellipse HorizontalAlignment="Left" Height="14" Margin="251,10,0,0" Stroke="Black" VerticalAlignment="Top" Width="14">
+            <Ellipse.Style>
+                <Style TargetType="Ellipse">
+                    <Style.Triggers>
+                        <DataTrigger Binding="{Binding bConnected}" Value="false">
+                            <Setter Property="Fill" Value="#FFFF5030" />
+                        </DataTrigger>
+                        <DataTrigger Binding="{Binding bConnected}" Value="true">
+                            <Setter Property="Fill" Value="#FF50FF30" />
+                        </DataTrigger>
+                        <DataTrigger Binding="{Binding bOddTick}" Value="true">
+                            <!-- Assume bOddTick is true only when bConnected is true-->
+                            <Setter Property="Fill" Value="#FF45E2F4" />
+                        </DataTrigger>
+                    </Style.Triggers>
+                </Style>
+            </Ellipse.Style>
+        </Ellipse>
+
+        <Label Content="Errors" HorizontalAlignment="Left" Margin="10,454,0,0" VerticalAlignment="Top" Height="23" Width="83"/>
+
+        <ListBox ItemsSource="{Binding lErrorMessages}" RenderTransformOrigin="0.5,0.5" Width="236" HorizontalAlignment="Left" Margin="10,482,0,10">
+            <ListBox.ItemContainerStyle>
+                <Style TargetType="ListBoxItem">
+                    <Setter Property="Foreground" Value="Red"/>
+                </Style>
+            </ListBox.ItemContainerStyle>
+            <ListBox.ItemsPanel>
+                <ItemsPanelTemplate>
+                    <VirtualizingStackPanel VerticalAlignment="Bottom"/>
+                </ItemsPanelTemplate>
+            </ListBox.ItemsPanel>
+        </ListBox>
+
+        <Label Content="Frequency" HorizontalAlignment="Left" Margin="183,61,0,0" VerticalAlignment="Top" Height="25"/>
+        <Slider x:Name="sl_Tick" Value="1000" Thumb.DragCompleted="Slider_DragCompleted" HorizontalAlignment="Left" Margin="183,86,0,0" VerticalAlignment="Top" Width="63" Minimum="100" Maximum="3000" LargeChange="100" SmallChange="10" IsDirectionReversed="True" />
+        <CheckBox Content="Use FSX-compatible configuration" IsChecked="{Binding bFSXcompatible, Mode=TwoWay}" HorizontalAlignment="Left" Margin="29,121,0,0" VerticalAlignment="Top" Width="217"/>
+
+    </Grid>
+
+</Window>

MainWindow.xaml.cs

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+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Controls.Primitives;
+using System.Windows.Input;
+using System.Windows.Interop;
+using System.Windows.Navigation;
+
+namespace Simvars
+{
+    interface IBaseSimConnectWrapper
+    {
+        int GetUserSimConnectWinEvent();
+        void ReceiveSimConnectMessage();
+        void SetWindowHandle(IntPtr _hWnd);
+        void Disconnect();
+    }
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            this.DataContext = new SimvarsViewModel();
+
+            InitializeComponent();
+        }
+
+        protected HwndSource GetHWinSource()
+        {
+            return PresentationSource.FromVisual(this) as HwndSource;
+        }
+
+        protected override void OnSourceInitialized(EventArgs e)
+        {
+            base.OnSourceInitialized(e);
+            GetHWinSource().AddHook(WndProc);
+            if (this.DataContext is IBaseSimConnectWrapper oBaseSimConnectWrapper)
+            {
+                oBaseSimConnectWrapper.SetWindowHandle(GetHWinSource().Handle);
+            }
+        }
+
+        private IntPtr WndProc(IntPtr hWnd, int iMsg, IntPtr hWParam, IntPtr hLParam, ref bool bHandled)
+        {
+            if (this.DataContext is IBaseSimConnectWrapper oBaseSimConnectWrapper)
+            {
+                try
+                {
+                    if (iMsg == oBaseSimConnectWrapper.GetUserSimConnectWinEvent())
+                    {
+                        oBaseSimConnectWrapper.ReceiveSimConnectMessage();
+                    }
+                }
+                catch
+                {
+                    oBaseSimConnectWrapper.Disconnect();
+                }
+            }
+
+            return IntPtr.Zero;
+        }
+
+        private void LinkOnRequestNavigate(object sender, RequestNavigateEventArgs e)
+        {
+            System.Diagnostics.Process.Start(e.Uri.ToString());
+        }
+
+        private void NumberValidationTextBox(object sender, TextCompositionEventArgs e)
+        {
+            string sText = e.Text;
+            foreach (char c in sText)
+            {
+                if ( ! (('0' <= c && c <= '9') || c == '+' || c == '-' || c == ',') )
+                {
+                    e.Handled = true;
+                    break;
+                }
+            }
+        }
+
+        private void Slider_DragCompleted(object sender, DragCompletedEventArgs e)
+        {
+            if (sender is Slider oSlider && this.DataContext is SimvarsViewModel oContext)
+            {
+                oContext.SetTickSliderValue((int)oSlider.Value);
+            }
+        }
+    }
+}

Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Resources;
+using System.Runtime.CompilerServices;
+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("Simvars")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Simvars")]
+[assembly: AssemblyCopyright("Copyright ©  2018")]
+[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")]