From 8526e4807379ed35e3461da6793256af8c1ff6cf Mon Sep 17 00:00:00 2001
From: Pierre Ossman <ossman@cendio.se>
Date: Fri, 9 Nov 2018 17:14:57 +0100
Subject: [PATCH] Stop trying to send ListConnInfo via WM_COPYDATA

Windows tries to do a copy of it, and it is too complex to survive
that. Just reference the object directly as we know the source of
the message here.
---
 win/winvnc/ControlPanel.cxx | 4 ++--
 win/winvnc/STrayIcon.cxx    | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/win/winvnc/ControlPanel.cxx b/win/winvnc/ControlPanel.cxx
index e7262287..72831e55 100644
--- a/win/winvnc/ControlPanel.cxx
+++ b/win/winvnc/ControlPanel.cxx
@@ -140,6 +140,8 @@ void ControlPanel::SendCommand(DWORD command, int data)
 {
   COPYDATASTRUCT copyData;
   copyData.dwData = command;
+  copyData.cbData = 0;
+  copyData.lpData = 0;
   getSelConnInfo();
   if (data != -1) {
     ListConnStatus.Copy(&ListSelConn);
@@ -148,8 +150,6 @@ void ControlPanel::SendCommand(DWORD command, int data)
   } else {
     ListConnStatus.Clear();
   }
-  copyData.cbData = 0;
-  copyData.lpData = &ListConnStatus;
   SendMessage(m_hSTIcon, WM_COPYDATA, 0, (LPARAM)&copyData);
 }
 
diff --git a/win/winvnc/STrayIcon.cxx b/win/winvnc/STrayIcon.cxx
index fa483ee0..a90819d0 100644
--- a/win/winvnc/STrayIcon.cxx
+++ b/win/winvnc/STrayIcon.cxx
@@ -184,7 +184,7 @@ public:
         case 2:
           return thread.server.disconnectClients("IPC disconnect") ? 1 : 0;
         case 3:
-          thread.server.setClientsStatus((ListConnInfo *)command->lpData);
+          thread.server.setClientsStatus(&CPanel->ListConnStatus);
         case 4:
           thread.server.getClientsInfo(&LCInfo);
           CPanel->UpdateListView(&LCInfo);
-- 
2.39.5