From b54082a568707cd0328825792a49f3459422ca07 Mon Sep 17 00:00:00 2001
From: Nick Bolton <nick@synergy-project.org>
Date: Tue, 28 Jan 2014 15:59:10 +0000
Subject: [PATCH] ignored synwinxt.dll when it already exists, seems to be
 extremely difficult to replace dll's loaded into explorer (restarting
 explorer from nsis didnt work).

---
 res/synergy.nsh | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/res/synergy.nsh b/res/synergy.nsh
index f529ec9f..3d0c2962 100644
--- a/res/synergy.nsh
+++ b/res/synergy.nsh
@@ -35,6 +35,7 @@
 
 !include "MUI2.nsh"
 !include "DefineIfExist.nsh"
+!include "Library.nsh"
 
 !insertmacro MUI_PAGE_LICENSE "..\\res\\License.rtf"
 
@@ -163,7 +164,6 @@ Section "Server and Client" core
   File "${binDir}\Release\synergys.exe"
   File "${binDir}\Release\synergyc.exe"
   File "${binDir}\Release\synergyd.exe"
-  File "${binDir}\Release\synwinxt.dll"
   
   ; if the hook file exists, skip, assuming it couldn't be deleted
   ; because it was in use by some process.
@@ -173,6 +173,14 @@ Section "Server and Client" core
     File "${binDir}\Release\synwinhk.dll"
   ${EndIf}
   
+  ; if the shell ex file exists, skip, assuming it couldn't be deleted
+  ; because it was in use by some process.
+  ${If} ${FileExists} "synwinxt.dll"
+    DetailPrint "Skipping synwinxt.dll, file already exists."
+  ${Else}
+    File "${binDir}\Release\synwinxt.dll"
+  ${EndIf}
+  
   ; windows firewall exception
   DetailPrint "Adding firewall exception"
   nsExec::ExecToStack "netsh firewall add allowedprogram $\"$INSTDIR\synergys.exe$\" Synergy ENABLE"