TGScrollBar

class TGScrollBar : public TGFrame, public TGWidget

    public:

         virtual void ~TGScrollBar()
       static TClass* Class()
         virtual void DrawBorder()
        virtual Int_t GetPosition() const
                 void GrabPointer(Bool_t grab)
       virtual Bool_t HandleButton(Event_t* event)
       virtual Bool_t HandleMotion(Event_t* event)
       virtual Bool_t HandleTimer(TTimer* t)
      virtual TClass* IsA() const
         virtual void Layout()
         virtual void MapSubwindows()
         virtual void SetPosition(Int_t pos)
         virtual void SetRange(Int_t range, Int_t page_size)
         virtual void ShowMembers(TMemberInspector& insp, char* parent)
         virtual void Streamer(TBuffer& b)

  Data Members

    protected:

                    Int_t fX0               
                    Int_t fY0               current slider position in pixels
                    Int_t fXp               
                    Int_t fYp               previous slider position in pixels
                   Bool_t fDragging         in dragging mode?
                   Bool_t fGrabPointer      grab pointer when dragging
                    Int_t fRange            logical upper range of scrollbar
                    Int_t fPsize            logical page size of scrollbar
                    Int_t fPos              logical current position
                    Int_t fSliderSize       logical slider size
                    Int_t fSliderRange      logical slider range
      TGScrollBarElement* fHead             head button of scrollbar
      TGScrollBarElement* fTail             tail button of scrollbar
      TGScrollBarElement* fSlider           slider
         const TGPicture* fHeadPic          picture in head (up or left arrow)
         const TGPicture* fTailPic          picture in tail (down or right arrow)
                  TTimer* fRepeat           repeat rate timer (when mouse stays pressed)
                 Window_t fSubw             sub window in which mouse is pressed
          static Pixmap_t fgBckgndPixmap    
             static Int_t fgScrollBarWidth  

See also

TGHScrollBar, TGVScrollBar

Class Description

                                                                      
 TGScrollBar and TGScrollBarElement                                   
                                                                      
 The classes in this file implement scrollbars. Scrollbars can be     
 either placed horizontal or vertical. A scrollbar contains three     
 TGScrollBarElements: The "head", "tail" and "slider". The head and   
 tail are fixed at either end and have the typical arrows in them.    
                                                                      
 The TGHScrollBar will generate the following event messages:         
 kC_HSCROLL, kSB_SLIDERPOS, position, 0                               
 kC_HSCROLL, kSB_SLIDERTRACK, position, 0                             
                                                                      
 The TGVScrollBar will generate the following event messages:         
 kC_VSCROLL, kSB_SLIDERPOS, position, 0                               
 kC_VSCROLL, kSB_SLIDERTRACK, position, 0                             
                                                                      

 Delete a scrollbar (either horizontal or vertical).

 Handle repeat timer for horizontal or vertical scrollbar. Every time
 timer times out we move slider.

Inline Functions

               void GrabPointer(Bool_t grab)
               void DrawBorder()
             Bool_t HandleButton(Event_t* event)
             Bool_t HandleMotion(Event_t* event)
               void Layout()
               void SetRange(Int_t range, Int_t page_size)
               void SetPosition(Int_t pos)
              Int_t GetPosition() const
               void MapSubwindows()
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)