TGCanvas

class TGCanvas : public TGFrame

    public:

                 TGCanvas TGCanvas(TGWindow* p, UInt_t w, UInt_t h, UInt_t options = kSunkenFrame|kDoubleBorder, ULong_t back = fgDefaultFrameBackground)
                 TGCanvas TGCanvas(TGCanvas&)
             virtual void ~TGCanvas()
                     void AddFrame(TGFrame* f, TGLayoutHints* l)
                  TClass* Class()
             virtual void DrawBorder()
                 TGFrame* GetContainer()
      virtual TGDimension GetDefaultSize()
                 TGFrame* GetViewPort()
          virtual TClass* IsA()
             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 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.                
                                                                      

 Create a canvas object.

 Delete canvas.

 Map all canvas sub windows.

 Adding a frame to a canvas is actually adding the frame to the
 viewport container. The viewport container is at least a
 TGCompositeFrame.

 Draw canvas border.

 Create layout for canvas. Depending on the size of the container
 we need to add the scrollbars.

 Handle message generated by the canvas scrollbars.

Inline Functions

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