This layout hint must be used for the TGXYLayout manager!

Example how to use this layout manager:

TGMyFrame::TGMyFrame()
   : TGMainFrame(gClient->GetRoot(), 30, 12)
   // frame is 30 character long and 12 character heigh
{
   SetLayoutManager(new TGXYLayout(this));
 
   // create a button of size 8 X 1.8 at position 20 / 1
   TGTextButton * button;
   button = new TGTextButton(this, "&Apply", 1);
   AddFrame(button, new TGXYLayoutHints(20, 1, 8, 1.8));
 
   // create a listbox of size 18 X 10 at position 1 / 1.
   // The height will increase if the frame height increases
   TGListBox * listBox;
   listBox = new TGListBox(this, 2);
   AddFrame(listBox, new TGXYLayoutHints(1, 1, 18, 10,
            TGXYLayoutHints::kLRubberX |
            TGXYLayoutHints::kLRubberY |
            TGXYLayoutHints::kLRubberH ));
   .
   .
   .
}

Normally there is one layout hint per widget. Therefore these can be deleted like in the following example in the destructor of the frame:

TGMyFrame::~TGMyFrame()
{
   // Destructor, deletes all frames and their layout hints.
 
   TGFrameElement *ptr;
 
   // delete all frames and layout hints
   if (fList) {
      TIter next(fList);
      while ((ptr = (TGFrameElement *) next())) {
         if (ptr->fLayout)
            delete ptr->fLayout;
         if (ptr->fFrame)
            delete ptr->fFrame;
      }
   }
}

Definition at line 19 of file TGXYLayout.h.

Public Types
enum	ERubberFlag { kLRubberX = (1ULL << ( 0 )) , kLRubberY = (1ULL << ( 1 )) , kLRubberW = (1ULL << ( 2 )) , kLRubberH = (1ULL << ( 3 )) }

Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Public Types inherited from TRefCnt
enum	EReferenceFlag { kStaticInit }

Public Member Functions
	TGXYLayoutHints (Double_t x, Double_t y, Double_t w, Double_t h, UInt_t rubberFlag=kLRubberX\|kLRubberY)
	Constructor.

UInt_t	GetFlag () const

Double_t	GetH () const

Double_t	GetW () const

Double_t	GetX () const

Double_t	GetY () const

TClass *	IsA () const override

void	SavePrimitive (std::ostream &out, Option_t *="") override
	Save XY layout hints as a C++ statement(s) on output stream.

void	SetFlag (UInt_t flag)

void	SetH (Double_t h)

void	SetW (Double_t w)

void	SetX (Double_t x)

void	SetY (Double_t y)

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TGLayoutHints
	TGLayoutHints (const TGLayoutHints &lh)
	Constructor.

	TGLayoutHints (ULong_t hints=kLHintsNormal, Int_t padleft=0, Int_t padright=0, Int_t padtop=0, Int_t padbottom=0)

	~TGLayoutHints () override
	Destructor.

ULong_t	GetLayoutHints () const

Int_t	GetPadBottom () const

Int_t	GetPadLeft () const

Int_t	GetPadRight () const

Int_t	GetPadTop () const

void	ls (Option_t *option="") const override
	The ls function lists the contents of a class on stdout.

void	Print (Option_t *option="") const override
	Printing.

virtual void	SetLayoutHints (ULong_t lh)

virtual void	SetPadBottom (Int_t v)

virtual void	SetPadLeft (Int_t v)

virtual void	SetPadRight (Int_t v)

virtual void	SetPadTop (Int_t v)

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual void	Clear (Option_t *="")

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility.

virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method.

virtual void	Copy (TObject &object) const
	Copy this to obj.

virtual void	Delete (Option_t *option="")
	Delete this object.

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: `gROOT->SetSelectedPad(c1)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

virtual void	Execute (const char method, const char params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual const char *	GetName () const
	Returns name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual const char *	GetTitle () const
	Returns title of object.

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

virtual ULong_t	Hash () const
	Return hash value for this object.

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

virtual Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete (void ptr, void vp)
	Only called by placement new when throwing an exception.

void	operator delete[] (void *ptr)
	Operator delete [].

void	operator delete[] (void ptr, void vp)
	Only called by placement new[] when throwing an exception.

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator.

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Public Member Functions inherited from TRefCnt
	TRefCnt (EReferenceFlag)
	Leave fRefs alone.

	TRefCnt (Int_t initRef=0)

virtual	~TRefCnt ()

void	AddReference ()

UInt_t	References () const

UInt_t	RemoveReference ()

void	SetRefCount (UInt_t r)

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TGLayoutHints
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Protected Attributes
UInt_t	fFlag
	rubber flag

Double_t	fH
	height of widget

Double_t	fW
	width of widget

Double_t	fX
	x - position of widget

Double_t	fY
	y - position of widget

Protected Attributes inherited from TGLayoutHints
ULong_t	fLayoutHints

Int_t	fPadbottom

Int_t	fPadleft

Int_t	fPadright

Int_t	fPadtop

Protected Attributes inherited from TRefCnt
UInt_t	fRefs

Additional Inherited Members
Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

Protected Member Functions inherited from TGLayoutHints
void	UpdateFrameElements (TGLayoutHints *l)
	Update layout hints of frame elements.

