From 5206a9089787186138bbc272f139cdf801b3874a Mon Sep 17 00:00:00 2001
From: Christoph von Wittich <christoph_vw@reactos.org>
Date: Wed, 24 Jun 2009 19:53:54 +0000
Subject: [PATCH] stub NtSetThreadExecutionState needed by PowerPoint Viewer
 2003

svn path=/trunk/; revision=41599
---
 reactos/ntoskrnl/po/power.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/po/power.c b/reactos/ntoskrnl/po/power.c
index 98768e34a52..6701ce2d9db 100644
--- a/reactos/ntoskrnl/po/power.c
+++ b/reactos/ntoskrnl/po/power.c
@@ -588,6 +588,16 @@ NTAPI
 NtSetThreadExecutionState(IN EXECUTION_STATE esFlags,
                           OUT EXECUTION_STATE *PreviousFlags)
 {
+    static EXECUTION_STATE current =
+        ES_SYSTEM_REQUIRED | ES_DISPLAY_REQUIRED | ES_USER_PRESENT;
+    EXECUTION_STATE old = current;
+
     UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
+
+    if (!(current & ES_CONTINUOUS) || (esFlags & ES_CONTINUOUS))
+        current = esFlags;
+    
+    *PreviousFlags = old;
+
+    return STATUS_SUCCESS;
 }