source: trunk/doc/src/examples/tabdialog.qdoc@ 349

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41
42/*!
43 \example dialogs/tabdialog
44 \title Tab Dialog Example
45
46 The Tab Dialog example shows how to construct a tab dialog using the
47 QTabWidget class.
48
49 Dialogs provide an efficient way for the application to communicate
50 with the user, but complex dialogs suffer from the problem that they
51 often take up too much screen area. By using a number of tabs in a
52 dialog, information can be split into different categories, while
53 remaining accessible.
54
55 \image tabdialog-example.png
56
57 The Tab Dialog example consists of a single \c TabDialog class that
58 provides three tabs, each containing information about a particular
59 file, and two standard push buttons that are used to accept or reject
60 the contents of the dialog.
61
62 \section1 TabDialog Class Definition
63
64 The \c TabDialog class is a subclass of QDialog that displays a
65 QTabWidget and two standard dialog buttons. The class definition
66 only contain the class constructor and a private data member for
67 the QTabWidget:
68
69 \snippet examples/dialogs/tabdialog/tabdialog.h 3
70
71 In the example, the widget will be used as a top-level window, but
72 we define the constructor so that it can take a parent widget. This
73 allows the dialog to be centered on top of an application's main
74 window.
75
76 \section1 TabDialog Class Implementation
77
78 The constructor calls the QDialog constructor and creates a QFileInfo
79 object for the specified filename.
80
81 \snippet examples/dialogs/tabdialog/tabdialog.cpp 0
82
83 The tab widget is populated with three custom widgets that each
84 contain information about the file. We construct each of these
85 without a parent widget because the tab widget will reparent
86 them as they are added to it.
87
88 We create two standard push buttons, and connect each of them to
89 the appropriate slots in the dialog:
90
91 \snippet examples/dialogs/tabdialog/tabdialog.cpp 1
92 \snippet examples/dialogs/tabdialog/tabdialog.cpp 3
93
94 We arrange the the tab widget above the buttons in the dialog:
95
96 \snippet examples/dialogs/tabdialog/tabdialog.cpp 4
97
98 Finally, we set the dialog's title:
99
100 \snippet examples/dialogs/tabdialog/tabdialog.cpp 5
101
102 Each of the tabs are subclassed from QWidget, and only provide
103 constructors.
104
105 \section1 GeneralTab Class Definition
106
107 The GeneralTab widget definition is simple because we are only interested
108 in displaying the contents of a widget within a tab:
109
110 \snippet examples/dialogs/tabdialog/tabdialog.h 0
111
112 \section1 GeneralTab Class Implementation
113
114 The GeneralTab widget simply displays some information about the file
115 passed by the TabDialog. Various widgets for this purpose, and these
116 are arranged within a vertical layout:
117
118 \snippet examples/dialogs/tabdialog/tabdialog.cpp 6
119
120 \section1 PermissionsTab Class Definition
121
122 Like the GeneralTab, the PermissionsTab is just used as a placeholder
123 widget for its children:
124
125 \snippet examples/dialogs/tabdialog/tabdialog.h 1
126
127 \section1 PermissionsTab Class Implementation
128
129 The PermissionsTab shows information about the file's access information,
130 displaying details of the file permissions and owner in widgets that are
131 arranged in nested layouts:
132
133 \snippet examples/dialogs/tabdialog/tabdialog.cpp 7
134
135 \section1 ApplicationsTab Class Definition
136
137 The ApplicationsTab is another placeholder widget that is mostly
138 cosmetic:
139
140 \snippet examples/dialogs/tabdialog/tabdialog.h 2
141
142 \section1 ApplicationsTab Class Implementation
143
144 The ApplicationsTab does not show any useful information, but could be
145 used as a template for a more complicated example:
146
147 \snippet examples/dialogs/tabdialog/tabdialog.cpp 8
148*/
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