1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/sql/qsqlpropertymap.cpp:53 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>TQSqlPropertyMap Class</title>
<style type="text/css"><!--
fn { margin-left: 1cm; text-indent: -1cm; }
a:link { color: #004faf; text-decoration: none }
a:visited { color: #672967; text-decoration: none }
body { background: #ffffff; color: black; }
--></style>
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr bgcolor="#E5E5E5">
<td valign=center>
<a href="index.html">
<font color="#004faf">Home</font></a>
| <a href="classes.html">
<font color="#004faf">All Classes</font></a>
| <a href="mainclasses.html">
<font color="#004faf">Main Classes</font></a>
| <a href="annotated.html">
<font color="#004faf">Annotated</font></a>
| <a href="groups.html">
<font color="#004faf">Grouped Classes</font></a>
| <a href="functions.html">
<font color="#004faf">Functions</font></a>
</td>
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQSqlPropertyMap Class Reference<br><small>[<a href="sql.html">sql module</a>]</small></h1>
<p>The TQSqlPropertyMap class is used to map widgets to SQL fields.
<a href="#details">More...</a>
<p><tt>#include <<a href="qsqlpropertymap-h.html">ntqsqlpropertymap.h</a>></tt>
<p><a href="qsqlpropertymap-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#TQSqlPropertyMap"><b>TQSqlPropertyMap</b></a> ()</li>
<li class=fn>virtual <a href="#~TQSqlPropertyMap"><b>~TQSqlPropertyMap</b></a> ()</li>
<li class=fn>TQVariant <a href="#property"><b>property</b></a> ( TQWidget * widget )</li>
<li class=fn>virtual void <a href="#setProperty"><b>setProperty</b></a> ( TQWidget * widget, const TQVariant & value )</li>
<li class=fn>void <a href="#insert"><b>insert</b></a> ( const TQString & classname, const TQString & property )</li>
<li class=fn>void <a href="#remove"><b>remove</b></a> ( const TQString & classname )</li>
</ul>
<h2>Static Public Members</h2>
<ul>
<li class=fn>TQSqlPropertyMap * <a href="#defaultMap"><b>defaultMap</b></a> ()</li>
<li class=fn>void <a href="#installDefaultMap"><b>installDefaultMap</b></a> ( TQSqlPropertyMap * map )</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The TQSqlPropertyMap class is used to map widgets to SQL fields.
<p>
<p> The SQL module uses TQt <a href="properties.html">object
properties</a> to insert and extract values from editor
widgets.
<p> This class is used to map editors to SQL fields. This works by
associating SQL editor class names to the properties used to
insert and extract values to/from the editor.
<p> For example, a <a href="ntqlineedit.html">TQLineEdit</a> can be used to edit text strings and
other data types in TQDataTables or TQSqlForms. Several properties
are defined in TQLineEdit, but only the <em>text</em> property is used to
insert and extract text from a TQLineEdit. Both <a href="ntqdatatable.html">TQDataTable</a> and
<a href="ntqsqlform.html">TQSqlForm</a> use the global TQSqlPropertyMap for inserting and
extracting values to and from an editor widget. The global
property map defines several common widgets and properties that
are suitable for many applications. You can add and remove widget
properties to suit your specific needs.
<p> If you want to use custom editors with your TQDataTable or
TQSqlForm, you must install your own TQSqlPropertyMap for that table
or form. Example:
<p> <pre>
TQSqlPropertyMap *myMap = new TQSqlPropertyMap();
<a href="ntqsqlform.html">TQSqlForm</a> *myForm = new <a href="ntqsqlform.html">TQSqlForm</a>( this );
MyEditor myEditor( this );
// Set the TQSqlForm's record buffer to the update buffer of
// a pre-existing TQSqlCursor called 'cur'.
myForm-><a href="ntqsqlform.html#setRecord">setRecord</a>( cur->primeUpdate() );
// Install the customized map
myMap-><a href="#insert">insert</a>( "MyEditor", "content" );
myForm-><a href="ntqsqlform.html#installPropertyMap">installPropertyMap</a>( myMap ); // myForm now owns myMap
...
// Insert a field into the form that uses a myEditor to edit the
// field 'somefield'
myForm-><a href="ntqsqlform.html#insert">insert</a>( &myEditor, "somefield" );
// Update myEditor with the value from the mapped database field
myForm-><a href="ntqsqlform.html#readFields">readFields</a>();
...
// Let the user edit the form
...
// Update the database fields with the values in the form
myForm-><a href="ntqsqlform.html#writeFields">writeFields</a>();
...
</pre>
<p> You can also replace the global TQSqlPropertyMap that is used by
default. (Bear in mind that TQSqlPropertyMap takes ownership of the
new default map.)
<p> <pre>
TQSqlPropertyMap *myMap = new TQSqlPropertyMap;
myMap-><a href="#insert">insert</a>( "MyEditor", "content" );
TQSqlPropertyMap::<a href="#installDefaultMap">installDefaultMap</a>( myMap );
...
</pre>
<p> <p>See also <a href="ntqdatatable.html">TQDataTable</a>, <a href="ntqsqlform.html">TQSqlForm</a>, <a href="ntqsqleditorfactory.html">TQSqlEditorFactory</a>, and <a href="database.html">Database Classes</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="TQSqlPropertyMap"></a>TQSqlPropertyMap::TQSqlPropertyMap ()
</h3>
<p> Constructs a TQSqlPropertyMap.
