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diff --git a/doc/html/qdatatable.html b/doc/html/qdatatable.html new file mode 100644 index 000000000..f9ad0d09a --- /dev/null +++ b/doc/html/qdatatable.html @@ -0,0 +1,809 @@ +<!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/qdatatable.cpp:130 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>TQDataTable 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>TQDataTable Class Reference<br><small>[<a href="sql.html">sql module</a>]</small></h1> + +<p>The TQDataTable class provides a flexible SQL table widget that supports browsing and editing. +<a href="#details">More...</a> +<p><tt>#include <<a href="qdatatable-h.html">qdatatable.h</a>></tt> +<p>Inherits <a href="qtable.html">TQTable</a>. +<p><a href="qdatatable-members.html">List of all member functions.</a> +<h2>Public Members</h2> +<ul> +<li class=fn><a href="#TQDataTable"><b>TQDataTable</b></a> ( TQWidget * parent = 0, const char * name = 0 )</li> +<li class=fn><a href="#TQDataTable-2"><b>TQDataTable</b></a> ( TQSqlCursor * cursor, bool autoPopulate = FALSE, TQWidget * parent = 0, const char * name = 0 )</li> +<li class=fn><a href="#~TQDataTable"><b>~TQDataTable</b></a> ()</li> +<li class=fn>virtual void <a href="#addColumn"><b>addColumn</b></a> ( const TQString & fieldName, const TQString & label = TQString::null, int width = -1, const TQIconSet & iconset = TQIconSet ( ) )</li> +<li class=fn>virtual void <a href="#removeColumn"><b>removeColumn</b></a> ( uint col )</li> +<li class=fn>virtual void <a href="#setColumn"><b>setColumn</b></a> ( uint col, const TQString & fieldName, const TQString & label = TQString::null, int width = -1, const TQIconSet & iconset = TQIconSet ( ) )</li> +<li class=fn>TQString <a href="#nullText"><b>nullText</b></a> () const</li> +<li class=fn>TQString <a href="#trueText"><b>trueText</b></a> () const</li> +<li class=fn>TQString <a href="#falseText"><b>falseText</b></a> () const</li> +<li class=fn>DateFormat <a href="#dateFormat"><b>dateFormat</b></a> () const</li> +<li class=fn>bool <a href="#confirmEdits"><b>confirmEdits</b></a> () const</li> +<li class=fn>bool <a href="#confirmInsert"><b>confirmInsert</b></a> () const</li> +<li class=fn>bool <a href="#confirmUpdate"><b>confirmUpdate</b></a> () const</li> +<li class=fn>bool <a href="#confirmDelete"><b>confirmDelete</b></a> () const</li> +<li class=fn>bool <a href="#confirmCancels"><b>confirmCancels</b></a> () const</li> +<li class=fn>bool <a href="#autoDelete"><b>autoDelete</b></a> () const</li> +<li class=fn>bool <a href="#autoEdit"><b>autoEdit</b></a> () const</li> +<li class=fn>TQString <a href="#filter"><b>filter</b></a> () const</li> +<li class=fn>TQStringList <a href="#sort"><b>sort</b></a> () const</li> +<li class=fn>virtual void <a href="#setSqlCursor"><b>setSqlCursor</b></a> ( TQSqlCursor * cursor = 0, bool autoPopulate = FALSE, bool autoDelete = FALSE )</li> +<li class=fn>TQSqlCursor * <a href="#sqlCursor"><b>sqlCursor</b></a> () const</li> +<li class=fn>virtual void <a href="#setNullText"><b>setNullText</b></a> ( const TQString & nullText )</li> +<li class=fn>virtual void <a href="#setTrueText"><b>setTrueText</b></a> ( const TQString & trueText )</li> +<li class=fn>virtual void <a href="#setFalseText"><b>setFalseText</b></a> ( const TQString & falseText )</li> +<li class=fn>virtual void <a href="#setDateFormat"><b>setDateFormat</b></a> ( const DateFormat f )</li> +<li class=fn>virtual void <a href="#setConfirmEdits"><b>setConfirmEdits</b></a> ( bool confirm )</li> +<li class=fn>virtual void <a href="#setConfirmInsert"><b>setConfirmInsert</b></a> ( bool confirm )</li> +<li class=fn>virtual void <a href="#setConfirmUpdate"><b>setConfirmUpdate</b></a> ( bool confirm )</li> +<li class=fn>virtual void <a href="#setConfirmDelete"><b>setConfirmDelete</b></a> ( bool confirm )</li> +<li class=fn>virtual void <a href="#setConfirmCancels"><b>setConfirmCancels</b></a> ( bool confirm )</li> +<li class=fn>virtual void <a href="#setAutoDelete"><b>setAutoDelete</b></a> ( bool enable )</li> +<li class=fn>virtual void <a href="#setAutoEdit"><b>setAutoEdit</b></a> ( bool autoEdit )</li> +<li class=fn>virtual void <a href="#setFilter"><b>setFilter</b></a> ( const TQString & filter )</li> +<li class=fn>virtual void <a href="#setSort"><b>setSort</b></a> ( const TQStringList & sort )</li> +<li class=fn>virtual void <a href="#setSort-2"><b>setSort</b></a> ( const TQSqlIndex & sort )</li> +<li class=fn>enum <a href="#Refresh-enum"><b>Refresh</b></a> { RefreshData = 1, RefreshColumns = 2, RefreshAll = 3 }</li> +<li class=fn>void <a href="#refresh-2"><b>refresh</b></a> ( Refresh mode )</li> +<li class=fn>virtual void <a href="#sortColumn"><b>sortColumn</b></a> ( int col, bool ascending = TRUE, bool wholeRows = FALSE )</li> +<li class=fn>virtual TQString <a