Allow 2-phase creation of wxThumbBarButton.

Author: Chaobin Zhang

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77607 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/taskbarbutton.h

@@ -32,6 +32,10 @@ enum WXDLLIMPEXP_CORE wxTaskBarButtonState
 */
 class WXDLLIMPEXP_CORE wxThumbBarButton {
 public:
+    /**
+        Default constructor to allow 2-phase creation.
+    */
+    wxThumbBarButton();
 
     /**
         Constructs the thumbnail toolbar button.
@@ -68,6 +72,15 @@ public:
                      bool shown = true,
                      bool interactive = true);
 
+    bool Create(int id,
+                const wxIcon& icon,
+                const wxString& tooltip = wxString(),
+                bool enable = true,
+                bool dismissOnClick = false,
+                bool hasBackground = true,
+                bool shown = true,
+                bool interactive = true);
+
     virtual ~wxThumbBarButton();
 
     /**