From b119ee87a55eb961034672abdc22c5c44ba203ea Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Fri, 13 Jun 2008 22:38:33 +0000
Subject: [PATCH] don't clear the list control when wxLC_[HV]RULES style is
 toggled (#4688)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@54201 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/generic/listctrl.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index 985fa5d7e9..8c40c96c48 100644
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -5088,7 +5088,17 @@ void wxGenericListCtrl::SetSingleStyle( long style, bool add )
     else
         flag &= ~style;
 
-    SetWindowStyleFlag( flag );
+    // some styles can be set without recreating everything (as happens in
+    // SetWindowStyleFlag() which calls wxListMainWindow::DeleteEverything())
+    if ( !(style & ~(wxLC_HRULES | wxLC_VRULES)) )
+    {
+        Refresh();
+        wxWindow::SetWindowStyleFlag(flag);
+    }
+    else
+    {
+        SetWindowStyleFlag( flag );
+    }
 }
 
 void wxGenericListCtrl::SetWindowStyleFlag( long flag )
-- 
2.45.2