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	1	\section{\class{wxLayoutConstraints}}\label{wxlayoutconstraints}
	2
	3	{\bf Note:} constraints are now deprecated and you should use \helpref{sizers}{sizeroverview} instead.
	4
	5	Objects of this class can be associated with a window to define its
	6	layout constraints, with respect to siblings or its parent.
	7
	8	The class consists of the following eight constraints of class wxIndividualLayoutConstraint,
	9	some or all of which should be accessed directly to set the appropriate
	10	constraints.
	11
	12	\begin{itemize}\itemsep=0pt
	13	\item {\bf left:} represents the left hand edge of the window
	14	\item {\bf right:} represents the right hand edge of the window
	15	\item {\bf top:} represents the top edge of the window
	16	\item {\bf bottom:} represents the bottom edge of the window
	17	\item {\bf width:} represents the width of the window
	18	\item {\bf height:} represents the height of the window
	19	\item {\bf centreX:} represents the horizontal centre point of the window
	20	\item {\bf centreY:} represents the vertical centre point of the window
	21	\end{itemize}
	22
	23	Most constraints are initially set to have the relationship wxUnconstrained,
	24	which means that their values should be calculated by looking at known constraints.
	25	The exceptions are {\it width} and {\it height}, which are set to wxAsIs to
	26	ensure that if the user does not specify a constraint, the existing
	27	width and height will be used, to be compatible with panel items which often
	28	have take a default size. If the constraint is wxAsIs, the dimension will
	29	not be changed.
	30
	31	\perlnote{In wxPerl the constraints are accessed as
	32	\begin{verbatim}
	33	constraint = Wx::LayoutConstraints->new();
	34	constraint->centreX->AsIs();
	35	constraint->centreY->Unconstrained();
	36	\end{verbatim}
	37	}
	38
	39	\wxheading{Derived from}
	40
	41	\helpref{wxObject}{wxobject}
	42
	43	\wxheading{Include files}
	44
	45	<wx/layout.h>
	46
	47	\wxheading{See also}
	48
	49	\helpref{Overview and examples}{constraintsoverview},\rtfsp
	50	\helpref{wxIndividualLayoutConstraint}{wxindividuallayoutconstraint}, \helpref{wxWindow::SetConstraints}{wxwindowsetconstraints}
	51
	52	\latexignore{\rtfignore{\wxheading{Members}}}
	53
	54	\membersection{wxLayoutConstraints::wxLayoutConstraints}\label{wxlayoutconstraintsctor}
	55
	56	\func{}{wxLayoutConstraints}{\void}
	57
	58	Constructor.
	59
	60	\membersection{wxLayoutConstraints::bottom}\label{wxlayoutconstraintsbottom}
	61
	62	\member{wxIndividualLayoutConstraint}{bottom}
	63
	64	Constraint for the bottom edge.
	65
	66	\membersection{wxLayoutConstraints::centreX}\label{wxlayoutconstraintscentrex}
	67
	68	\member{wxIndividualLayoutConstraint}{centreX}
	69
	70	Constraint for the horizontal centre point.
	71
	72	\membersection{wxLayoutConstraints::centreY}\label{wxlayoutconstraintscentrey}
	73
	74	\member{wxIndividualLayoutConstraint}{centreY}
	75
	76	Constraint for the vertical centre point.
	77
	78	\membersection{wxLayoutConstraints::height}\label{wxlayoutconstraintsheight}
	79
	80	\member{wxIndividualLayoutConstraint}{height}
	81
	82	Constraint for the height.
	83
	84	\membersection{wxLayoutConstraints::left}\label{wxlayoutconstraintsleft}
	85
	86	\member{wxIndividualLayoutConstraint}{left}
	87
	88	Constraint for the left-hand edge.
	89
	90	\membersection{wxLayoutConstraints::right}\label{wxlayoutconstraintsright}
	91
	92	\member{wxIndividualLayoutConstraint}{right}
	93
	94	Constraint for the right-hand edge.
	95
	96	\membersection{wxLayoutConstraints::top}\label{wxlayoutconstraintstop}
	97
	98	\member{wxIndividualLayoutConstraint}{top}
	99
	100	Constraint for the top edge.
	101
	102	\membersection{wxLayoutConstraints::width}\label{wxlayoutconstraintswidth}
	103
	104	\member{wxIndividualLayoutConstraint}{width}
	105
	106	Constraint for the width.
	107
	108