TGRegion

class TGRegion : public TObject

    protected:

               TGRegion(Bool_t)
      TGRegion CopyRegion() const

    public:

                      TGRegion()
                      TGRegion(Int_t x, Int_t y, UInt_t w, UInt_t h, TGRegion::ERegionType = kRectangle)
                      TGRegion(Int_t n, TPoint* points, Bool_t winding = kFALSE)
                      TGRegion(Int_t n, Int_t* x, Int_t* y, Bool_t winding = kFALSE)
                      TGRegion(const TArrayS& x, const TArrayS& y, Bool_t winding = kFALSE)
                      TGRegion(const TGRegion& reg)
             TGRegion Unite(const TGRegion& r) const
             TGRegion Intersect(const TGRegion& r) const
             TGRegion Subtract(const TGRegion& r) const
             TGRegion Eor(const TGRegion& r) const
             TGRegion operator|(const TGRegion& r) const
             TGRegion operator+(const TGRegion& r) const
             TGRegion operator&(const TGRegion& r) const
             TGRegion operator-(const TGRegion& r) const
             TGRegion operator^(const TGRegion& r) const
              virtual ~TGRegion()
       static TClass* Class()
               Bool_t Contains(const TPoint& p) const
               Bool_t Contains(Int_t x, Int_t y) const
          TGDimension GetDimension() const
           TGPosition GetPosition() const
      virtual TClass* IsA() const
               Bool_t IsEmpty() const
               Bool_t IsNull() const
               Bool_t operator!=(const TGRegion& r) const
            TGRegion& operator&=(const TGRegion& r)
            TGRegion& operator+=(const TGRegion& r)
            TGRegion& operator-=(const TGRegion& r)
            TGRegion& operator=(const TGRegion& r)
               Bool_t operator==(const TGRegion& r) const
            TGRegion& operator^=(const TGRegion& r)
            TGRegion& operator|=(const TGRegion& r)
         virtual void ShowMembers(TMemberInspector& insp, char* parent)
         virtual void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)

Data Members

    protected:

      TGRegionData* fData  data describing region

    public:

      static const TGRegion::ERegionType kRectangle  
      static const TGRegion::ERegionType kEllipse    

Class Description

                                                                      
 TGImageMap (with TGRegion and TGRegionWithId help classes)           
                                                                      
 A TGImageMap provides the functionality like a clickable image in    
 a web browser with sensitive regions (MAP HTML tag).                 
                                                                      

 Create a region object.

 Create empty region.

 Create and initialize a region with a rectangle.

 Create and intialize a region with a polygon.

 Create and initialize a region with an X and a Y array of points.

 Create and initialize a region with an X and Y array of points.

 Region copy constructor.

 Delete a region.

 Copy a region.

 Return true if region is not set.

 Return true if region is empty.

 Return true if point p is contained in the region.

 Return true if point (x,y) is contained in the region.

 Return the union of this region with r.

 Returns a region which is the intersection of this region and r.

 Returns a region which is r subtracted from this region.

 Returns a region which is the difference between the union and
 intersection this region and r.

 Return dimension of region (widht, height).

 Return position of region (x, y).

Inline Functions

           TGRegion operator|(const TGRegion& r) const
           TGRegion operator+(const TGRegion& r) const
           TGRegion operator&(const TGRegion& r) const
           TGRegion operator-(const TGRegion& r) const
           TGRegion operator^(const TGRegion& r) const
          TGRegion& operator|=(const TGRegion& r)
          TGRegion& operator+=(const TGRegion& r)
          TGRegion& operator&=(const TGRegion& r)
          TGRegion& operator-=(const TGRegion& r)
          TGRegion& operator^=(const TGRegion& r)
             Bool_t operator==(const TGRegion& r) const
             Bool_t operator!=(const TGRegion& r) const
          TGRegion& operator=(const TGRegion& r)
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)