remove redundant @hwnd and use Control#hwnd instead
remove redundant @hwnd and use Control#hwnd instead

modulexcite/RAutomation,jarmo/RAutomation,jarmo/RAutomation,modulexcite/RAutomation,jarmo/RAutomation,modulexcite/RAutomation,jarmo/RAutomation,modulexcite/RAutomation