WinRT: fixed bug where Win10 GameBar, when shown + hidden, might not restore a cursor's hidden state
authorDavid Ludwig <dludwig@pobox.com>
Sat, 20 Aug 2016 13:46:45 -0400
changeset 10277 29d7289e9055
parent 10276 1448f9484494
child 10278 74c39dbe8d30
WinRT: fixed bug where Win10 GameBar, when shown + hidden, might not restore a cursor's hidden state

The repro steps were this:
1. run an sdl2 winrt/uwp app, on Win10, v10.0.10586.0 or higher
2. hide the cursor, via a call to SDL_ShowCursor(0)
3. make the Win10 game bar appear, by pressing the Windows + G hotkey
4. observe that the mouse cursor appears, in order to interact with the
game bar (this is expected behavior)
5. make the Win10 game bar disappear, either by pressing the Windows + G hotkey
again, or clicking somewhere in the app

EXPECTED RESULT: cursor disappears, as game bar disappears

ACTUAL RESULT: cursor didn't always disappear
VisualC-WinRT/UWP_VS2015/SDL-UWP.vcxproj
VisualC-WinRT/UWP_VS2015/SDL-UWP.vcxproj.filters
VisualC-WinRT/WinPhone80_VS2012/SDL-WinPhone80.vcxproj
VisualC-WinRT/WinPhone80_VS2012/SDL-WinPhone80.vcxproj.filters
VisualC-WinRT/WinPhone81_VS2013/SDL-WinPhone81.vcxproj
VisualC-WinRT/WinPhone81_VS2013/SDL-WinPhone81.vcxproj.filters
VisualC-WinRT/WinRT80_VS2012/SDL-WinRT80.vcxproj
VisualC-WinRT/WinRT80_VS2012/SDL-WinRT80.vcxproj.filters
VisualC-WinRT/WinRT81_VS2013/SDL-WinRT81.vcxproj
VisualC-WinRT/WinRT81_VS2013/SDL-WinRT81.vcxproj.filters
src/video/winrt/SDL_winrtgamebar.cpp
src/video/winrt/SDL_winrtgamebar_cpp.h
src/video/winrt/SDL_winrtvideo.cpp
src/video/winrt/SDL_winrtvideo_cpp.h
--- a/VisualC-WinRT/UWP_VS2015/SDL-UWP.vcxproj	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/UWP_VS2015/SDL-UWP.vcxproj	Sat Aug 20 13:46:45 2016 -0400
@@ -156,6 +156,7 @@
     <ClInclude Include="..\..\src\video\SDL_shape_internals.h" />
     <ClInclude Include="..\..\src\video\SDL_sysvideo.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtevents_c.h" />
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmessagebox.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmouse_c.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtopengles.h" />
@@ -311,6 +312,14 @@
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</CompileAsWinRT>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</CompileAsWinRT>
+    </ClCompile>
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtkeyboard.cpp">
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
--- a/VisualC-WinRT/UWP_VS2015/SDL-UWP.vcxproj.filters	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/UWP_VS2015/SDL-UWP.vcxproj.filters	Sat Aug 20 13:46:45 2016 -0400
@@ -402,6 +402,9 @@
     <ClInclude Include="..\..\src\audio\xaudio2\SDL_xaudio2.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\atomic\SDL_atomic.c">
@@ -716,5 +719,8 @@
     <ClCompile Include="..\..\src\audio\xaudio2\SDL_xaudio2.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
--- a/VisualC-WinRT/WinPhone80_VS2012/SDL-WinPhone80.vcxproj	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/WinPhone80_VS2012/SDL-WinPhone80.vcxproj	Sat Aug 20 13:46:45 2016 -0400
@@ -273,6 +273,7 @@
     <ClInclude Include="..\..\src\video\SDL_shape_internals.h" />
     <ClInclude Include="..\..\src\video\SDL_sysvideo.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtevents_c.h" />
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmessagebox.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmouse_c.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtopengles.h" />
@@ -408,6 +409,12 @@
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</CompileAsWinRT>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
+    </ClCompile>
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtkeyboard.cpp">
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
--- a/VisualC-WinRT/WinPhone80_VS2012/SDL-WinPhone80.vcxproj.filters	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/WinPhone80_VS2012/SDL-WinPhone80.vcxproj.filters	Sat Aug 20 13:46:45 2016 -0400
@@ -372,6 +372,9 @@
     <ClInclude Include="..\..\src\video\SDL_egl_c.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\atomic\SDL_atomic.c">
@@ -674,5 +677,8 @@
     <ClCompile Include="..\..\src\video\SDL_egl.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
--- a/VisualC-WinRT/WinPhone81_VS2013/SDL-WinPhone81.vcxproj	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/WinPhone81_VS2013/SDL-WinPhone81.vcxproj	Sat Aug 20 13:46:45 2016 -0400
@@ -139,6 +139,7 @@
     <ClInclude Include="..\..\src\video\SDL_shape_internals.h" />
     <ClInclude Include="..\..\src\video\SDL_sysvideo.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtevents_c.h" />
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmessagebox.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmouse_c.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtopengles.h" />
@@ -275,6 +276,12 @@
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
+    </ClCompile>
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtkeyboard.cpp">
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
--- a/VisualC-WinRT/WinPhone81_VS2013/SDL-WinPhone81.vcxproj.filters	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/WinPhone81_VS2013/SDL-WinPhone81.vcxproj.filters	Sat Aug 20 13:46:45 2016 -0400
@@ -381,6 +381,9 @@
     <ClInclude Include="..\..\src\thread\windows\SDL_systhread_c.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\atomic\SDL_atomic.c">
@@ -686,5 +689,8 @@
     <ClCompile Include="..\..\src\thread\generic\SDL_syscond.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
--- a/VisualC-WinRT/WinRT80_VS2012/SDL-WinRT80.vcxproj	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/WinRT80_VS2012/SDL-WinRT80.vcxproj	Sat Aug 20 13:46:45 2016 -0400
@@ -175,6 +175,14 @@
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</CompileAsWinRT>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</CompileAsWinRT>
+    </ClCompile>
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtkeyboard.cpp">
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
@@ -353,6 +361,7 @@
     <ClInclude Include="..\..\src\video\SDL_shape_internals.h" />
     <ClInclude Include="..\..\src\video\SDL_sysvideo.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtevents_c.h" />
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmessagebox.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmouse_c.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtopengles.h" />
--- a/VisualC-WinRT/WinRT80_VS2012/SDL-WinRT80.vcxproj.filters	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/WinRT80_VS2012/SDL-WinRT80.vcxproj.filters	Sat Aug 20 13:46:45 2016 -0400
@@ -316,6 +316,9 @@
     <ClCompile Include="..\..\src\haptic\windows\SDL_windowshaptic.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\include\begin_code.h">
@@ -714,6 +717,9 @@
     <ClInclude Include="..\..\src\haptic\windows\SDL_xinputhaptic_c.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="Header Files">
--- a/VisualC-WinRT/WinRT81_VS2013/SDL-WinRT81.vcxproj	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/WinRT81_VS2013/SDL-WinRT81.vcxproj	Sat Aug 20 13:46:45 2016 -0400
@@ -153,6 +153,7 @@
     <ClInclude Include="..\..\src\video\SDL_shape_internals.h" />
     <ClInclude Include="..\..\src\video\SDL_sysvideo.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtevents_c.h" />
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmessagebox.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtmouse_c.h" />
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtopengles.h" />
@@ -309,6 +310,14 @@
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</CompileAsWinRT>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</CompileAsWinRT>
+      <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</CompileAsWinRT>
+    </ClCompile>
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtkeyboard.cpp">
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</CompileAsWinRT>
       <CompileAsWinRT Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</CompileAsWinRT>
--- a/VisualC-WinRT/WinRT81_VS2013/SDL-WinRT81.vcxproj.filters	Wed Aug 17 21:05:00 2016 +0200
+++ b/VisualC-WinRT/WinRT81_VS2013/SDL-WinRT81.vcxproj.filters	Sat Aug 20 13:46:45 2016 -0400
@@ -393,6 +393,9 @@
     <ClInclude Include="..\..\src\thread\windows\SDL_systhread_c.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\atomic\SDL_atomic.c">
@@ -710,5 +713,8 @@
     <ClCompile Include="..\..\src\thread\windows\SDL_syssem.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/winrt/SDL_winrtgamebar.cpp	Sat Aug 20 13:46:45 2016 -0400
@@ -0,0 +1,196 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WINRT
+
+/* Windows includes */
+#include <roapi.h>
+#include <windows.foundation.h>
+#include <EventToken.h>
+
+
+/* SDL includes */
+extern "C" {
+#include "SDL_mouse.h"
+#include "../SDL_sysvideo.h"
+}
+#include "SDL_winrtvideo_cpp.h"
+
+
+/* Game Bar events can come in off the main thread.  Use the following
+   WinRT CoreDispatcher to deal with them on SDL's thread.