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected).

void	MakeZombie ()

#include <TGXYLayout.h>

Inheritance diagram for TGXYLayoutHints:

[legend]

Member Enumeration Documentation

◆ ERubberFlag

enum TGXYLayoutHints::ERubberFlag

Enumerator
kLRubberX
kLRubberY
kLRubberW
kLRubberH

Definition at line 30 of file TGXYLayout.h.

Constructor & Destructor Documentation

◆ TGXYLayoutHints()

TGXYLayoutHints::TGXYLayoutHints	(	Double_t	x,
		Double_t	y,
		Double_t	w,
		Double_t	h,
		UInt_t	rubberFlag = kLRubberX \| kLRubberY )

Constructor.

The x, y, w and h define the position of the widget in its frame and the size of the widget. The unit is the size of a character. The rubberFlag defines how to move and to resize the widget when the frame is resized. Default is moving the X and Y position but keep the size of the widget.

Definition at line 125 of file TGXYLayout.cxx.

Member Function Documentation

◆ Class()

static TClass * TGXYLayoutHints::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TGXYLayoutHints::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TGXYLayoutHints::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 54 of file TGXYLayout.h.

◆ DeclFileName()

static const char * TGXYLayoutHints::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 54 of file TGXYLayout.h.

◆ GetFlag()

UInt_t TGXYLayoutHints::GetFlag ( ) const

inline

Definition at line 44 of file TGXYLayout.h.

◆ GetH()

Double_t TGXYLayoutHints::GetH ( ) const

inline

Definition at line 43 of file TGXYLayout.h.

◆ GetW()

Double_t TGXYLayoutHints::GetW ( ) const

inline

Definition at line 42 of file TGXYLayout.h.

◆ GetX()

Double_t TGXYLayoutHints::GetX ( ) const

inline

Definition at line 40 of file TGXYLayout.h.

◆ GetY()

Double_t TGXYLayoutHints::GetY ( ) const

inline

Definition at line 41 of file TGXYLayout.h.

◆ IsA()

TClass * TGXYLayoutHints::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TGLayoutHints.

Definition at line 54 of file TGXYLayout.h.

◆ SavePrimitive()

void TGXYLayoutHints::SavePrimitive	(	std::ostream &	out,
		Option_t *	= "" )

overridevirtual

Save XY layout hints as a C++ statement(s) on output stream.

Reimplemented from TGLayoutHints.

Definition at line 139 of file TGXYLayout.cxx.

◆ SetFlag()

void TGXYLayoutHints::SetFlag ( UInt_t flag )

inline

Definition at line 50 of file TGXYLayout.h.

◆ SetH()

void TGXYLayoutHints::SetH ( Double_t h )

inline

Definition at line 49 of file TGXYLayout.h.

◆ SetW()

void TGXYLayoutHints::SetW ( Double_t w )

inline

Definition at line 48 of file TGXYLayout.h.

◆ SetX()

void TGXYLayoutHints::SetX ( Double_t x )

inline

Definition at line 46 of file TGXYLayout.h.

◆ SetY()

void TGXYLayoutHints::SetY ( Double_t y )

inline

Definition at line 47 of file TGXYLayout.h.

◆ Streamer()

void TGXYLayoutHints::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from TGLayoutHints.

◆ StreamerNVirtual()

void TGXYLayoutHints::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 54 of file TGXYLayout.h.

Member Data Documentation

◆ fFlag

UInt_t TGXYLayoutHints::fFlag

protected

rubber flag

Definition at line 26 of file TGXYLayout.h.

◆ fH

Double_t TGXYLayoutHints::fH

protected

height of widget

Definition at line 25 of file TGXYLayout.h.

◆ fW

Double_t TGXYLayoutHints::fW

protected

width of widget

Definition at line 24 of file TGXYLayout.h.

◆ fX

Double_t TGXYLayoutHints::fX

protected

x - position of widget

Definition at line 22 of file TGXYLayout.h.

◆ fY

Double_t TGXYLayoutHints::fY

protected

y - position of widget

Definition at line 23 of file TGXYLayout.h.

Libraries for TGXYLayoutHints:

[legend]

The documentation for this class was generated from the following files:

gui/gui/inc/TGXYLayout.h
gui/gui/src/TGXYLayout.cxx

Public Types

Public Member Functions

Static Public Member Functions

Protected Attributes

Additional Inherited Members

Member Enumeration Documentation

◆ ERubberFlag

Constructor & Destructor Documentation

◆ TGXYLayoutHints()

Member Function Documentation

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ DeclFileName()

◆ GetFlag()

◆ GetH()

◆ GetW()

◆ GetX()

◆ GetY()

◆ IsA()

◆ SavePrimitive()

◆ SetFlag()

◆ SetH()

◆ SetW()

◆ SetX()

◆ SetY()

◆ Streamer()

◆ StreamerNVirtual()

Member Data Documentation

◆ fFlag

◆ fH

◆ fW

◆ fX

◆ fY