preparation for allowing to use wxTimer in wxBase (heavily modified patch 1113088):

1. Changed wxTimer to use wxTimerImpl
2. Added Unix-specific generic timer implementation
3. Added wxAppTraits::CreateTimerImpl()


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45544 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/app.cpp

@@ -52,6 +52,7 @@
 
 #include "wx/msw/private.h"
 #include "wx/msw/ole/oleutils.h"
+#include "wx/msw/private/timer.h"
 
 #if wxUSE_TOOLTIPS
     #include "wx/tooltip.h"
@@ -265,6 +266,12 @@ wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const
 #endif
 }
 
+wxTimerImpl *
+wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)
+{
+  return new wxMSWTimerImpl(timer);
+};
+
 // ===========================================================================
 // wxApp implementation
 // ===========================================================================