From dd8f98b56dce63a8ce32f695db292e95d364e6d2 Mon Sep 17 00:00:00 2001
From: npwoods <npwoods@mess.org>
Date: Sun, 22 Dec 2019 18:04:03 -0500
Subject: [PATCH] Changed Direct3D renderer to call GetAncestor() in
 device_create() to get the root window

This is to make -attach_window work with non-root windows
---
 src/osd/modules/render/drawd3d.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/osd/modules/render/drawd3d.cpp b/src/osd/modules/render/drawd3d.cpp
index 140315620d9..ee6eca3eec9 100644
--- a/src/osd/modules/render/drawd3d.cpp
+++ b/src/osd/modules/render/drawd3d.cpp
@@ -801,8 +801,12 @@ void renderer_d3d9::update_gamma_ramp()
 //  device_create
 //============================================================
 
-int renderer_d3d9::device_create(HWND device_hwnd)
+int renderer_d3d9::device_create(HWND hwnd)
 {
+	// identify the actual window; this is needed so that -attach_window
+	// can work on a non-root HWND
+	HWND device_hwnd = GetAncestor(hwnd, GA_ROOT);
+
 	// if a device exists, free it
 	if (m_device != nullptr)
 	{