From 355ba94fa7c34b3f85ca4015cde8992c6dbe09f6 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Fri, 24 Jun 2022 16:53:58 +0200
Subject: [PATCH] Don't return FrameSize until window is shown.

Since #8629, the content size isn't set until the window is shown, so we can't know the frame size.
---
 native/Avalonia.Native/src/OSX/WindowBaseImpl.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm b/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
index f133fa34f6..45d78b3926 100644
--- a/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
+++ b/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
@@ -224,7 +224,7 @@ HRESULT WindowBaseImpl::GetFrameSize(AvnSize *ret) {
         if (ret == nullptr)
             return E_POINTER;
 
-        if(Window != nullptr){
+        if(Window != nullptr && _shown){
             auto frame = [Window frame];
             ret->Width = frame.size.width;
             ret->Height = frame.size.height;