added project for custom controls

MultiTerm.Wpf.CustomControl/AssemblyInfo.cs

@@ -0,0 +1,10 @@
+using System.Windows;
+
+[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)
+)]

MultiTerm.Wpf.CustomControl/CustomControl1.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+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.Navigation;
+using System.Windows.Shapes;
+
+namespace MultiTerm.Wpf.CustomControl
+{
+    /// <summary>
+    /// Follow steps 1a or 1b and then 2 to use this custom control in a XAML file.
+    ///
+    /// Step 1a) Using this custom control in a XAML file that exists in the current project.
+    /// Add this XmlNamespace attribute to the root element of the markup file where it is 
+    /// to be used:
+    ///
+    ///     xmlns:MyNamespace="clr-namespace:MultiTerm.Wpf.CustomControl"
+    ///
+    ///
+    /// Step 1b) Using this custom control in a XAML file that exists in a different project.
+    /// Add this XmlNamespace attribute to the root element of the markup file where it is 
+    /// to be used:
+    ///
+    ///     xmlns:MyNamespace="clr-namespace:MultiTerm.Wpf.CustomControl;assembly=MultiTerm.Wpf.CustomControl"
+    ///
+    /// You will also need to add a project reference from the project where the XAML file lives
+    /// to this project and Rebuild to avoid compilation errors:
+    ///
+    ///     Right click on the target project in the Solution Explorer and
+    ///     "Add Reference"->"Projects"->[Select this project]
+    ///
+    ///
+    /// Step 2)
+    /// Go ahead and use your control in the XAML file.
+    ///
+    ///     <MyNamespace:CustomControl1/>
+    ///
+    /// </summary>
+    public class CustomControl1 : Control
+    {
+        static CustomControl1()
+        {
+            DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomControl1), new FrameworkPropertyMetadata(typeof(CustomControl1)));
+        }
+    }
+}

MultiTerm.Wpf.CustomControl/MultiTerm.Wpf.CustomControl.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+</Project>

MultiTerm.Wpf.CustomControl/Themes/Generic.xaml

@@ -0,0 +1,17 @@
+<ResourceDictionary
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="clr-namespace:MultiTerm.Wpf.CustomControl">
+    <Style TargetType="{x:Type local:CustomControl1}">
+        <Setter Property="Template">
+            <Setter.Value>
+                <ControlTemplate TargetType="{x:Type local:CustomControl1}">
+                    <Border Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            BorderThickness="{TemplateBinding BorderThickness}">
+                    </Border>
+                </ControlTemplate>
+            </Setter.Value>
+        </Setter>
+    </Style>
+</ResourceDictionary>

MultiTerm.sln

@@ -7,7 +7,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MultiTerm.Wpf", "MultiTerm.
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MultiTerm.Core", "MultiTerm.Core\MultiTerm.Core.csproj", "{A4ED5CBB-954E-4F23-B9CB-8E30DF7B8F48}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Common", "Common\Common.csproj", "{26454190-1B60-46BE-8234-3207FB00D8A4}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Common", "Common\Common.csproj", "{26454190-1B60-46BE-8234-3207FB00D8A4}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MultiTerm.Wpf.CustomControl", "MultiTerm.Wpf.CustomControl\MultiTerm.Wpf.CustomControl.csproj", "{9E308B45-2F71-44DD-A640-40953FD644D7}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -27,6 +29,10 @@ Global
 		{26454190-1B60-46BE-8234-3207FB00D8A4}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{26454190-1B60-46BE-8234-3207FB00D8A4}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{26454190-1B60-46BE-8234-3207FB00D8A4}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9E308B45-2F71-44DD-A640-40953FD644D7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9E308B45-2F71-44DD-A640-40953FD644D7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9E308B45-2F71-44DD-A640-40953FD644D7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9E308B45-2F71-44DD-A640-40953FD644D7}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE