5873607e5c
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8967 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
107 lines
3.0 KiB
TeX
107 lines
3.0 KiB
TeX
\section{\class{wxLayoutConstraints}}\label{wxlayoutconstraints}
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Objects of this class can be associated with a window to define its
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layout constraints, with respect to siblings or its parent.
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The class consists of the following eight constraints of class wxIndividualLayoutConstraint,
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some or all of which should be accessed directly to set the appropriate
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constraints.
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\begin{itemize}\itemsep=0pt
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\item {\bf left:} represents the left hand edge of the window
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\item {\bf right:} represents the right hand edge of the window
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\item {\bf top:} represents the top edge of the window
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\item {\bf bottom:} represents the bottom edge of the window
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\item {\bf width:} represents the width of the window
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\item {\bf height:} represents the height of the window
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\item {\bf centreX:} represents the horizontal centre point of the window
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\item {\bf centreY:} represents the vertical centre point of the window
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\end{itemize}
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Most constraints are initially set to have the relationship wxUnconstrained,
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which means that their values should be calculated by looking at known constraints.
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The exceptions are {\it width} and {\it height}, which are set to wxAsIs to
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ensure that if the user does not specify a constraint, the existing
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width and height will be used, to be compatible with panel items which often
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have take a default size. If the constraint is wxAsIs, the dimension will
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not be changed.
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\perlnote{In wxPerl the constraints are accessed as
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\begin{verbatim}
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my( \$constraint ) = Wx::LayoutConstraints->new();
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\$constraint->centreX->AsIs();
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\$constraint->centreY->Unconstrained();
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\end{verbatim}
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}
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\wxheading{Derived from}
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\helpref{wxObject}{wxobject}
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\wxheading{Include files}
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<wx/layout.h>
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\wxheading{See also}
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\helpref{Overview and examples}{constraintsoverview},\rtfsp
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\helpref{wxIndividualLayoutConstraint}{wxindividuallayoutconstraint}, \helpref{wxWindow::SetConstraints}{wxwindowsetconstraints}
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\latexignore{\rtfignore{\wxheading{Members}}}
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\membersection{wxLayoutConstraints::wxLayoutConstraints}
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\func{}{wxLayoutConstraints}{\void}
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Constructor.
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\membersection{wxLayoutConstraints::bottom}
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\member{wxIndividualLayoutConstraint}{bottom}
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Constraint for the bottom edge.
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\membersection{wxLayoutConstraints::centreX}
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\member{wxIndividualLayoutConstraint}{centreX}
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Constraint for the horizontal centre point.
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\membersection{wxLayoutConstraints::centreY}
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\member{wxIndividualLayoutConstraint}{centreY}
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Constraint for the vertical centre point.
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\membersection{wxLayoutConstraints::height}
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\member{wxIndividualLayoutConstraint}{height}
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Constraint for the height.
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\membersection{wxLayoutConstraints::left}
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\member{wxIndividualLayoutConstraint}{left}
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Constraint for the left-hand edge.
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\membersection{wxLayoutConstraints::right}
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\member{wxIndividualLayoutConstraint}{right}
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Constraint for the right-hand edge.
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\membersection{wxLayoutConstraints::top}
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\member{wxIndividualLayoutConstraint}{top}
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Constraint for the top edge.
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\membersection{wxLayoutConstraints::width}
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\member{wxIndividualLayoutConstraint}{width}
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Constraint for the width.
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