Windows: Fixed a bug where multi-touch inputs weren't being cleared correctly

modules/juce_gui_basics/components/juce_Desktop.cpp

@@ -183,6 +183,7 @@ MouseInputSource* Desktop::getMouseSource (int index) const noexcept
 MouseInputSource* Desktop::getDraggingMouseSource (int index) const noexcept    { return mouseSources->getDraggingMouseSource (index); }
 MouseInputSource Desktop::getMainMouseSource() const noexcept                   { return MouseInputSource (mouseSources->sources.getUnchecked(0)); }
 void Desktop::beginDragAutoRepeat (int interval)                                { mouseSources->beginDragAutoRepeat (interval); }
+void Desktop::clearAllTouchSources()                                            { mouseSources->clearTouches(); }
 
 //==============================================================================
 void Desktop::addFocusChangeListener    (FocusChangeListener* const listener)   { focusListeners.add (listener); }

modules/juce_gui_basics/components/juce_Desktop.h

@@ -288,6 +288,8 @@ public:
     */
     void beginDragAutoRepeat (int millisecondsBetweenCallbacks);
 
+    /** Removes all touch input sources from the mouse sources array. */
+    void clearAllTouchSources();
     //==============================================================================
     /** In a tablet device which can be turned around, this is used to inidicate the orientation. */
     enum DisplayOrientation

modules/juce_gui_basics/mouse/juce_MouseInputSource.cpp

@@ -684,6 +684,21 @@ struct MouseInputSource::SourceList  : public Timer
         return nullptr;
     }
 
+    void clearTouches()
+    {
+        for (auto i = sourceArray.size(); --i >= 0;)
+        {
+            if (sourceArray.getUnchecked (i).getType() == MouseInputSource::InputSourceType::touch)
+                sourceArray.remove (i);
+        }
+
+        for (auto i = sources.size(); --i >= 0;)
+        {
+            if (sources.getUnchecked (i)->inputType == MouseInputSource::InputSourceType::touch)
+                sources.remove (i);
+        }
+    }
+
     int getNumDraggingMouseSources() const noexcept
     {
         int num = 0;

modules/juce_gui_basics/native/juce_win32_Windowing.cpp

@@ -2326,6 +2326,7 @@ private:
         if (isCancel)
         {
             currentTouches.clear();
+            Desktop::getInstance().clearAllTouchSources();
             currentModifiers = currentModifiers.withoutMouseButtons();
         }