href="#text"><b>text</b></a> ( int row, int col ) const</li> +<li class=fn>TQVariant <a href="#value"><b>value</b></a> ( int row, int col ) const</li> +<li class=fn>TQSqlRecord * <a href="#currentRecord"><b>currentRecord</b></a> () const</li> +<li class=fn>void <a href="#installEditorFactory"><b>installEditorFactory</b></a> ( TQSqlEditorFactory * f )</li> +<li class=fn>void <a href="#installPropertyMap"><b>installPropertyMap</b></a> ( TQSqlPropertyMap * m )</li> +<li class=fn>virtual int <a href="#numCols"><b>numCols</b></a> () const</li> +<li class=fn>virtual int <a href="#numRows"><b>numRows</b></a> () const</li> +</ul> +<h2>Public Slots</h2> +<ul> +<li class=fn>virtual void <a href="#find"><b>find</b></a> ( const TQString & str, bool caseSensitive, bool backwards )</li> +<li class=fn>virtual void <a href="#sortAscending"><b>sortAscending</b></a> ( int col )</li> +<li class=fn>virtual void <a href="#sortDescending"><b>sortDescending</b></a> ( int col )</li> +<li class=fn>virtual void <a href="#refresh"><b>refresh</b></a> ()</li> +<li class=fn>virtual void <a href="#setColumnWidth"><b>setColumnWidth</b></a> ( int col, int w )</li> +<li class=fn>virtual void <a href="#adjustColumn"><b>adjustColumn</b></a> ( int col )</li> +</ul> +<h2>Signals</h2> +<ul> +<li class=fn>void <a href="#currentChanged"><b>currentChanged</b></a> ( TQSqlRecord * record )</li> +<li class=fn>void <a href="#primeInsert"><b>primeInsert</b></a> ( TQSqlRecord * buf )</li> +<li class=fn>void <a href="#primeUpdate"><b>primeUpdate</b></a> ( TQSqlRecord * buf )</li> +<li class=fn>void <a href="#primeDelete"><b>primeDelete</b></a> ( TQSqlRecord * buf )</li> +<li class=fn>void <a href="#beforeInsert"><b>beforeInsert</b></a> ( TQSqlRecord * buf )</li> +<li class=fn>void <a href="#beforeUpdate"><b>beforeUpdate</b></a> ( TQSqlRecord * buf )</li> +<li class=fn>void <a href="#beforeDelete"><b>beforeDelete</b></a> ( TQSqlRecord * buf )</li> +<li class=fn>void <a href="#cursorChanged"><b>cursorChanged</b></a> ( TQSql::Op mode )</li> +</ul> +<h2>Properties</h2> +<ul> +<li class=fn>bool <a href="#autoEdit-prop"><b>autoEdit</b></a> - whether the data table automatically applies edits</li> +<li class=fn>bool <a href="#confirmCancels-prop"><b>confirmCancels</b></a> - whether the data table confirms cancel operations</li> +<li class=fn>bool <a href="#confirmDelete-prop"><b>confirmDelete</b></a> - whether the data table confirms delete operations</li> +<li class=fn>bool <a href="#confirmEdits-prop"><b>confirmEdits</b></a> - whether the data table confirms edit operations</li> +<li class=fn>bool <a href="#confirmInsert-prop"><b>confirmInsert</b></a> - whether the data table confirms insert operations</li> +<li class=fn>bool <a href="#confirmUpdate-prop"><b>confirmUpdate</b></a> - whether the data table confirms update operations</li> +<li class=fn>DateFormat <a href="#dateFormat-prop"><b>dateFormat</b></a> - the format used for displaying date/time values</li> +<li class=fn>TQString <a href="#falseText-prop"><b>falseText</b></a> - the text used to represent false values</li> +<li class=fn>TQString <a href="#filter-prop"><b>filter</b></a> - the data filter for the data table</li> +<li class=fn>TQString <a href="#nullText-prop"><b>nullText</b></a> - the text used to represent NULL values</li> +<li class=fn>int <a href="#numCols-prop"><b>numCols</b></a> - the number of columns in the table <em>(read only)</em></li> +<li class=fn>int <a href="#numRows-prop"><b>numRows</b></a> - the number of rows in the table <em>(read only)</em></li> +<li class=fn>TQStringList <a href="#sort-prop"><b>sort</b></a> - the data table's sort</li> +<li class=fn>TQString <a href="#trueText-prop"><b>trueText</b></a> - the text used to represent true values</li> +</ul> +<h2>Protected Members</h2> +<ul> +<li class=fn>virtual bool <a href="#insertCurrent"><b>insertCurrent</b></a> ()</li> +<li class=fn>virtual bool <a href="#updateCurrent"><b>updateCurrent</b></a> ()</li> +<li class=fn>virtual bool <a href="#deleteCurrent"><b>deleteCurrent</b></a> ()</li> +<li class=fn>virtual TQSql::Confirm <a href="#confirmEdit"><b>confirmEdit</b></a> ( TQSql::Op m )</li> +<li class=fn>virtual TQSql::Confirm <a href="#confirmCancel"><b>confirmCancel</b></a> ( TQSql::Op m )</li> +<li class=fn>virtual void <a href="#handleError"><b>handleError</b></a> ( const TQSqlError & e )</li> +<li class=fn>virtual bool <a href="#beginInsert"><b>beginInsert</b></a> ()</li> +<li class=fn>virtual TQWidget * <a href="#beginUpdate"><b>beginUpdate</b></a> ( int row, int col, bool replace )</li> +<li class=fn>int <a href="#indexOf"><b>indexOf</b></a> ( uint i ) const</li> +<li class=fn>void <a href="#reset"><b>reset</b></a> ()</li> +<li class=fn>void <a href="#setSize"><b>setSize</b></a> ( TQSqlCursor * sql )</li> +<li class=fn>virtual void <a href="#paintField"><b>paintField</b></a> ( TQPainter * p, const TQSqlField * field, const TQRect & cr, bool selected )</li> +<li class=fn>virtual int <a href="#fieldAlignment"><b>fieldAlignment</b></a> ( const TQSqlField * field )</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> + + +The TQDataTable class provides a flexible SQL table widget that supports browsing and editing. +<p> + + +<p> TQDataTable supports various functions for presenting and editing +SQL data from a <a href="qsqlcursor.html">TQSqlCursor</a> in a table. +<p> If you want a to present your data in a form use <a href="qdatabrowser.html">TQDataBrowser</a>, or +for read-only forms, <a href="qdataview.html">TQDataView</a>. +<p> When displaying data, TQDataTable only retrieves data for visible +rows. If the driver supports the 'query size' property the +TQDataTable will have the correct number of rows and the vertical +scrollbar will accurately reflect the number of rows displayed in +proportion to the number of rows in the dataset. If the driver +does not support the 'query size' property, rows are dynamically +fetched from the database on an as-needed basis with the scrollbar +becoming more accurate as the user scrolls down through the +records. This allows extremely large queries to be displayed as +tquickly as possible, with minimum memory usage. +<p> TQDataTable inherits <a href="qtable.html">TQTable</a>'s API and extends it with functions to +sort and filter the data and sort columns. See <a href="#setSqlCursor">setSqlCursor</a>(), +<a href="#setFilter">setFilter</a>(), <a href="#setSort">setSort</a>(), <a href="qtable.html#setSorting">setSorting</a>(), <a href="#sortColumn">sortColumn</a>() and <a href="#refresh">refresh</a>(). +<p> When displaying editable cursors, cell editing will be enabled. +(For more information on editable cursors, see <a href="qsqlcursor.html">TQSqlCursor</a>). +TQDataTable can be used to modify existing data and to add new +records. When a user makes changes to a field in the table, the +cursor's edit buffer is used. The table will not send changes in +the edit buffer to the database until the user moves to a +different record in the grid or presses Enter. Cell editing is +initiated by pressing F2 (or right clicking and then clicking the +appropriate popup menu item) and canceled by pressing Esc. If +there is a problem updating or adding data, errors are handled +automatically (see <a href="#handleError">handleError</a>() to change this behavior). Note +that if <a href="#autoEdit">autoEdit</a>() is FALSE navigating to another record will +cancel the insert or update. +<p> The user can be asked to confirm all edits with <a href="#setConfirmEdits">setConfirmEdits</a>(). +For more precise control use <a href="#setConfirmInsert">setConfirmInsert</a>(), +<a href="#setConfirmUpdate">setConfirmUpdate</a>(), <a href="#setConfirmDelete">setConfirmDelete</a>() and <a href="#setConfirmCancels">setConfirmCancels</a>(). +Use <a href="#setAutoEdit">setAutoEdit</a>() to control the behaviour of the table when the +user edits a record and then navigates. (Note that <a href="#setAutoDelete">setAutoDelete</a>() +is unrelated; it is used to set whether the <a href="qsqlcursor.html">TQSqlCursor</a> is deleted +when the table is deleted.) +<p> Since the data table can perform edits, it must be able to +uniquely identify every record so that edits are correctly +applied. Because of this the underlying cursor must have a valid +primary index to ensure that a unique record is inserted, updated +or deleted within the database otherwise the database may be +changed to an inconsistent state. +<p> TQDataTable creates editors using the default <a href="qsqleditorfactory.html">TQSqlEditorFactory</a>. +Different editor factories can be used by calling +<a href="#installEditorFactory">installEditorFactory</a>(). A property map is used to map between the +cell's value and the editor. You can use your own property map +with <a href="#installPropertyMap">installPropertyMap</a>(). +<p> The contents of a cell is available as a <a href="qstring.html">TQString</a> with <a href="#text">text</a>() or as +a <a href="qvariant.html">TQVariant</a> with <a href="#value">value</a>(). The current record is returned by +<a href="#currentRecord">currentRecord</a>(). Use the <a href="#find">find</a>() function to search for a string in +the table. +<p> Editing actions can be applied programatically. For example, the +<a href="#insertCurrent">insertCurrent</a>() function reads the fields from the current record +into the cursor and performs the insert. The <a href="#updateCurrent">updateCurrent</a>() and +<a href="#deleteCurrent">deleteCurrent</a>() functions perform similarly to update and delete +the current record respectively. +<p> Columns in the table can be created automatically based on the +cursor (see <a