initial commit

OBS.cs

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+using OBS.WebSocket.NET;
+using System;
+using System.Threading.Tasks;
+
+namespace PowerPointToOBSSceneSwitcher
+{
+
+	public class ObsLocal : IDisposable
+	{
+		private bool _DisposedValue;
+		private ObsWebSocket _OBS;
+
+		public ObsLocal() { }
+
+		public Task Connect()
+		{
+			_OBS = new ObsWebSocket();
+			_OBS.Connect($"ws://127.0.0.1:4444", "");
+			return Task.CompletedTask;
+		}
+
+		public bool ChangeScene(string scene)
+        {
+			_OBS.Api.SetCurrentScene(scene);
+			return true;
+        }
+
+		protected virtual void Dispose(bool disposing)
+		{
+			if (!_DisposedValue)
+			{
+				if (disposing)
+				{
+					// TODO: dispose managed state (managed objects)
+				}
+
+				_OBS.Disconnect();
+				_OBS = null;
+				_DisposedValue = true;
+			}
+		}
+
+		~ObsLocal()
+		{
+			// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
+			Dispose(disposing: false);
+		}
+
+		public void Dispose()
+		{
+			// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
+			Dispose(disposing: true);
+			GC.SuppressFinalize(this);
+		}
+	}
+}

PowerPointToOBSSceneSwitcher.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <COMReference Include="Microsoft.Office.Interop.PowerPoint">
+      <Guid>{91493440-5a91-11cf-8700-00aa0060263b}</Guid>
+      <VersionMajor>2</VersionMajor>
+      <VersionMinor>12</VersionMinor>
+      <WrapperTool>primary</WrapperTool>
+      <Lcid>0</Lcid>
+      <Isolated>false</Isolated>
+      <EmbedInteropTypes>True</EmbedInteropTypes>
+    </COMReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="OBS.WebSocket.NET" Version="4.7.2" />
+  </ItemGroup>
+
+</Project>

PowerPointToOBSSceneSwitcher.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30428.66
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PowerPointToOBSSceneSwitcher", "PowerPointToOBSSceneSwitcher.csproj", "{8A844363-5A92-403B-90CD-BFCB30ED5054}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8A844363-5A92-403B-90CD-BFCB30ED5054}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8A844363-5A92-403B-90CD-BFCB30ED5054}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8A844363-5A92-403B-90CD-BFCB30ED5054}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8A844363-5A92-403B-90CD-BFCB30ED5054}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {515C02C0-0CF2-4890-A1FB-4D6A5F115CD6}
+	EndGlobalSection
+EndGlobal

Program.cs

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+using System;
+using System.IO;
+using System.Threading.Tasks;
+using Microsoft.Office.Interop.PowerPoint;
+//Thanks to CSharpFritz and EngstromJimmy for their gists, snippets, and thoughts.
+
+namespace PowerPointToOBSSceneSwitcher
+{
+    class Program
+    {
+        private static Application ppt = new Microsoft.Office.Interop.PowerPoint.Application();
+        private static ObsLocal OBS;
+        static async Task Main(string[] args)
+        {
+            Console.Write("Connecting to PowerPoint...");
+            ppt.SlideShowNextSlide += App_SlideShowNextSlide;
+            Console.WriteLine("connected");
+
+            Console.Write("Connecting to OBS...");
+            OBS = new ObsLocal();
+            await OBS.Connect();
+            Console.WriteLine("connected");
+
+            Console.ReadLine();
+        }
+
+        async static void App_SlideShowNextSlide(SlideShowWindow Wn)
+        {
+            if (Wn != null)
+            {
+                Console.WriteLine($"Moved to Slide Number {Wn.View.Slide.SlideNumber}");
+                //Text starts at Index 2 ¯\_(ツ)_/¯
+                var note = String.Empty;
+                try { note = Wn.View.Slide.NotesPage.Shapes[2].TextFrame.TextRange.Text; }
+                catch { /*no notes*/ }
+                if (note.StartsWith("OBS:")) {
+                    note = new StringReader(note).ReadLine().Substring(4);
+                    Console.WriteLine($"  Switching to OBS Scene named \"{note}\"");
+                    OBS.ChangeScene(note);
+                }
+            }
+        }
+    }
+}