fix for crash when trying to reconnect a off device when resuming.

DirectXPage.xaml.cpp

@@ -596,7 +596,7 @@ void DirectXPage::TogglePaneButton_UnChecked(Platform::Object^ sender, Windows::
 
 void DirectXPage::TogglePaneButton_Checked(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e)
 {
-	m_main->emulator->HidInput->UnregisterFromInputReportEvent();
+	m_main->emulator->HidInput->StopListening();
 
 	//pause emulator
 	m_main->emulator->Pause();

Emulator.cpp

@@ -326,8 +326,10 @@ namespace VBA10
 		if (xboxElapsed < 3600.0f)
 		{
 			this->p1Controller->Update();
-			this->HidInput->Update();
+			this->HidInput->Update(true);
 		}
+		else
+			this->HidInput->Update(false);
 #endif
 		this->virtualInput->Update();
 

EventHandlerForDevice.cpp

@@ -90,8 +90,14 @@ IAsyncOperation<bool>^ EventHandlerForDevice::OpenDeviceAsync(Enumeration::Devic
 			//String^ notificationMessage = nullptr;
 
 			// This may throw an exception or return null if we could not open the device
-			device = deviceTask.get();
-
+			try
+			{
+				device = deviceTask.get();
+			}
+			catch (Platform::Exception^)
+			{
+				device = nullptr;
+			}
 			// Device could have been blocked by user or the device has already been opened by another app.
 			if (device != nullptr)
 			{

HIDControllerInput.cpp

@@ -58,6 +58,9 @@ namespace VBA10
 			// a stale token. Ideally, one should remove the event token (e.g. assign to null) upon the device removal to avoid using it again.
 			registeredDevice = EventHandlerForDevice::Current->Device;
 
+			if (registeredDevice == nullptr)
+				return;
+
 			// Save event registration token so we can unregisted for events
 			inputReportEventToken = registeredDevice->InputReportReceived +=
 				ref new TypedEventHandler<HidDevice^, HidInputReportReceivedEventArgs^>(this, &HIDControllerInput::OnInputReportEvent);
@@ -68,6 +71,9 @@ namespace VBA10
 
 	void HIDControllerInput::UnregisterFromInputReportEvent(void)
 	{
+		if (registeredDevice == nullptr)
+			return;
+
 		if (isRegisteredForInputReportEvents)
 		{
 			// Don't unregister event token if the device was removed and reconnected because registration token is no longer valid
@@ -109,6 +115,8 @@ namespace VBA10
 		this->state.UpPressed = false;
 		this->state.DownPressed = false;
 
+		if (this->shouldUpdate == false)
+			return;
 
 		//check buttons
 		auto bcontrols = inputReport->ActivatedBooleanControls;
@@ -163,9 +171,9 @@ namespace VBA10
 
 	}
 
-	void HIDControllerInput::Update()
+	void HIDControllerInput::Update(bool shouldUpdate)
 	{
-
+		this->shouldUpdate = shouldUpdate;
 	}
 
 

HIDControllerInput.h

@@ -29,7 +29,7 @@ namespace VBA10
 
 	internal:
 		const ControllerState* GetControllerState(void);
-		void Update();
+		void Update(bool shouldUpdate);
 
 		void StartListening();  //start listening to report event
 		void StopListening();
@@ -47,6 +47,7 @@ namespace VBA10
 
 	private:
 		ControllerState state;
+		bool shouldUpdate;
 
 		Windows::Foundation::EventRegistrationToken inputReportEventToken;
 		bool isRegisteredForInputReportEvents;