Remove dependency on IWshRuntimeLibrary by using reflection instead

Author: dmnd

Caffeinated.csproj

@@ -60,6 +60,7 @@
     <Compile Include="BaseForm.cs">
       <SubType>Form</SubType>
     </Compile>
+    <Compile Include="ReflectedShell.cs" />
     <Compile Include="Settings.cs" />
     <Compile Include="SettingsForm.cs">
       <SubType>Form</SubType>
@@ -98,29 +99,12 @@
       <DesignTimeSharedInput>True</DesignTimeSharedInput>
     </Compile>
   </ItemGroup>
-  <ItemGroup>
-    <COMReference Include="IWshRuntimeLibrary">
-      <Guid>{F935DC20-1CF0-11D0-ADB9-00C04FD58A0B}</Guid>
-      <VersionMajor>1</VersionMajor>
-      <VersionMinor>0</VersionMinor>
-      <Lcid>0</Lcid>
-      <WrapperTool>tlbimp</WrapperTool>
-      <Isolated>False</Isolated>
-      <EmbedInteropTypes>True</EmbedInteropTypes>
-    </COMReference>
-  </ItemGroup>
   <ItemGroup>
     <None Include="Resources\cup-coffee-icon.ico" />
   </ItemGroup>
   <ItemGroup>
     <None Include="Resources\cup-coffee-icon-bw.ico" />
   </ItemGroup>
-  <ItemGroup>
-    <None Include="Resources\cup-coffee-icon-128.png" />
-  </ItemGroup>
-  <ItemGroup>
-    <None Include="Resources\cup-coffee-icon-48.png" />
-  </ItemGroup>
   <ItemGroup>
     <Content Include="Resources\cup-coffee-icon-64.png" />
     <Content Include="Resources\cup-coffee-icon-96.png" />

ReflectedShell.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Reflection;
+using System.IO;
+
+namespace Caffeinated {
+    class ReflectedShell {
+        private const BindingFlags PublicInstance =
+            BindingFlags.Public | BindingFlags.Instance;
+
+        private Type type;
+        private object shell;
+
+        public ReflectedShell() {
+            this.type = Type.GetTypeFromProgID("WScript.Shell");
+            this.shell = Activator.CreateInstance(type);
+        }
+
+        public object CreateShortcut(
+            string linkFileName,
+            string targetPath,
+            string workingDir = null
+
+        ) {
+            object shortcut = type.InvokeMember(
+                "CreateShortcut", PublicInstance | BindingFlags.InvokeMethod,
+                null, shell, new object[] { linkFileName }
+            );
+
+            Type shortcutType = shortcut.GetType();
+            shortcutType.InvokeMember(
+                "TargetPath", PublicInstance | BindingFlags.SetProperty,
+                null, shortcut, new object[] { targetPath }
+            );
+
+            if (workingDir != null) {
+                shortcutType.InvokeMember(
+                    "WorkingDirectory",
+                    PublicInstance | BindingFlags.SetProperty,
+                    null, shortcut, new object[] { workingDir }
+                );
+            }
+
+            shortcutType.InvokeMember(
+                "Save", PublicInstance | BindingFlags.InvokeMethod,
+                null, shortcut, null
+            );
+
+            return shortcut;
+        }
+
+        public string GetSpecialFolder(string item) {
+            object specFolders = type.InvokeMember(
+                "SpecialFolders", PublicInstance | BindingFlags.GetProperty,
+                null, shell, null
+            );
+
+            Type specFoldersType = specFolders.GetType();
+            object path = specFoldersType.InvokeMember(
+                "Item", PublicInstance | BindingFlags.InvokeMethod,
+                null, specFolders, new object[] { item }
+            );
+
+            return path as string;
+        }
+    }
+}

SettingsForm.cs

@@ -46,25 +46,22 @@ EventArgs e
             }
         }
 
-        string GetShortcutPath(IWshRuntimeLibrary.WshShell shell = null) {
+        static string GetShortcutPath(ReflectedShell shell = null) {
             if (shell == null) {
-                shell = new IWshRuntimeLibrary.WshShell();
+                shell = new ReflectedShell();
             }
-            var startup = (string)shell.SpecialFolders.Item("Startup");
+            var startup = shell.GetSpecialFolder("Startup");
             return Path.Combine(startup, "Caffeinated.lnk");
         }
 
         private void StartupChkBox_CheckedChanged(object sender, EventArgs e) {
-            var shell = new IWshRuntimeLibrary.WshShell();
+            var shell = new ReflectedShell();
             var shortcut = GetShortcutPath(shell);
             var executable = Assembly.GetExecutingAssembly()
                                      .GetName().CodeBase;
             if (StartupChkBox.Checked) {
                 // create shortcut in startup items folder in start menu
-                object objLink = shell.CreateShortcut(shortcut);
-                var link = (IWshRuntimeLibrary.IWshShortcut)objLink;
-                link.TargetPath = executable;
-                link.Save();
+                shell.CreateShortcut(shortcut, executable);
             }
             else {
                 // remove shortcut if it exists