fix border thickness being added to non-decorated windows.

7 years ago · 658ff21d0f
1 changed files with 5 additions and 1 deletions
--- a/src/Windows/Avalonia.Win32/WindowImpl.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.cs
@ -149,7 +149,11 @@ namespace Avalonia.Win32
            if (value != ClientSize)
            {
                value *= Scaling;
-                value += BorderThickness;
+
+                if (_decorated)
+                {
+                    value += BorderThickness;
+                }

                UnmanagedMethods.SetWindowPos(
                    _hwnd,