TGCanvas

class description - source file - inheritance tree

class TGCanvas : public TGFrame


    public:

                 TGCanvas TGCanvas(const TGWindow* p, UInt_t w, UInt_t h, UInt_t options = kSunkenFrame|kDoubleBorder, ULong_t back = fgDefaultFrameBackground)
                 TGCanvas TGCanvas(TGCanvas&)
             virtual void ~TGCanvas()
             virtual void AddFrame(TGFrame* f, TGLayoutHints* l = 0)
           static TClass* Class()
             virtual void DrawBorder()
                 TGFrame* GetContainer() const
      virtual TGDimension GetDefaultSize() const
              TGViewPort* GetViewPort() const
          virtual TClass* IsA() const
             virtual void Layout()
             virtual void MapSubwindows()
           virtual Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t parm2)
             virtual void SetContainer(TGFrame* f)
             virtual void SetHsbPosition(Int_t newPos)
             virtual void SetVsbPosition(Int_t newPos)
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
             virtual void Streamer(TBuffer& b)


  Data Members


    protected:

        TGViewPort* fVport       viewport through which we look at contents
      TGHScrollBar* fHScrollbar  horizontal scrollbar
      TGVScrollBar* fVScrollbar  vertical scrollbar

See also

TGListView, TRootEmbeddedCanvas

Class Description

                                                                      
 TGCanvas and TGViewPort                                              
                                                                      
 A TGCanvas is a frame containing two scrollbars (a horizontal and    
 a vertical) and a viewport. The viewport acts as the window through  
 which we look at the contents of the container frame.
TGCanvas(const TGWindow *p, UInt_t w, UInt_t h, UInt_t options, ULong_t back) : TGFrame(p, w, h, options, back) 
 Create a canvas object.
~TGCanvas() 
 Delete canvas.
void MapSubwindows() 
 Map all canvas sub windows.
void AddFrame(TGFrame *f, TGLayoutHints *l) 
 Adding a frame to a canvas is actually adding the frame to the
 viewport container. The viewport container must be at least a
 TGCompositeFrame for this method to succeed.
void DrawBorder() 
 Draw canvas border.
void Layout() 
 Create layout for canvas. Depending on the size of the container
 we need to add the scrollbars.
Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t) 
 Handle message generated by the canvas scrollbars.
void SetHsbPosition(Int_t newPos) 
 Set position of horizontal scrollbar.
void SetVsbPosition(Int_t newPos) 
 Set position of vertical scrollbar.



Inline Functions

           TGFrame* GetContainer() const
        TGViewPort* GetViewPort() const
               void SetContainer(TGFrame* f)
        TGDimension GetDefaultSize() const
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
           TGCanvas TGCanvas(TGCanvas&)

Author: Fons Rademakers 11/01/98
Last update: root/gui:$Name: $:$Id: TGCanvas.cxx,v 1.2 2000/09/11 09:50:20 rdm Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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