From 587af2c855feaad2a6a43b3ce57fc24de6be0bc9 Mon Sep 17 00:00:00 2001
From: narzoul <narzoul@users.noreply.github.com>
Date: Sun, 30 Dec 2018 13:07:55 +0100
Subject: [PATCH] Fixed incorrect DC used for opening GDI adapter

---
 DDrawCompat/D3dDdi/KernelModeThunks.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/DDrawCompat/D3dDdi/KernelModeThunks.cpp b/DDrawCompat/D3dDdi/KernelModeThunks.cpp
index b998858..4b335e8 100644
--- a/DDrawCompat/D3dDdi/KernelModeThunks.cpp
+++ b/DDrawCompat/D3dDdi/KernelModeThunks.cpp
@@ -245,13 +245,17 @@ namespace
 				g_gdiAdapterInfo = {};
 			}
 
+			MONITORINFOEX mi = {};
+			mi.cbSize = sizeof(mi);
+			GetMonitorInfo(MonitorFromPoint({}, MONITOR_DEFAULTTOPRIMARY), &mi);
+
 			D3DKMT_OPENADAPTERFROMHDC data = {};
-			data.hDc = GetDC(nullptr);
+			data.hDc = CreateDC(mi.szDevice, mi.szDevice, nullptr, nullptr);
 			if (SUCCEEDED(CALL_ORIG_FUNC(D3DKMTOpenAdapterFromHdc)(&data)))
 			{
 				g_gdiAdapterInfo = getAdapterInfo(data);
 			}
-			CALL_ORIG_FUNC(ReleaseDC)(nullptr, data.hDc);
+			DeleteDC(data.hDc);
 
 			lastDisplaySettingsUniqueness = currentDisplaySettingsUniqueness;
 		}