From 992b2ec476a34e6f71220ad103b45b107f20f370 Mon Sep 17 00:00:00 2001
From: =?utf8?q?V=C3=A1clav=20Slav=C3=ADk?= <vslavik@fastmail.fm>
Date: Fri, 8 Oct 2004 21:52:52 +0000
Subject: [PATCH] propagate invalidated best size upstream

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29740 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/window.h   |  2 +-
 src/common/wincmn.cpp | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/include/wx/window.h b/include/wx/window.h
index 1b88bc156c..7a20ca1615 100644
--- a/include/wx/window.h
+++ b/include/wx/window.h
@@ -317,7 +317,7 @@ public:
 
         // reset the cached best size value so it will be recalculated the
         // next time it is needed.
-    void InvalidateBestSize() { m_bestSizeCache = wxDefaultSize; }
+    void InvalidateBestSize();
     void CacheBestSize(const wxSize& size) const
         { wxConstCast(this, wxWindowBase)->m_bestSizeCache = size; }
 
diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 784b618111..c15d4f4da9 100644
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -530,6 +530,16 @@ static bool wxHasRealChildren(const wxWindowBase* win)
     return (realChildCount > 0);
 }
 #endif
+    
+void wxWindowBase::InvalidateBestSize()
+{
+    m_bestSizeCache = wxDefaultSize;
+
+    // parent's best size calculation may depend on its children's
+    // best sizes, so let's invalidate it as well to be safe:
+    if (m_parent)
+        m_parent->InvalidateBestSize();
+}
 
 // return the size best suited for the current window
 wxSize wxWindowBase::DoGetBestSize() const
-- 
2.45.2