Fixed PossibleNullReferenceException.

9 years ago · 87e8cb8923
1 changed files with 5 additions and 2 deletions
--- a/src/Avalonia.Controls/Window.cs
+++ b/src/Avalonia.Controls/Window.cs
@ -336,8 +336,11 @@ namespace Avalonia.Controls
        {
            if (WindowStartupLocation == WindowStartupLocation.CenterScreen)
            {
-                var positionAsSize = PlatformImpl.MaxClientSize / 2 - ClientSize / 2;
-                Position = new Point(positionAsSize.Width, positionAsSize.Height);
+                if (PlatformImpl != null)
+                {
+                    var positionAsSize = PlatformImpl.MaxClientSize / 2 - ClientSize / 2;
+                    Position = new Point(positionAsSize.Width, positionAsSize.Height);
+                }
            }
            else if (WindowStartupLocation == WindowStartupLocation.CenterOwner)
            {