TGDockHideButton

    protected:

      virtual void DoRedraw()

    public:

                       TGDockHideButton(const TGCompositeFrame* p = 0)
                       TGDockHideButton(const TGDockHideButton&)
                       ~TGDockHideButton()
        static TClass* Class()
       virtual TClass* IsA() const
                  void SetAspectRatio(Int_t a)
          virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)

    protected:

      Int_t fAspectRatio  triangle orientation

Class Description

                                                                      
 A TGDockableFrame is a frame with handles that allow it to be        
 undocked (i.e. put in a transient frame of its own) and to be docked 
 again or hidden and shown again. It uses the TGDockButton, which is  
 a button with two vertical bars (||) and TGDockHideButton, which is  
 a button with a small triangle. The TGUndockedFrame is a transient   
 frame that on closure will put the frame back in the dock.           
                                                                      

 Create a dock hide button (i.e. button with small triangle).

 Draw dock hide button.