From d255dc6706c28862b5f67148bace2d4cc0388b0f Mon Sep 17 00:00:00 2001
From: Troels Knakkergaard <troelsk@trac.wxwidgets.org>
Date: Mon, 25 Apr 2016 12:08:28 +0200
Subject: [PATCH] Do not set wxUnknownControlContainer background to a fixed
 color

Don't explicitly set the background colour if it's not specified.

Closes #17675.
---
 src/xrc/xh_unkwn.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/xrc/xh_unkwn.cpp b/src/xrc/xh_unkwn.cpp
index ee398ec8dd..83b1471700 100644
--- a/src/xrc/xh_unkwn.cpp
+++ b/src/xrc/xh_unkwn.cpp
@@ -41,7 +41,7 @@ public:
           m_controlName(controlName),
           m_control(NULL)
     {
-        m_bg = GetBackgroundColour();
+        m_bg = UseBgCol() ? GetBackgroundColour() : wxColour();
         SetBackgroundColour(wxColour(255, 0, 255));
     }