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