+*/
+static Platform::WeakReference WINRT_MainThreadDispatcher;
+
+
+/* Win10's initial SDK (the 10.0.10240.0 release) does not include references
+   to Game Bar APIs, as the Game Bar was released via Win10 10.0.10586.0.
+
+   Declare its WinRT/COM interface here, to allow compilation with earlier
+   Windows SDKs.
+*/
+MIDL_INTERFACE("1DB9A292-CC78-4173-BE45-B61E67283EA7")
+IGameBarStatics_ : public IInspectable
+{
+public:
+    virtual HRESULT STDMETHODCALLTYPE add_VisibilityChanged( 
+        __FIEventHandler_1_IInspectable *handler,
+        Windows::Foundation::EventRegistrationToken *token) = 0;
+    
+    virtual HRESULT STDMETHODCALLTYPE remove_VisibilityChanged( 
+        Windows::Foundation::EventRegistrationToken token) = 0;
+    
+    virtual HRESULT STDMETHODCALLTYPE add_IsInputRedirectedChanged( 
+        __FIEventHandler_1_IInspectable *handler,
+        Windows::Foundation::EventRegistrationToken *token) = 0;
+    
+    virtual HRESULT STDMETHODCALLTYPE remove_IsInputRedirectedChanged( 
+        Windows::Foundation::EventRegistrationToken token) = 0;
+    
+    virtual HRESULT STDMETHODCALLTYPE get_Visible( 
+        boolean *value) = 0;
+    
+    virtual HRESULT STDMETHODCALLTYPE get_IsInputRedirected( 
+        boolean *value) = 0;
+};
+
+/* Declare the game bar's COM GUID */
+static GUID IID_IGameBarStatics_ = { MAKELONG(0xA292, 0x1DB9), 0xCC78, 0x4173, { 0xBE, 0x45, 0xB6, 0x1E, 0x67, 0x28, 0x3E, 0xA7 } };
+
+/* Retrieves a pointer to the game bar, or NULL if it is not available.
+   If a pointer is returned, it's ->Release() method must be called
+   after the caller has finished using it.
+*/
+static IGameBarStatics_ *
+WINRT_GetGameBar()
+{
+    wchar_t *wClassName = L"Windows.Gaming.UI.GameBar";
+    HSTRING hClassName;
+    IActivationFactory *pActivationFactory = NULL;
+    IGameBarStatics_ *pGameBar = NULL;
+    HRESULT hr;
+
+    hr = ::WindowsCreateString(wClassName, (UINT32)wcslen(wClassName), &hClassName);
+    if (FAILED(hr)) {
+        goto done;
+    }
+
+    hr = Windows::Foundation::GetActivationFactory(hClassName, &pActivationFactory);
+    if (FAILED(hr)) {
+        goto done;
+    }
+
+    pActivationFactory->QueryInterface(IID_IGameBarStatics_, (void **) &pGameBar);
+
+done:
+    if (pActivationFactory) {
+        pActivationFactory->Release();
+    }
+    if (hClassName) {
+        ::WindowsDeleteString(hClassName);
+    }
+    return pGameBar;
+}
+
+static void
+WINRT_HandleGameBarIsInputRedirected_MainThread()
+{
+    IGameBarStatics_ *gameBar;
+    boolean isInputRedirected = 0;
+    if (!WINRT_MainThreadDispatcher) {
+        /* The game bar event handler has been deregistered! */
+        return;
+    }
+    gameBar = WINRT_GetGameBar();
+    if (!gameBar) {
+        /* Shouldn't happen, but just in case... */
+        return;
+    }
+    if (SUCCEEDED(gameBar->get_IsInputRedirected(&isInputRedirected))) {
+        if ( ! isInputRedirected) {
+            /* Input-control is now back to the SDL app. Restore the cursor,
+               in case Windows does not (it does not in either Win10
+               10.0.10240.0 or 10.0.10586.0, maybe later version(s) too.
+            */
+            SDL_Cursor *cursor = SDL_GetCursor();
+            SDL_SetCursor(cursor);
+        }
+    }
+    gameBar->Release();
+}
+
+static void
+WINRT_HandleGameBarIsInputRedirected_NonMainThread(Platform::Object ^ o1, Platform::Object ^o2)
+{
+    Windows::UI::Core::CoreDispatcher ^dispatcher = WINRT_MainThreadDispatcher.Resolve<Windows::UI::Core::CoreDispatcher>();
+    if (dispatcher) {
+        dispatcher->RunAsync(
+            Windows::UI::Core::CoreDispatcherPriority::Normal,
+            ref new Windows::UI::Core::DispatchedHandler(&WINRT_HandleGameBarIsInputRedirected_MainThread));
+    }
+}
+
+void
+WINRT_InitGameBar(_THIS)
+{
+    SDL_VideoData *driverdata = (SDL_VideoData *)_this->driverdata;
+    IGameBarStatics_ *gameBar = WINRT_GetGameBar();
+    if (gameBar) {
+        /* GameBar.IsInputRedirected events can come in via something other than
+           the main/SDL thread.
