doc/html/ntqsqldriverplugin.html


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

<!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/qsqldriverplugin.cpp:45 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>TQSqlDriverPlugin 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&nbsp;Classes</font></a>
 | <a href="mainclasses.html">
<font color="#004faf">Main&nbsp;Classes</font></a>
 | <a href="annotated.html">
<font color="#004faf">Annotated</font></a>
 | <a href="groups.html">
<font color="#004faf">Grouped&nbsp;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>TQSqlDriverPlugin Class Reference</h1>

<p>The TQSqlDriverPlugin class provides an abstract base for custom TQSqlDriver plugins.
<a href="#details">More...</a>
<p><tt>#include &lt;<a href="qsqldriverplugin-h.html">ntqsqldriverplugin.h</a>&gt;</tt>
<p><a href="qsqldriverplugin-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#TQSqlDriverPlugin"><b>TQSqlDriverPlugin</b></a> ()</li>
<li class=fn><a href="#~TQSqlDriverPlugin"><b>~TQSqlDriverPlugin</b></a> ()</li>
<li class=fn>virtual TQStringList <a href="#keys"><b>keys</b></a> () const = 0</li>
<li class=fn>virtual TQSqlDriver * <a href="#create"><b>create</b></a> ( const&nbsp;TQString&nbsp;&amp;&nbsp;key ) = 0</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>


The TQSqlDriverPlugin class provides an abstract base for custom <a href="ntqsqldriver.html">TQSqlDriver</a> plugins.
<p> 

<p> The SQL driver plugin is a simple plugin interface that makes it
easy to create your own SQL driver plugins that can be loaded
dynamically by TQt.
<p> Writing a SQL plugin is achieved by subclassing this base class,
reimplementing the pure virtual functions <a href="#keys">keys</a>() and <a href="#create">create</a>(), and
exporting the class with the <tt>Q_EXPORT_PLUGIN</tt> macro. See the SQL
plugins that come with TQt for example implementations (in the
<tt>plugins/src/sqldrivers</tt> subdirectory of the source
distribution). Read the <a href="plugins-howto.html">plugins
    documentation</a> for more information on plugins.
<p>See also <a href="plugins.html">Plugins</a>.

<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="TQSqlDriverPlugin"></a>TQSqlDriverPlugin::TQSqlDriverPlugin ()
</h3>
Constructs a SQL driver plugin. This is invoked automatically by
the <tt>Q_EXPORT_PLUGIN</tt> macro.

<h3 class=fn><a name="~TQSqlDriverPlugin"></a>TQSqlDriverPlugin::~TQSqlDriverPlugin ()
</h3>
Destroys the SQL driver plugin.
<p> You never have to call this explicitly. TQt destroys a plugin
automatically when it is no longer used.

<h3 class=fn><a href="ntqsqldriver.html">TQSqlDriver</a>&nbsp;* <a name="create"></a>TQSqlDriverPlugin::create ( const&nbsp;<a href="ntqstring.html">TQString</a>&nbsp;&amp;&nbsp;key )<tt> [pure virtual]</tt>
</h3>

<p> Creates and returns a <a href="ntqsqldriver.html">TQSqlDriver</a> object for the driver key <em>key</em>.
The driver key is usually the class name of the required driver.
<p> <p>See also <a href="#keys">keys</a>().

<h3 class=fn><a href="ntqstringlist.html">TQStringList</a> <a name="keys"></a>TQSqlDriverPlugin::keys () const<tt> [pure virtual]</tt>
</h3>

<p> Returns the list of drivers (keys) this plugin supports.
<p> These keys are usually the class names of the custom drivers that
are implemented in the plugin.
<p> <p>See also <a href="#create">create</a>().

<!-- eof -->
<hr><p>
This file is part of the <a href="index.html">TQt toolkit</a>.
Copyright &copy; 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 &copy; 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>