href="#setSqlCursor">setSqlCursor</a>()). Columns can be manipulated manually +using <a href="#addColumn">addColumn</a>(), <a href="#removeColumn">removeColumn</a>() and <a href="#setColumn">setColumn</a>(). +<p> The table automatically copies many of the properties of the +cursor to format the display of data within cells (alignment, +visibility, etc.). The cursor can be changed with setSqlCursor(). +The filter (see <a href="#setFilter">setFilter</a>()) and sort defined within the table are +used instead of the filter and sort set on the cursor. For sorting +options see <a href="#setSort">setSort</a>(), <a href="#sortColumn">sortColumn</a>(), <a href="#sortAscending">sortAscending</a>() and +<a href="#sortDescending">sortDescending</a>(). Note that sorting operations will not behave as +expected if you are using a <a href="qsqlselectcursor.html">TQSqlSelectCursor</a> because it uses +user-defined SQL queries to obtain data. +<p> The text used to represent NULL, TRUE and FALSE values can be +changed with <a href="#setNullText">setNullText</a>(), <a href="#setTrueText">setTrueText</a>() and <a href="#setFalseText">setFalseText</a>() +respectively. You can change the appearance of cells by +reimplementing <a href="#paintField">paintField</a>(). +<p> Whenever a new row is selected in the table the <a href="#currentChanged">currentChanged</a>() +signal is emitted. The <a href="#primeInsert">primeInsert</a>() signal is emitted when an +insert is initiated. The <a href="#primeUpdate">primeUpdate</a>() and <a href="#primeDelete">primeDelete</a>() signals +are emitted when update and deletion are initiated respectively. +Just before the database is updated a signal is emitted; +<a href="#beforeInsert">beforeInsert</a>(), <a href="#beforeUpdate">beforeUpdate</a>() or <a href="#beforeDelete">beforeDelete</a>() as appropriate. +<p> <p>See also <a href="database.html">Database Classes</a>. + +<hr><h2>Member Type Documentation</h2> +<h3 class=fn><a name="Refresh-enum"></a>TQDataTable::Refresh</h3> + +<p> This enum describes the refresh options. +<ul> +<li><tt>TQDataTable::RefreshData</tt> - refresh the data, i.e. read it from the database +<li><tt>TQDataTable::RefreshColumns</tt> - refresh the list of fields, e.g. the column headings +<li><tt>TQDataTable::RefreshAll</tt> - refresh both the data and the list of fields +</ul> +<hr><h2>Member Function Documentation</h2> +<h3 class=fn><a name="TQDataTable"></a>TQDataTable::TQDataTable ( <a href="qwidget.html">TQWidget</a> * parent = 0, const char * name = 0 ) +</h3> +Constructs a data table which is a child of <em>parent</em>, called +name <em>name</em>. + +<h3 class=fn><a name="TQDataTable-2"></a>TQDataTable::TQDataTable ( <a href="qsqlcursor.html">TQSqlCursor</a> * cursor, bool autoPopulate = FALSE, <a href="qwidget.html">TQWidget</a> * parent = 0, const char * name = 0 ) +</h3> +Constructs a data table which is a child of <em>parent</em>, called name +<em>name</em> using the cursor <em>cursor</em>. +<p> If <em>autoPopulate</em> is TRUE (the default is FALSE), columns are +automatically created based upon the fields in the <em>cursor</em> +record. Note that <em>autoPopulate</em> only governs the creation of +columns; to load the cursor's data into the table use <a href="#refresh">refresh</a>(). +<p> If the <em>cursor</em> is read-only, the table also becomes read-only. +In addition, the table adopts the cursor's driver's definition for +representing NULL values as strings. + +<h3 class=fn><a name="~TQDataTable"></a>TQDataTable::~TQDataTable () +</h3> +Destroys the object and frees any allocated resources. + +<h3 class=fn>void <a name="addColumn"></a>TQDataTable::addColumn ( const <a href="qstring.html">TQString</a> & fieldName, const <a href="qstring.html">TQString</a> & label = TQString::null, int width = -1, const <a href="qiconset.html">TQIconSet</a> & iconset = TQIconSet ( ) )<tt> [virtual]</tt> +</h3> +Adds the next column to be displayed using the field <em>fieldName</em>, +column label <em>label</em>, width <em>width</em> and iconset <em>iconset</em>. +<p> If <em>label</em> is specified, it is used as the column's header label, +otherwise the field's display label is used when <a href="#setSqlCursor">setSqlCursor</a>() is +called. The <em>iconset</em> is used to set the icon used by the column +header; by default there is no icon. +<p> <p>See also <a href="#setSqlCursor">setSqlCursor</a>() and <a href="#refresh">refresh</a>(). + +<p>Examples: <a href="sql.html#x2255">sql/overview/subclass1/main.cpp</a>, <a href="sql.html#x2258">sql/overview/subclass3/main.cpp</a>, <a href="sql.html#x2214">sql/overview/table2/main.cpp</a>, and <a href="sqltable-example.html#x2451">sql/sqltable/main.cpp</a>. +<h3 class=fn>void <a name="adjustColumn"></a>TQDataTable::adjustColumn ( int col )<tt> [virtual slot]</tt> +</h3> +Resizes column <em>col</em> so