Fixed a bug in iOS and Windows multi-touch code where touches on different windows weren't aware of each other

modules/juce_gui_basics/native/juce_ios_UIViewComponentPeer.mm

@@ -285,7 +285,7 @@ public:
         return r;
     }
 
-    MultiTouchMapper<UITouch*> currentTouches;
+    static MultiTouchMapper<UITouch*> currentTouches;
 
 private:
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (UIViewComponentPeer)
@@ -324,6 +324,8 @@ static bool isKioskModeView (JuceUIViewController* c)
     return Desktop::getInstance().getKioskModeComponent() == &(juceView->owner->getComponent());
 }
 
+MultiTouchMapper<UITouch*> UIViewComponentPeer::currentTouches;
+
 
 } // (juce namespace)
 

modules/juce_gui_basics/native/juce_win32_Windowing.cpp

@@ -1461,11 +1461,12 @@ private:
     FileDropTarget* dropTarget = nullptr;
     uint8 updateLayeredWindowAlpha = 255;
     UWPUIViewSettings uwpViewSettings;
-    MultiTouchMapper<DWORD> currentTouches;
    #if JUCE_MODULE_AVAILABLE_juce_audio_plugin_client
     ModifierKeyProvider* modProvider = nullptr;
    #endif
 
+    static MultiTouchMapper<DWORD> currentTouches;
+
     //==============================================================================
     struct TemporaryImage    : private Timer
     {
@@ -3499,6 +3500,8 @@ private:
 ModifierKeys HWNDComponentPeer::currentModifiers;
 ModifierKeys HWNDComponentPeer::modifiersAtLastCallback;
 
+MultiTouchMapper<DWORD> HWNDComponentPeer::currentTouches;
+
 ComponentPeer* Component::createNewPeer (int styleFlags, void* parentHWND)
 {
     return new HWNDComponentPeer (*this, styleFlags, (HWND) parentHWND, false);