only set window position on extended margins update when window is vi…

…sible
AvaloniaUI · Mar 13, 2024 · 207efa1 · 207efa1
1 parent fb632f0
commit 207efa1
Showing 1 changed file with 16 additions and 12 deletions.
diff --git a/src/Windows/Avalonia.Win32/WindowImpl.cs b/src/Windows/Avalonia.Win32/WindowImpl.cs
@@ -1468,21 +1468,25 @@ private void UpdateWindowProperties(WindowProperties newProperties, bool forceCh
 
                 DwmExtendFrameIntoClientArea(_hwnd, ref margins);
 
-                GetClientRect(_hwnd, out var oldClientRect);
-                var oldClientRectOrigin = new POINT();
-                ClientToScreen(_hwnd, ref oldClientRectOrigin);
-                oldClientRect.Offset(oldClientRectOrigin);
 
-                var newRect = oldClientRect;
-
-                if (newProperties.Decorations == SystemDecorations.Full)
+                if (_shown || forceChanges)
                 {
-                    AdjustWindowRectEx(ref newRect, (uint)style, false, (uint)GetExtendedStyle());
-                }
+                    GetClientRect(_hwnd, out var oldClientRect);
+                    var oldClientRectOrigin = new POINT();
+                    ClientToScreen(_hwnd, ref oldClientRectOrigin);
+                    oldClientRect.Offset(oldClientRectOrigin);
+
+                    var newRect = oldClientRect;
 
-                SetWindowPos(_hwnd, IntPtr.Zero, newRect.left, newRect.top, newRect.Width, newRect.Height,
-                    SetWindowPosFlags.SWP_NOZORDER | SetWindowPosFlags.SWP_NOACTIVATE |
-                    SetWindowPosFlags.SWP_FRAMECHANGED);
+                    if (newProperties.Decorations == SystemDecorations.Full)
+                    {
+                        AdjustWindowRectEx(ref newRect, (uint)style, false, (uint)GetExtendedStyle());
+                    }
+
+                    SetWindowPos(_hwnd, IntPtr.Zero, newRect.left, newRect.top, newRect.Width, newRect.Height,
+                        SetWindowPosFlags.SWP_NOZORDER | SetWindowPosFlags.SWP_NOACTIVATE |
+                        SetWindowPosFlags.SWP_FRAMECHANGED);
+                }
             }
 
             // Ensure window state if decorations change