SEBWIN-611: Attempt to correctly resize lockscreen on display resolution change.

SafeExamBrowser.Client/ClientController.cs

@@ -625,9 +625,12 @@ namespace SafeExamBrowser.Client
 		{
 			logger.Info("Re-initializing working area...");
 			displayMonitor.InitializePrimaryDisplay(Settings.Taskbar.EnableTaskbar ? taskbar.GetAbsoluteHeight() : 0);
+
 			logger.Info("Re-initializing shell...");
 			actionCenter.InitializeBounds();
+			lockScreen?.InitializeBounds();
 			taskbar.InitializeBounds();
+
 			logger.Info("Desktop successfully restored.");
 
 			if (!displayMonitor.ValidateConfiguration(Settings.Display).IsAllowed)

SafeExamBrowser.UserInterface.Contracts/Windows/ILockScreen.cs

@@ -20,6 +20,11 @@ namespace SafeExamBrowser.UserInterface.Contracts.Windows
 		/// </summary>
 		void Cancel();
 
+		/// <summary>
+		/// Expands the lock screen across all active displays and resizes it accordingly.
+		/// </summary>
+		void InitializeBounds();
+
 		/// <summary>
 		/// Waits for the user to provide the required input to unlock the application.
 		/// </summary>

SafeExamBrowser.UserInterface.Desktop/Windows/LockScreen.xaml.cs

@@ -68,6 +68,20 @@ namespace SafeExamBrowser.UserInterface.Desktop.Windows
 			Dispatcher.Invoke(CloseAll);
 		}
 
+		public void InitializeBounds()
+		{
+			foreach (var window in windows)
+			{
+				window.Topmost = true;
+				window.WindowState = WindowState.Maximized;
+				window.Activate();
+			}
+
+			Topmost = true;
+			WindowState = WindowState.Maximized;
+			Activate();
+		}
+
 		public new void Show()
 		{
 			Dispatcher.Invoke(ShowAll);

SafeExamBrowser.UserInterface.Mobile/Windows/LockScreen.xaml.cs

@@ -68,6 +68,11 @@ namespace SafeExamBrowser.UserInterface.Mobile.Windows
 			Dispatcher.Invoke(CloseAll);
 		}
 
+		public void InitializeBounds()
+		{
+			// TODO
+		}
+
 		public new void Show()
 		{
 			Dispatcher.Invoke(ShowAll);