that the column width is wide enough to +display the widest item the column contains (including the column +label). If the table's <a href="qsqlcursor.html">TQSqlCursor</a> is not currently active, the +cursor will be refreshed before the column width is calculated. Be +aware that this function may be slow on tables that contain large +result sets. + +<p>Reimplemented from <a href="qtable.html#adjustColumn">TQTable</a>. +<h3 class=fn>bool <a name="autoDelete"></a>TQDataTable::autoDelete () const +</h3> +Returns TRUE if the table will automatically delete the cursor +specified by <a href="#setSqlCursor">setSqlCursor</a>(); otherwise returns FALSE. + +<h3 class=fn>bool <a name="autoEdit"></a>TQDataTable::autoEdit () const +</h3><p>Returns TRUE if the data table automatically applies edits; otherwise returns FALSE. +See the <a href="qdatatable.html#autoEdit-prop">"autoEdit"</a> property for details. +<h3 class=fn>void <a name="beforeDelete"></a>TQDataTable::beforeDelete ( <a href="qsqlrecord.html">TQSqlRecord</a> * buf )<tt> [signal]</tt> +</h3> + +<p> This signal is emitted just before the currently selected record +is deleted from the database. The <em>buf</em> parameter points to the +edit buffer being deleted. Connect to this signal to, for example, +copy some of the fields for later use. + +<h3 class=fn>void <a name="beforeInsert"></a>TQDataTable::beforeInsert ( <a href="qsqlrecord.html">TQSqlRecord</a> * buf )<tt> [signal]</tt> +</h3> + +<p> This signal is emitted just before the cursor's edit buffer is +inserted into the database. The <em>buf</em> parameter points to the +edit buffer being inserted. Connect to this signal to, for +example, populate a key field with a unique sequence number. + +<h3 class=fn>void <a name="beforeUpdate"></a>TQDataTable::beforeUpdate ( <a href="qsqlrecord.html">TQSqlRecord</a> * buf )<tt> [signal]</tt> +</h3> + +<p> This signal is emitted just before the cursor's edit buffer is +updated in the database. The <em>buf</em> parameter points to the edit +buffer being updated. Connect to this signal when you want to +transform the user's data behind-the-scenes. + +<h3 class=fn>bool <a name="beginInsert"></a>TQDataTable::beginInsert ()<tt> [virtual protected]</tt> +</h3> +Protected virtual function called when editing is about to begin +on a new record. If the table is read-only, or if there's no +cursor or the cursor does not allow inserts, nothing happens. +<p> Editing takes place using the cursor's edit buffer(see +<a href="qsqlcursor.html#editBuffer">TQSqlCursor::editBuffer</a>()). +<p> When editing begins, a new row is created in the table marked with +an asterisk '*' in the row's vertical header column, i.e. at the +left of the row. + +<h3 class=fn><a href="qwidget.html">TQWidget</a> * <a name="beginUpdate"></a>TQDataTable::beginUpdate ( int row, int col, bool replace )<tt> [virtual protected]</tt> +</h3> +Protected virtual function called when editing is about to begin +on an existing row. If the table is read-only, or if there's no +cursor, nothing happens. +<p> Editing takes place using the cursor's edit buffer (see +<a href="qsqlcursor.html#editBuffer">TQSqlCursor::editBuffer</a>()). +<p> <em>row</em> and <em>col</em> refer to the row and column in the TQDataTable. +<p> (<em>replace</em> is provided for reimplementors and reflects the API of +<a href="qtable.html#beginEdit">TQTable::beginEdit</a>().) + +<h3 class=fn><a href="qsql.html#Confirm-enum">TQSql::Confirm</a> <a name="confirmCancel"></a>TQDataTable::confirmCancel ( <a href="qsql.html#Op-enum">TQSql::Op</a> m )<tt> [virtual protected]</tt> +</h3> +Protected virtual function which returns a confirmation for +cancelling an edit mode of <em>m</em>. Derived classes can reimplement +this function to provide their own cancel dialog. The default +implementation uses a message box which prompts the user to +confirm the cancel. + +<h3 class=fn>bool <a name="confirmCancels"></a>TQDataTable::confirmCancels () const +</h3><p>Returns TRUE if the data table confirms cancel operations; otherwise returns FALSE. +See the <a href="qdatatable.html#confirmCancels-prop">"confirmCancels"</a> property for details. +<h3 class=fn>bool <a name="confirmDelete"></a>TQDataTable::confirmDelete () const +</h3><p>Returns TRUE if the data table confirms delete operations; otherwise returns FALSE. +See the <a href="qdatatable.html#confirmDelete-prop">"confirmDelete"</a> property for details. +<h3 class=fn><a href="qsql.html#Confirm-enum">TQSql::Confirm</a> <a name="confirmEdit"></a>TQDataTable::confirmEdit ( <a href="qsql.html#Op-enum">TQSql::Op</a> m )<tt> [virtual protected]</tt> +</h3> +Protected virtual function which returns a confirmation for an +edit of mode <em>m</em>. Derived classes can reimplement this function +to provide their own confirmation dialog. The default +implementation