Restore SEBPatch

SafeExamBrowser.Monitoring/Clipboard.cs

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2024 ETH Zürich, IT Services
+ * Copyright (c) 2025 ETH Zürich, IT Services
  * 
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -32,6 +32,8 @@ namespace SafeExamBrowser.Monitoring
 		public void Initialize(ClipboardPolicy policy)
 		{
 			this.policy = policy;
+
+			nativeMethods.EmptyClipboard();
 			logger.Debug("Cleared clipboard.");
 
 			if (policy != ClipboardPolicy.Allow)
@@ -51,6 +53,7 @@ namespace SafeExamBrowser.Monitoring
 
 		public void Terminate()
 		{
+			nativeMethods.EmptyClipboard();
 			logger.Debug("Cleared clipboard.");
 
 			if (policy != ClipboardPolicy.Allow)
@@ -68,7 +71,7 @@ namespace SafeExamBrowser.Monitoring
 
 		private void Timer_Elapsed(object sender, ElapsedEventArgs e)
 		{
-			
+			nativeMethods.EmptyClipboard();
 		}
 	}
 }