Classes: \helpref{wxLayoutConstraints}{wxlayoutconstraints}, \helpref{wxIndividualLayoutConstraint}{wxindividuallayoutconstraint}.
+{\bf Note:} constraints are now deprecated and you should use \helpref{sizers}{sizeroverview} instead.
+
Objects of class wxLayoutConstraint can be associated with a window to define
the way it is laid out, with respect to its siblings or the parent.
\helpref{Layout}{wxwindowlayout} yourself if the parent window is not a
frame, panel or dialog).
-\subsection{Constraint layout: more detail}
+\subsection{Constraint layout: more details}\label{constraintlayoutdetails}
By default, windows do not have a wxLayoutConstraints object. In this case, much layout
must be done explicitly, by performing calculations in OnSize members, except
and two for the window size. By setting some or all of these constraints appropriately,
the user can achieve quite complex layout by defining relationships between windows.
-In wxWindows, each window can be constrained relative to either its {\it
+In wxWidgets, each window can be constrained relative to either its {\it
siblings} on the same window, or the {\it parent}. The layout algorithm
therefore operates in a top-down manner, finding the correct layout for
the children of a window, then the layout for the grandchildren, and so
on. Note that this differs markedly from native Motif layout, where
constraints can ripple upwards and can eventually change the frame
-window or dialog box size. We assume in wxWindows that the {\it user} is
+window or dialog box size. We assume in wxWidgets that the {\it user} is
always `boss' and specifies the size of the outer window, to which
subwindows must conform. Obviously, this might be a limitation in some
circumstances, but it suffices for most situations, and the
\subsection{Window layout examples}\label{layoutexamples}
-\subsubsection{Example 1: subwindow layout}
+\subsubsection{Example 1: subwindow layout}\label{subwindowlayoutexample}
This example specifies a panel and a window side by side,
with a text subwindow below it.
frame->text_window->SetConstraints(c3);
\end{verbatim}
-\subsubsection{Example 2: panel item layout}
+\subsubsection{Example 2: panel item layout}\label{panelitemlayoutexample}
This example sizes a button width to 80 percent of the panel width, and centres
it horizontally. A listbox and multitext item are placed below it. The listbox