uses a message box which prompts the user to +confirm the edit action. + +<h3 class=fn>bool <a name="confirmEdits"></a>TQDataTable::confirmEdits () const +</h3><p>Returns TRUE if the data table confirms edit operations; otherwise returns FALSE. +See the <a href="qdatatable.html#confirmEdits-prop">"confirmEdits"</a> property for details. +<h3 class=fn>bool <a name="confirmInsert"></a>TQDataTable::confirmInsert () const +</h3><p>Returns TRUE if the data table confirms insert operations; otherwise returns FALSE. +See the <a href="qdatatable.html#confirmInsert-prop">"confirmInsert"</a> property for details. +<h3 class=fn>bool <a name="confirmUpdate"></a>TQDataTable::confirmUpdate () const +</h3><p>Returns TRUE if the data table confirms update operations; otherwise returns FALSE. +See the <a href="qdatatable.html#confirmUpdate-prop">"confirmUpdate"</a> property for details. +<h3 class=fn>void <a name="currentChanged"></a>TQDataTable::currentChanged ( <a href="qsqlrecord.html">TQSqlRecord</a> * record )<tt> [signal]</tt> +</h3> + +<p> This signal is emitted whenever a new row is selected in the +table. The <em>record</em> parameter points to the contents of the newly +selected record. + +<h3 class=fn><a href="qsqlrecord.html">TQSqlRecord</a> * <a name="currentRecord"></a>TQDataTable::currentRecord () const +</h3> +Returns the currently selected record, or 0 if there is no current +selection. The table owns the pointer, so do <em>not</em> delete it or +otherwise modify it or the cursor it points to. + +<h3 class=fn>void <a name="cursorChanged"></a>TQDataTable::cursorChanged ( <a href="qsql.html#Op-enum">TQSql::Op</a> mode )<tt> [signal]</tt> +</h3> + +<p> This signal is emitted whenever the cursor record was changed due +to an edit. The <em>mode</em> parameter is the type of edit that just +took place. + +<h3 class=fn><a href="qt.html#DateFormat-enum">DateFormat</a> <a name="dateFormat"></a>TQDataTable::dateFormat () const +</h3><p>Returns the format used for displaying date/time values. +See the <a href="qdatatable.html#dateFormat-prop">"dateFormat"</a> property for details. +<h3 class=fn>bool <a name="deleteCurrent"></a>TQDataTable::deleteCurrent ()<tt> [virtual protected]</tt> +</h3> +For an editable table, issues a delete on the current cursor's +primary index using the values of the currently selected row. If +there is no current cursor or there is no current selection, +nothing happens. If <a href="#confirmEdits">confirmEdits</a>() or <a href="#confirmDelete">confirmDelete</a>() is TRUE, +<a href="#confirmEdit">confirmEdit</a>() is called to confirm the delete. Returns TRUE if the +delete succeeded; otherwise FALSE. +<p> The underlying cursor must have a valid primary index to ensure +that a unique record is deleted within the database otherwise the +database may be changed to an inconsistent state. + +<h3 class=fn><a href="qstring.html">TQString</a> <a name="falseText"></a>TQDataTable::falseText () const +</h3><p>Returns the text used to represent false values. +See the <a href="qdatatable.html#falseText-prop">"falseText"</a> property for details. +<h3 class=fn>int <a name="fieldAlignment"></a>TQDataTable::fieldAlignment ( const <a href="qsqlfield.html">TQSqlField</a> * field )<tt> [virtual protected]</tt> +</h3> +Returns the alignment for <em>field</em>. + +<h3 class=fn><a href="qstring.html">TQString</a> <a name="filter"></a>TQDataTable::filter () const +</h3><p>Returns the data filter for the data table. +See the <a href="qdatatable.html#filter-prop">"filter"</a> property for details. +<h3 class=fn>void <a name="find"></a>TQDataTable::find ( const <a href="qstring.html">TQString</a> & str, bool caseSensitive, bool backwards )<tt> [virtual slot]</tt> +</h3> +Searches the current cursor for a cell containing the string <em>str</em> starting at the current cell and working forwards (or +backwards if <em>backwards</em> is TRUE). If the string is found, the +cell containing the string is set as the current cell. If <em>caseSensitive</em> is FALSE the case of <em>str</em> will be ignored. +<p> The search will wrap, i.e. if the first (or if backwards is TRUE, +last) cell is reached without finding <em>str</em> the search will +continue until it reaches the starting cell. If <em>str</em> is not +found the search will fail and the current cell will remain +unchanged. + +<h3 class=fn>void <a name="handleError"></a>TQDataTable::handleError ( const <a href="qsqlerror.html">TQSqlError</a> & e )<tt> [virtual protected]</tt> +</h3> +Protected virtual function which is called when an error <em>e</em> has +occurred on the current <a href="qwidget.html#cursor">cursor</a>(). The default implementation +displays a warning message to the user with information about the +error. + +<h3 class=fn>int <a name="indexOf"></a>TQDataTable::indexOf ( uint i ) const<tt> [protected]</tt> +</h3> +Returns the index of the field within the current SQL query that +is displayed in column <em>i</em>. + +<h3 class=fn>bool <a name="insertCurrent"></a>TQDataTable::insertCurrent ()<tt> [virtual protected]</tt> +</h3> +For an editable table, issues an insert on the current cursor +using the values in the cursor's edit buffer. If there is no +current cursor or there is no current "insert" row, nothing +happens. If <a href="#confirmEdits">confirmEdits</a>() or <a href="#confirmInsert">confirmInsert</a>() is TRUE, +<a href="#confirmEdit">confirmEdit</a>() is called to confirm the insert. Returns TRUE if the +insert succeeded; otherwise returns FALSE. +<p> The underlying cursor must have a valid primary index to ensure +that a unique record is inserted within the database otherwise the +database may be changed to an inconsistent state. + +<h3 class=fn>void <a name="installEditorFactory"></a>TQDataTable::installEditorFactory ( <a href="qsqleditorfactory.html">TQSqlEditorFactory</a> * f ) +</h3> +Installs a new SQL editor factory <em>f</em>. This enables the user to +create and instantiate their own editors for use in cell editing. +Note that TQDataTable takes ownership of this pointer, and will +delete it when it is no longer needed or when +<a href="#installEditorFactory">installEditorFactory</a>() is called again. +<p> <p>See also <a href="qsqleditorfactory.html">TQSqlEditorFactory</a>. + +<h3 class=fn>void <a name="installPropertyMap"></a>TQDataTable::installPropertyMap ( <a href="qsqlpropertymap.html">TQSqlPropertyMap</a> * m ) +</h3> +Installs a new property map <em>m</em>. This enables the user to create +and instantiate their own property maps for use in cell editing. +Note that TQDataTable takes ownership of this pointer, and will +delete it when it is no longer needed or when installPropertMap() +is called again. +<p> <p>See also <a href="qsqlpropertymap.html">TQSqlPropertyMap</a>. + +<h3 class=fn><a href="qstring.html">TQString</a> <a name="nullText"></a>TQDataTable::nullText () const +</h3><p>Returns the text used to represent NULL values. +See the <a href="qdatatable.html#nullText-prop">"nullText"</a> property for details. +<h3 class=fn>int <a name="numCols"></a>TQDataTable::numCols () const<tt> [virtual]</tt> +</h3><p>Returns the number of columns in the table. +See the <a href="qdatatable.html#numCols-prop">"numCols"</a> property for details. +<p>Reimplemented from <a href="qtable.html#numCols">TQTable</a>. +<h3 class=fn>int <a name="numRows"></a>TQDataTable::numRows () const<tt> [virtual]</tt> +</h3><p>Returns the number of rows in the table. +See the <a href="qdatatable.html#numRows-prop">"numRows"</a> property for details. +<p>Reimplemented from <a href="qtable.html#numRows">TQTable</a>. +<h3 class=fn>void <a name="paintField"></a>TQDataTable::paintField ( <a href="qpainter.html">TQPainter</a> * p, const <a href="qsqlfield.html">TQSqlField</a> * field, const <a href="qrect.html">TQRect</a> & cr, bool selected )<tt> [virtual protected]</tt> +</h3> +Paints the <em>field</em> on the painter <em>p</em>. The painter has already +been translated to the appropriate cell's origin where the <em>field</em> is to be rendered. <em>cr</em> describes the cell coordinates in +the content coordinate system. The <em>selected</em> parameter is +ignored. +<p> If you want to draw custom field content you must reimplement +<a href="#paintField">paintField</a>() to do the custom drawing. The default implementation +renders the <em>field</em> value as text. If the field is NULL, +<a href="#nullText">nullText</a>() is displayed in the cell. If the field is Boolean, +<a href="#trueText">trueText</a>() or <a href="#falseText">falseText</a>() is displayed as appropriate. + +<p>Example: <a href="sql.html#x2245">sql/overview/table4/main.cpp</a>. +<h3 class=fn>void <a name="primeDelete"></a>TQDataTable::primeDelete ( <a href="qsqlrecord.html">TQSqlRecord</a> * buf )<tt> [signal]</tt> +</h3> + +<p> This signal is emitted after the cursor is primed for delete by +the table, when a delete action is beginning on the table. The <em>buf</em> parameter points to the edit buffer being deleted. Connect to +this signal in order to, for example, record auditing information +on deletions. + +<h3 class=fn>void <a name="primeInsert"></a>TQDataTable::primeInsert ( <a href="qsqlrecord.html">TQSqlRecord</a> * buf )<tt> [signal]</tt> +</h3> + +<p> This signal is emitted after the cursor is primed for insert by +the table, when an insert action is beginning on the table. The <em>buf</em> parameter points to the edit buffer being inserted. Connect to +this signal in order to, for example, <a href="primes.html#prime">prime</a> the record buffer with +default data values. + +<h3 class=fn>void <a name="primeUpdate"></a>TQDataTable::primeUpdate ( <a