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< 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 < < a href = "qsqldriverplugin-h.html" > ntqsqldriverplugin.h< / a > > < / tt >
< p > < a href = "qsqldriverplugin-members.html" > List of all member functions.< / a >
< h2 > Public Members< / h2 >
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< 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 TQString & key ) = 0< / li >
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< 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 > TQ_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 ()
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Constructs a SQL driver plugin. This is invoked automatically by
the < tt > TQ_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 > * < a name = "create" > < / a > TQSqlDriverPlugin::create ( const < a href = "ntqstring.html" > TQString< / a > & 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 > ().
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