From 3d2fa9265410dcbc29e6d42a75f2ebf97ab24867 Mon Sep 17 00:00:00 2001
From: crs <cschoeneman@gmail.com>
Date: Thu, 29 Jul 2004 21:59:26 +0000
Subject: [PATCH] Fixed handling of ctrl and alt keys when using low level
 hooks. They were being discarded so the server wouldn't correctly send ctrl,
 alt, or AltGr to clients.

---
 lib/platform/CSynergyHook.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/platform/CSynergyHook.cpp b/lib/platform/CSynergyHook.cpp
index b7441ae2..10a36cbf 100644
--- a/lib/platform/CSynergyHook.cpp
+++ b/lib/platform/CSynergyHook.cpp
@@ -400,8 +400,13 @@ keyboardHookHandler(WPARAM wParam, LPARAM lParam)
 		case VK_LMENU:
 		case VK_RMENU:
 		case VK_HANGUL:
-			// discard the control and alt modifiers
-			return true;
+			// pass the control and alt modifiers if using a low
+			// level hook, discard them if not.
+			if (g_hookThread == 0) {
+				return true;
+			}
+			break;
+
 
 		default:
 			// discard