From f1e2788dc6fa7393ba1355c6d0985de323c68f09 Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Wed, 8 Apr 2009 23:15:35 +0000
Subject: [PATCH] IntChangeDisplaySettings: Save refresh frequency in the
 registry. Now it's possible to change display settings when using the VBox
 display driver.

svn path=/trunk/; revision=40425
---
 reactos/subsystems/win32/win32k/objects/device.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/reactos/subsystems/win32/win32k/objects/device.c b/reactos/subsystems/win32/win32k/objects/device.c
index d7c9cea4847..c218af58ba1 100644
--- a/reactos/subsystems/win32/win32k/objects/device.c
+++ b/reactos/subsystems/win32/win32k/objects/device.c
@@ -1369,6 +1369,13 @@ IntChangeDisplaySettings(
             Status = ZwSetValueKey(DevInstRegKey, &RegistryKey, 0, REG_DWORD, &NewValue, sizeof(NewValue));
         }
 
+        if (NT_SUCCESS(Status) && DevMode->dmFields & DM_DISPLAYFREQUENCY)
+        {
+            RtlInitUnicodeString(&RegistryKey, L"DefaultSettings.VRefresh");
+            NewValue = DevMode->dmDisplayFrequency;
+            Status = ZwSetValueKey(DevInstRegKey, &RegistryKey, 0, REG_DWORD, &NewValue, sizeof(NewValue));
+        }
+
         ZwClose(DevInstRegKey);
         if (NT_SUCCESS(Status))
             Ret = DISP_CHANGE_RESTART;