Let TAStudio take control of the Mainform StopMovie function

BizHawk.Client.EmuHawk/IControlMainform.cs

@@ -2,6 +2,10 @@
 {
 	public interface IControlMainform
 	{
+		bool WantsToControlReadOnly { get; }
 		void ToggleReadOnly();
+
+		bool WantsToCOntrolStopMovie { get; }
+		void StopMovie();
 	}
 }

BizHawk.Client.EmuHawk/MainForm.Movie.cs

@@ -163,8 +163,15 @@ namespace BizHawk.Client.EmuHawk
 
 		public void StopMovie(bool saveChanges = true)
 		{
-			Global.MovieSession.StopMovie(saveChanges);
-			SetMainformMovieInfo();
+			if (IsSlave && _master.WantsToCOntrolStopMovie)
+			{
+				_master.StopMovie();
+			}
+			else
+			{
+				Global.MovieSession.StopMovie(saveChanges);
+				SetMainformMovieInfo();
+			}
 		}
 	}
 }

BizHawk.Client.EmuHawk/MainForm.cs

@@ -1896,7 +1896,7 @@ namespace BizHawk.Client.EmuHawk
 
 		private void ToggleReadOnly()
 		{
-			if (IsSlave)
+			if (IsSlave && _master.WantsToControlReadOnly)
 			{
 				_master.ToggleReadOnly();
 			}

BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.IControlMainForm.cs

@@ -2,9 +2,17 @@
 {
 	public partial class TAStudio : IControlMainform
 	{
+		public bool WantsToControlReadOnly { get { return true; } }
 		public void ToggleReadOnly()
 		{
 			GlobalWin.OSD.AddMessage("TAStudio does not allow manual readonly toggle");
 		}
+
+		public bool WantsToCOntrolStopMovie { get { return true; } }
+		public void StopMovie()
+		{
+			this.Focus();
+			NewTasMenuItem_Click(null, null);
+		}
 	}
 }

BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.cs

@@ -46,7 +46,7 @@ namespace BizHawk.Client.EmuHawk
 				if (AskSave())
 				{
 					SaveConfigSettings();
-					GlobalWin.MainForm.StopMovie(saveChanges: true);
+					GlobalWin.MainForm.StopMovie(saveChanges: false);
 					DisengageTastudio();
 				}
 				else
@@ -138,11 +138,12 @@ namespace BizHawk.Client.EmuHawk
 				PathManager.FilesystemSafeName(Global.Game) + "." + TasMovie.Extension);
 		}
 
-		private void StartSessionFromTasMovie()
+		private void StartNewTasMovie()
 		{
 			if (AskSave())
 			{
-				GlobalWin.MainForm.StartNewMovie(_tas, record: false);
+				NewTasMovie();
+				GlobalWin.MainForm.StartNewMovie(_tas, record: true);
 				RefreshDialog();
 			}
 		}
@@ -295,7 +296,7 @@ namespace BizHawk.Client.EmuHawk
 		private void NewTasMenuItem_Click(object sender, EventArgs e)
 		{
 			GlobalWin.OSD.AddMessage("new TAStudio session started");
-			StartSessionFromTasMovie();
+			StartNewTasMovie();
 		}
 
 		private void OpenTasMenuItem_Click(object sender, EventArgs e)