diff --git a/GpApp/About.h b/GpApp/About.h
index a90709e..03387d1 100644
--- a/GpApp/About.h
+++ b/GpApp/About.h
@@ -6,5 +6,5 @@
 
 
 void DoAbout (void);
-
+void DoAboutFramework (void);
 
diff --git a/PortabilityLayer/WindowManager.cpp b/PortabilityLayer/WindowManager.cpp
index 2b7f512..cadde4e 100644
--- a/PortabilityLayer/WindowManager.cpp
+++ b/PortabilityLayer/WindowManager.cpp
@@ -186,6 +186,7 @@ namespace PortabilityLayer
 		void SetWindowTitle(Window *window, const PLPasStr &title) override;
 		Rect2i GetWindowFullRect(Window *window) const override;
 		bool GetWindowChromeInteractionZone(Window *window, const Vec2i &point, RegionID_t &outRegion) const override;
+		bool IsExclusiveWindowVisible() override;
 		void SwapExclusiveWindow(Window *& windowRef) override;
 
 		void FlickerWindowIn(Window *window, int32_t velocity) GP_ASYNCIFY_PARANOID_OVERRIDE;
@@ -1322,6 +1323,10 @@ namespace PortabilityLayer
 		return static_cast<WindowImpl*>(window)->GetChromeInteractionZone(point, outRegion);
 	}
 
+	bool WindowManagerImpl::IsExclusiveWindowVisible() {
+		return m_exclusiveWindow != nullptr;
+	}
+
 	void WindowManagerImpl::SwapExclusiveWindow(Window *& windowRef)
 	{
 		const bool hadExclusiveWindow = (m_exclusiveWindow != nullptr);
diff --git a/PortabilityLayer/WindowManager.h b/PortabilityLayer/WindowManager.h
index a17483e..613350a 100644
--- a/PortabilityLayer/WindowManager.h
+++ b/PortabilityLayer/WindowManager.h
@@ -38,6 +38,7 @@ namespace PortabilityLayer
 		virtual void SetWindowTitle(Window *window, const PLPasStr &title) = 0;
 		virtual Rect2i GetWindowFullRect(Window *window) const = 0;
 		virtual bool GetWindowChromeInteractionZone(Window *window, const Vec2i &point, RegionID_t &outRegion) const = 0;
+		virtual bool IsExclusiveWindowVisible() = 0;
 		virtual void SwapExclusiveWindow(Window *& windowRef) = 0;
 
 		GP_ASYNCIFY_PARANOID_VIRTUAL void FlickerWindowIn(Window *window, int32_t velocity) GP_ASYNCIFY_PARANOID_PURE;