In Windows 10, extraneous information is no longer reported when pres…

…sing alt+tab or alt+shift+tab to switch between applications.

Fixes #5116.

source/appModules/explorer.py

@@ -17,6 +17,19 @@
 from NVDAObjects.IAccessible import sysListView32, IAccessible
 from NVDAObjects.UIA import UIA
 
+# Suppress incorrect Win 10 Task switching window focus
+class MultitaskingViewFrameWindow(UIA):
+	shouldAllowUIAFocusEvent=False
+
+# suppress focus ancestry for task switching list items if alt is held down (alt+tab)
+class MultitaskingViewFrameListItem(UIA):
+
+	def _get_container(self):
+		if winUser.getAsyncKeyState(winUser.VK_MENU)&32768:
+			return api.getDesktopObject()
+		else:
+			return super(MultitaskingViewFrameListItem,self).container
+
 # support for Win8 start screen search suggestions.
 class SuggestionListItem(UIA):
 
@@ -175,6 +188,10 @@ def chooseNVDAObjectOverlayClasses(self, obj, clsList):
 				clsList.insert(0, ImmersiveLauncher)
 			elif uiaClassName=="ListViewItem" and obj.UIAElement.cachedAutomationId.startswith('Suggestion_'):
 				clsList.insert(0,SuggestionListItem)
+			elif uiaClassName=="MultitaskingViewFrame" and role==controlTypes.ROLE_WINDOW:
+				clsList.insert(0,MultitaskingViewFrameWindow)
+			elif obj.windowClassName=="MultitaskingViewFrame" and role==controlTypes.ROLE_LISTITEM:
+				clsList.insert(0,MultitaskingViewFrameListItem)
 
 	def event_NVDAObject_init(self, obj):
 		windowClass = obj.windowClassName

user_docs/en/changes.t2t

@@ -17,6 +17,7 @@
 - In Firefox, NVDA no longer tries to create a description for ARIA tab panels based  on all text inside. (#4638)
 - In Internet Explorer and other MSHTML controls, tabbing into sections, articles or dialogs  no longer reports all contents of the container as its name. (#5021, #5025) 
 - When using Baum/HumanWare/APH braille displays with a braille keyboard, braille input no longer stops functioning after pressing another type of key on the display. (#3541)
+- In Windows 10, extraneous information is no longer reported when pressing alt+tab or alt+shift+tab to switch between applications. (#5116)
 
 
 = 2015.2 =