From 6c623afc91be81c9ec42fc7151b6ada230352a72 Mon Sep 17 00:00:00 2001
From: Quantum <quantum2048@gmail.com>
Date: Sat, 18 Jul 2026 14:36:08 -0400
Subject: [PATCH] [idd] helper: add setting for exclusive monitor (default:
 yes)

---
 idd/LGIddHelper/CRegistrySettings.cpp | 23 +++++++++++++++++++++++
 idd/LGIddHelper/CRegistrySettings.h   |  3 +++
 2 files changed, 26 insertions(+)

diff --git a/idd/LGIddHelper/CRegistrySettings.cpp b/idd/LGIddHelper/CRegistrySettings.cpp
index bab9400c..76396d7e 100644
--- a/idd/LGIddHelper/CRegistrySettings.cpp
+++ b/idd/LGIddHelper/CRegistrySettings.cpp
@@ -209,3 +209,26 @@ LSTATUS CRegistrySettings::setNoGPU(bool noGPU)
   DWORD dwValue = noGPU;
   return RegSetValueEx(hKey, L"NoGPU", 0, REG_DWORD, (LPBYTE)&dwValue, sizeof(DWORD));
 }
+
+std::optional<bool> CRegistrySettings::getExclusiveMonitor()
+{
+  DWORD result, cbData = sizeof result;
+
+  LSTATUS status = RegGetValue(hKey, nullptr, L"ExclusiveMonitor", RRF_RT_REG_DWORD, nullptr, &result, &cbData);
+  switch (status)
+  {
+  case ERROR_SUCCESS:
+    return !!result;
+  case ERROR_FILE_NOT_FOUND:
+    return true;
+  default:
+    DEBUG_ERROR_HR(status, "RegGetValue(ExclusiveMonitor)");
+    return {};
+  }
+}
+
+LSTATUS CRegistrySettings::setExclusiveMonitor(bool exclusive)
+{
+  DWORD dwValue = exclusive;
+  return RegSetValueEx(hKey, L"ExclusiveMonitor", 0, REG_DWORD, (LPBYTE)&dwValue, sizeof(DWORD));
+}
diff --git a/idd/LGIddHelper/CRegistrySettings.h b/idd/LGIddHelper/CRegistrySettings.h
index 8a330054..15414986 100644
--- a/idd/LGIddHelper/CRegistrySettings.h
+++ b/idd/LGIddHelper/CRegistrySettings.h
@@ -53,4 +53,7 @@ public:
 
   std::optional<bool> getNoGPU();
   LSTATUS setNoGPU(bool noGPU);
+
+  std::optional<bool> getExclusiveMonitor();
+  LSTATUS setExclusiveMonitor(bool exclusive);
 };