From a6c7682c84c444931b2253dd3eb843349b13f1aa Mon Sep 17 00:00:00 2001
From: Dan Ballard <dan@mindstab.net>
Date: Wed, 20 Apr 2022 14:25:36 -0700
Subject: [PATCH] nsis windows installer detect running, ask to not, abort

---
 windows/nsis/cwtch-installer.nsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/windows/nsis/cwtch-installer.nsi b/windows/nsis/cwtch-installer.nsi
index d0288de3..a2406028 100644
--- a/windows/nsis/cwtch-installer.nsi
+++ b/windows/nsis/cwtch-installer.nsi
@@ -45,6 +45,17 @@ InstallDirRegKey HKCU "Software\Cwtch" "installLocation"
 
 ShowInstDetails show
 
+; Init / make sure isn't running
+; https://nsis.sourceforge.io/Check_whether_your_application_is_running
+
+Function .onInit
+FindProcDLL::FindProc "Cwtch.exe"
+StrCmp $R0 "1" found not_found
+found:
+  MessageBox MB_ICONEXCLAMATION|MB_OK "Cwtch is still running, please exit it before running installer"  /SD IDOK
+  Abort
+not_found:
+
 ; Pages --------