Windows: Fixed a bug on later versions of Windows 10 causing the on-screen keyboard to keep showing and hiding

modules/juce_gui_basics/native/juce_win32_Windowing.cpp

@@ -1044,7 +1044,7 @@ private:
 
         const ScopedValueSetter<bool> setter (reentrant, true, false);
 
-        const bool isActive = isVisible();
+        auto isActive = isKeyboardVisible();
 
         if (isActive != shouldBeActive)
         {
@@ -1061,6 +1061,14 @@ private:
     }
 
     bool isVisible()
+    {
+        if (auto hwnd = FindWindowEx (NULL, NULL, L"ApplicationFrameWindow", NULL))
+            return FindWindowEx (hwnd, NULL, L"Windows.UI.Core.CoreWindow", L"Microsoft Text Input Application") != NULL;
+
+        return false;
+    }
+
+    bool isVisibleLegacy()
     {
         if (auto hwnd = FindWindow (L"IPTip_Main_Window", NULL))
         {
@@ -1071,6 +1079,15 @@ private:
         return false;
     }
 
+    bool isKeyboardVisible()
+    {
+        if (isVisible())
+            return true;
+
+        // isVisible() may fail on Win10 versions < 1709 so try the old method too
+        return isVisibleLegacy();
+    }
+
     bool shouldBeActive = false, reentrant = false;
     ComSmartPtr<ITipInvocation> tipInvocation;
 };