twinapi.appcore: Succeed some EasClientDeviceInformation stub calls.

dlls/twinapi.appcore/client_device_information.c

@@ -96,31 +96,31 @@ static HRESULT WINAPI client_device_information_get_Id( IEasClientDeviceInformat
 static HRESULT WINAPI client_device_information_get_OperatingSystem( IEasClientDeviceInformation *iface, HSTRING *value )
 {
     FIXME( "iface %p, value %p stub.\n", iface, value );
-    return E_NOTIMPL;
+    return WindowsCreateString( NULL, 0, value );
 }
 
 static HRESULT WINAPI client_device_information_get_FriendlyName( IEasClientDeviceInformation *iface, HSTRING *value )
 {
     FIXME( "iface %p, value %p stub.\n", iface, value );
-    return E_NOTIMPL;
+    return WindowsCreateString( NULL, 0, value );
 }
 
 static HRESULT WINAPI client_device_information_get_SystemManufacturer( IEasClientDeviceInformation *iface, HSTRING *value )
 {
     FIXME( "iface %p, value %p stub.\n", iface, value );
-    return E_NOTIMPL;
+    return WindowsCreateString( NULL, 0, value );
 }
 
 static HRESULT WINAPI client_device_information_get_SystemProductName( IEasClientDeviceInformation *iface, HSTRING *value )
 {
     FIXME( "iface %p, value %p stub.\n", iface, value );
-    return E_NOTIMPL;
+    return WindowsCreateString( NULL, 0, value );
 }
 
 static HRESULT WINAPI client_device_information_get_SystemSku( IEasClientDeviceInformation *iface, HSTRING *value )
 {
     FIXME( "iface %p, value %p stub.\n", iface, value );
-    return E_NOTIMPL;
+    return WindowsCreateString( NULL, 0, value );
 }
 
 static IEasClientDeviceInformationVtbl client_device_information_vtbl =

dlls/twinapi.appcore/tests/twinapi.c

@@ -80,6 +80,26 @@ static void test_EasClientDeviceInformation(void)
     check_interface( client_device_information, &IID_IInspectable, TRUE );
     check_interface( client_device_information, &IID_IAgileObject, FALSE );
 
+    hr = IEasClientDeviceInformation_get_OperatingSystem( client_device_information, &str );
+    ok( hr == S_OK, "got hr %#lx\n", hr );
+    WindowsDeleteString( str );
+
+    hr = IEasClientDeviceInformation_get_FriendlyName( client_device_information, &str );
+    ok( hr == S_OK, "got hr %#lx\n", hr );
+    WindowsDeleteString( str );
+
+    hr = IEasClientDeviceInformation_get_SystemManufacturer( client_device_information, &str );
+    ok( hr == S_OK, "got hr %#lx\n", hr );
+    WindowsDeleteString( str );
+
+    hr = IEasClientDeviceInformation_get_SystemProductName( client_device_information, &str );
+    ok( hr == S_OK, "got hr %#lx\n", hr );
+    WindowsDeleteString( str );
+
+    hr = IEasClientDeviceInformation_get_SystemSku( client_device_information, &str );
+    ok( hr == S_OK, "got hr %#lx\n", hr );
+    WindowsDeleteString( str );
+
     ref = IEasClientDeviceInformation_Release( client_device_information );
     ok( ref == 0, "got ref %ld.\n", ref );