Use the usual WXHWND instead of wxWidget.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77639 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/taskbarbutton.h

@@ -134,7 +134,7 @@ private:
 class WXDLLIMPEXP_CORE wxAppProgressIndicator
 {
 public:
-    wxAppProgressIndicator(WXWidget parent, int maxValue);
+    wxAppProgressIndicator(wxWindow* parent = NULL, int maxValue = 100);
     virtual ~wxAppProgressIndicator();
     void SetValue(int value);
     void SetRange(int range);
@@ -142,7 +142,6 @@ public:
     void Reset();
 
 private:
-    WXWidget m_parent;
     int m_maxValue;
     wxTaskBarButton* m_taskBarButton;