<p> The default property mappings used by TQt widgets are:
<center><table cellpadding="4" cellspacing="2" border="0">
<tr bgcolor="#a2c511"> <th valign="top">Widgets <th valign="top">Property
<tr bgcolor="#f0f0f0"> <td valign="top"><a href="ntqcheckbox.html">TQCheckBox</a>,
<a href="ntqradiobutton.html">TQRadioButton</a>
<td valign="top">checked
<tr bgcolor="#d0d0d0"> <td valign="top"><a href="ntqcombobox.html">TQComboBox</a>,
<a href="ntqlistbox.html">TQListBox</a>
<td valign="top">currentItem
<tr bgcolor="#f0f0f0"> <td valign="top"><a href="qdateedit.html">TQDateEdit</a>
<td valign="top">date
<tr bgcolor="#d0d0d0"> <td valign="top"><a href="ntqdatetimeedit.html">TQDateTimeEdit</a>
<td valign="top">dateTime
<tr bgcolor="#f0f0f0"> <td valign="top"><a href="ntqtextbrowser.html">TQTextBrowser</a>
<td valign="top">source
<tr bgcolor="#d0d0d0"> <td valign="top"><a href="ntqbutton.html">TQButton</a>,
<a href="ntqdial.html">TQDial</a>,
<a href="ntqlabel.html">TQLabel</a>,
<a href="ntqlineedit.html">TQLineEdit</a>,
<a href="ntqmultilineedit.html">TQMultiLineEdit</a>,
<a href="ntqpushbutton.html">TQPushButton</a>,
<a href="ntqtextedit.html">TQTextEdit</a>,
<td valign="top">text
<tr bgcolor="#f0f0f0"> <td valign="top"><a href="qtimeedit.html">TQTimeEdit</a>
<td valign="top">time
<tr bgcolor="#d0d0d0"> <td valign="top"><a href="ntqlcdnumber.html">TQLCDNumber</a>,
<a href="ntqscrollbar.html">TQScrollBar</a>
<a href="ntqslider.html">TQSlider</a>,
<a href="ntqspinbox.html">TQSpinBox</a>
<td valign="top">value
</table></center>
<h3 class=fn><a name="~TQSqlPropertyMap"></a>TQSqlPropertyMap::~TQSqlPropertyMap ()<tt> [virtual]</tt>
</h3>
Destroys the TQSqlPropertyMap.
<p> Note that if the TQSqlPropertyMap is installed with
installPropertyMap() the object it was installed into, e.g. the
<a href="ntqsqlform.html">TQSqlForm</a>, takes ownership and will delete the TQSqlPropertyMap when
necessary.
<h3 class=fn><a href="ntqsqlpropertymap.html">TQSqlPropertyMap</a> * <a name="defaultMap"></a>TQSqlPropertyMap::defaultMap ()<tt> [static]</tt>
</h3>
Returns the application global TQSqlPropertyMap.
<h3 class=fn>void <a name="insert"></a>TQSqlPropertyMap::insert ( const <a href="ntqstring.html">TQString</a> & classname, const <a href="ntqstring.html">TQString</a> & property )
</h3>
Insert a new classname/property pair, which is used for custom SQL
field editors. There <em>must</em> be a <tt>Q_PROPERTY</tt> clause in the <em>classname</em> class declaration for the <em>property</em>.
<p>Example: <a href="sql.html#x2239">sql/overview/custom1/main.cpp</a>.
<h3 class=fn>void <a name="installDefaultMap"></a>TQSqlPropertyMap::installDefaultMap ( <a href="ntqsqlpropertymap.html">TQSqlPropertyMap</a> * map )<tt> [static]</tt>
</h3>
Replaces the global default property map with <em>map</em>. All
<a href="ntqdatatable.html">TQDataTable</a> and <a href="ntqsqlform.html">TQSqlForm</a> instantiations will use this new map for
inserting and extracting values to and from editors.
<em>TQSqlPropertyMap takes ownership of \a map, and destroys it when it is no longer needed.</em>
<h3 class=fn><a href="ntqvariant.html">TQVariant</a> <a name="property"></a>TQSqlPropertyMap::property ( <a href="ntqwidget.html">TQWidget</a> * widget )
</h3>
Returns the mapped property of <em>widget</em> as a <a href="ntqvariant.html">TQVariant</a>.
<h3 class=fn>void <a name="remove"></a>TQSqlPropertyMap::remove ( const <a href="ntqstring.html">TQString</a> & classname )
</h3>
Removes <em>classname</em> from the map.
<h3 class=fn>void <a name="setProperty"></a>TQSqlPropertyMap::setProperty ( <a href="ntqwidget.html">TQWidget</a> * widget, const <a href="ntqvariant.html">TQVariant</a> & value )<tt> [virtual]</tt>
</h3>
Sets the property of <em>widget</em> to <em>value</em>.
<!-- eof -->
<hr><p>
This file is part of the <a href="index.html">TQt toolkit</a>.
Copyright © 1995-2007
<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
<table width=100% cellspacing=0 border=0><tr>
<td>Copyright © 2007
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
<td align=right><div align=right>TQt 3.3.8</div>
</table></div></address></body>
</html>
|
