class description - source file - inheritance tree

class TGScrollBar : public TGFrame, public TGWidget

virtual void ~TGScrollBar() static TClass* Class() virtual void DrawBorder() static Pixmap_t GetBckgndPixmap() virtual Int_t GetPosition() const static Int_t GetScrollBarWidth() 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) void StreamerNVirtual(TBuffer& b)

Data Members

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 public:

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).

Bool_t HandleTimer(TTimer *t)
 Handle repeat timer for horizontal or vertical scrollbar. Every time
 timer times out we move slider.

Pixmap_t GetBckgndPixmap()
 Static method returning scrollbar background pixmap.

Int_t GetScrollBarWidth()
 Static method returning the scrollbar width.

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)
               void StreamerNVirtual(TBuffer& b)

Author: Fons Rademakers 10/01/98
Last update: root/gui:$Name: $:$Id: TGScrollBar.cxx,v 1.6 2001/05/02 11:45:46 rdm Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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