From 87f19ee3797ea5db154d5f7339ac352dc81848b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Banaan=20Ananas?=
 <happppp@users.noreply.github.com>
Date: Mon, 16 Dec 2013 16:08:45 +0000
Subject: [PATCH] Windows: Fixed D3D multimonitor support. [GroovyMAME]

---
 src/osd/windows/drawd3d.c | 2 +-
 src/osd/windows/window.c  | 3 +++
 src/osd/windows/window.h  | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/osd/windows/drawd3d.c b/src/osd/windows/drawd3d.c
index 251c772e274..1449f1c5d5d 100644
--- a/src/osd/windows/drawd3d.c
+++ b/src/osd/windows/drawd3d.c
@@ -903,7 +903,7 @@ try_again:
 													D3DPRESENT_INTERVAL_ONE : D3DPRESENT_INTERVAL_IMMEDIATE;
 
 	// create the D3D device
-	result = (*d3dintf->d3d.create_device)(d3dintf, m_adapter, D3DDEVTYPE_HAL, m_window->hwnd,
+	result = (*d3dintf->d3d.create_device)(d3dintf, m_adapter, D3DDEVTYPE_HAL, m_window->focus_hwnd,
 					D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_FPU_PRESERVE, &m_presentation, &m_device);
 	if (result != D3D_OK)
 	{
diff --git a/src/osd/windows/window.c b/src/osd/windows/window.c
index 285ebe8d14f..d89c15d98da 100644
--- a/src/osd/windows/window.c
+++ b/src/osd/windows/window.c
@@ -1178,6 +1178,9 @@ static int complete_create(win_window_info *window)
 	if (window->hwnd == NULL)
 		return 1;
 
+	// set window #0 as the focus window for all windows, required for D3D & multimonitor
+	window->focus_hwnd = win_window_list->hwnd;
+
 	// set a pointer back to us
 	SetWindowLongPtr(window->hwnd, GWLP_USERDATA, (LONG_PTR)window);
 
diff --git a/src/osd/windows/window.h b/src/osd/windows/window.h
index 9784fd643de..b5bf3f3e52a 100644
--- a/src/osd/windows/window.h
+++ b/src/osd/windows/window.h
@@ -45,6 +45,7 @@ public:
 
 	// window handle and info
 	HWND                hwnd;
+	HWND                focus_hwnd;
 	char                title[256];
 	RECT                non_fullscreen_bounds;
 	int                 startmaximized;