Make wxTaskBarIcon's ctor have the same API on all platforms even though setting the icon type can only be done on wxOSX-cocoa

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71242 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/taskbar.h

@@ -20,6 +20,21 @@
 
 class WXDLLIMPEXP_FWD_ADV wxTaskBarIconEvent;
 
+// ----------------------------------------------------------------------------
+
+// type of taskbar item to create.  Only applicable in wxOSX_COCOA
+enum wxTaskBarIconType
+{
+    wxTBI_DOCK,
+    wxTBI_CUSTOM_STATUSITEM,
+#if wxOSX_USE_COCOA
+    wxTBI_DEFAULT_TYPE = wxTBI_CUSTOM_STATUSITEM
+#else
+    wxTBI_DEFAULT_TYPE = wxTBI_DOCK
+#endif
+};
+
+
 // ----------------------------------------------------------------------------
 // wxTaskBarIconBase: define wxTaskBarIcon interface
 // ----------------------------------------------------------------------------