+
+           Get a WinRT 'CoreDispatcher' that can be used to call back into the
+           SDL thread.
+        */
+        WINRT_MainThreadDispatcher = Windows::UI::Core::CoreWindow::GetForCurrentThread()->Dispatcher;
+        Windows::Foundation::EventHandler<Platform::Object ^> ^handler = \
+            ref new Windows::Foundation::EventHandler<Platform::Object ^>(&WINRT_HandleGameBarIsInputRedirected_NonMainThread);
+        __FIEventHandler_1_IInspectable * pHandler = reinterpret_cast<__FIEventHandler_1_IInspectable *>(handler);
+        gameBar->add_IsInputRedirectedChanged(pHandler, &driverdata->gameBarIsInputRedirectedToken);
+        gameBar->Release();
+    }
+}
+
+void
+WINRT_QuitGameBar(_THIS)
+{
+    SDL_VideoData *driverdata;
+    IGameBarStatics_ *gameBar;
+    if (!_this || !_this->driverdata) {
+        return;
+    }
+    gameBar = WINRT_GetGameBar();
+    if (!gameBar) {
+        return;
+    }
+    driverdata = (SDL_VideoData *)_this->driverdata;
+    if (driverdata->gameBarIsInputRedirectedToken.Value) {
+        gameBar->remove_IsInputRedirectedChanged(driverdata->gameBarIsInputRedirectedToken);
+        driverdata->gameBarIsInputRedirectedToken.Value = 0;
+    }
+    WINRT_MainThreadDispatcher = nullptr;
+    gameBar->Release();
+}
+
+#endif /* SDL_VIDEO_DRIVER_WINRT */
+
+/* vi: set ts=4 sw=4 expandtab: */
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/winrt/SDL_winrtgamebar_cpp.h	Sat Aug 20 13:46:45 2016 -0400
@@ -0,0 +1,35 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_config.h"
+
+#ifndef _SDL_winrtgamebar_h
+#define _SDL_winrtgamebar_h
+
+#ifdef __cplusplus
+/* These are exported as C++ functions, rather than C, to fix a compilation
+   bug with MSVC 2013, for Windows 8.x builds. */
+extern void WINRT_InitGameBar(_THIS);
+extern void WINRT_QuitGameBar(_THIS);
+#endif
+
+#endif /* _SDL_winrtmouse_h */
+
+/* vi: set ts=4 sw=4 expandtab: */
--- a/src/video/winrt/SDL_winrtvideo.cpp	Wed Aug 17 21:05:00 2016 +0200
+++ b/src/video/winrt/SDL_winrtvideo.cpp	Sat Aug 20 13:46:45 2016 -0400
@@ -61,6 +61,7 @@
 #include "../../core/winrt/SDL_winrtapp_xaml.h"
 #include "SDL_winrtvideo_cpp.h"
 #include "SDL_winrtevents_c.h"
+#include "SDL_winrtgamebar_cpp.h"
 #include "SDL_winrtmouse_c.h"
 #include "SDL_main.h"
 #include "SDL_system.h"
@@ -177,6 +178,7 @@
     }
     WINRT_InitMouse(_this);
     WINRT_InitTouch(_this);
+    WINRT_InitGameBar(_this);
 
     return 0;
 }
@@ -419,6 +421,7 @@
 void
 WINRT_VideoQuit(_THIS)
 {
+    WINRT_QuitGameBar(_this);
     WINRT_QuitMouse(_this);
 }
 
--- a/src/video/winrt/SDL_winrtvideo_cpp.h	Wed Aug 17 21:05:00 2016 +0200
+++ b/src/video/winrt/SDL_winrtvideo_cpp.h	Sat Aug 20 13:46:45 2016 -0400
@@ -46,6 +46,11 @@
      * passed to eglGetDisplay and eglCreateWindowSurface:
      */
     IUnknown *winrtEglWindow;
+
+    /* Event token(s), for unregistering WinRT event handler(s).
+       These are just a struct with a 64-bit integer inside them
+    */
+    Windows::Foundation::EventRegistrationToken gameBarIsInputRedirectedToken;
 } SDL_VideoData;
 
 /* The global, WinRT, SDL Window.