href="qsqlrecord.html">TQSqlRecord</a> * buf )<tt> [signal]</tt> +</h3> + +<p> This signal is emitted after the cursor is primed for update by +the table, when an update action is beginning on the table. The <em>buf</em> parameter points to the edit buffer being updated. Connect to +this signal in order to, for example, provide some visual feedback +that the user is in 'edit mode'. + +<h3 class=fn>void <a name="refresh"></a>TQDataTable::refresh ()<tt> [virtual slot]</tt> +</h3> +Refreshes the table. The cursor is refreshed using the current +filter, the current sort, and the currently defined columns. +Equivalent to calling <a href="#refresh">refresh</a>( TQDataTable::RefreshData ). + +<p>Examples: <a href="sql.html#x2256">sql/overview/subclass1/main.cpp</a>, <a href="sql.html#x2211">sql/overview/table1/main.cpp</a>, <a href="sql.html#x2215">sql/overview/table2/main.cpp</a>, and <a href="sqltable-example.html#x2452">sql/sqltable/main.cpp</a>. +<h3 class=fn>void <a name="refresh-2"></a>TQDataTable::refresh ( <a href="qdatatable.html#Refresh-enum">Refresh</a> mode ) +</h3> +This is an overloaded member function, provided for convenience. It behaves essentially like the above function. +<p> Refreshes the table. If there is no currently defined cursor (see +<a href="#setSqlCursor">setSqlCursor</a>()), nothing happens. The <em>mode</em> parameter determines +which type of refresh will take place. +<p> <p>See also <a href="#Refresh-enum">Refresh</a>, <a href="#setSqlCursor">setSqlCursor</a>(), and <a href="#addColumn">addColumn</a>(). + +<h3 class=fn>void <a name="removeColumn"></a>TQDataTable::removeColumn ( uint col )<tt> [virtual]</tt> +</h3> +Removes column <em>col</em> from the list of columns to be displayed. If +<em>col</em> does not exist, nothing happens. +<p> <p>See also <a href="qsqlfield.html">TQSqlField</a>. + +<h3 class=fn>void <a name="reset"></a>TQDataTable::reset ()<tt> [protected]</tt> +</h3> +Resets the table so that it displays no data. +<p> <p>See also <a href="#setSqlCursor">setSqlCursor</a>(). + +<h3 class=fn>void <a name="setAutoDelete"></a>TQDataTable::setAutoDelete ( bool enable )<tt> [virtual]</tt> +</h3> +Sets the cursor auto-delete flag to <em>enable</em>. If <em>enable</em> is +TRUE, the table will automatically delete the cursor specified by +<a href="#setSqlCursor">setSqlCursor</a>(). If <em>enable</em> is FALSE (the default), the cursor +will not be deleted. + +<h3 class=fn>void <a name="setAutoEdit"></a>TQDataTable::setAutoEdit ( bool autoEdit )<tt> [virtual]</tt> +</h3><p>Sets whether the data table automatically applies edits to <em>autoEdit</em>. +See the <a href="qdatatable.html#autoEdit-prop">"autoEdit"</a> property for details. +<h3 class=fn>void <a name="setColumn"></a>TQDataTable::setColumn ( uint col, const <a href="qstring.html">TQString</a> & fieldName, const <a href="qstring.html">TQString</a> & label = TQString::null, int width = -1, const <a href="qiconset.html">TQIconSet</a> & iconset = TQIconSet ( ) )<tt> [virtual]</tt> +</h3> +Sets the <em>col</em> column to display using the field <em>fieldName</em>, +column label <em>label</em>, width <em>width</em> and iconset <em>iconset</em>. +<p> If <em>label</em> is specified, it is used as the column's header label, +otherwise the field's display label is used when <a href="#setSqlCursor">setSqlCursor</a>() is +called. The <em>iconset</em> is used to set the icon used by the column +header; by default there is no icon. +<p> <p>See also <a href="#setSqlCursor">setSqlCursor</a>() and <a href="#refresh">refresh</a>(). + +<h3 class=fn>void <a name="setColumnWidth"></a>TQDataTable::setColumnWidth ( int col, int w )<tt> [virtual slot]</tt> +</h3> +Sets the column <em>col</em> to the width <em>w</em>. Note that unlike <a href="qtable.html">TQTable</a> +the TQDataTable is not immediately redrawn, you must call +<a href="#refresh">refresh</a>(TQDataTable::RefreshColumns) +yourself. +<p> <p>See also <a href="#refresh">refresh</a>(). + +<p>Reimplemented from <a href="qtable.html#setColumnWidth">TQTable</a>. +<h3 class=fn>void <a name="setConfirmCancels"></a>TQDataTable::setConfirmCancels ( bool confirm )<tt> [virtual]</tt> +</h3><p>Sets whether the data table confirms cancel operations to <em>confirm</em>. +See the <a href="qdatatable.html#confirmCancels-prop">"confirmCancels"</a> property for details. +<h3 class=fn>void <a name="setConfirmDelete"></a>TQDataTable::setConfirmDelete ( bool confirm )<tt> [virtual]</tt> +</h3><p>Sets whether the data table confirms delete operations to <em>confirm</em>. +See the <a href="qdatatable.html#confirmDelete-prop">"confirmDelete"</a> property for details. +<h3 class=fn>void <a name="setConfirmEdits"></a>TQDataTable::setConfirmEdits ( bool confirm )<tt> [virtual]</tt> +</h3><p>Sets whether the data table confirms edit operations to <em>confirm</em>. +See the <a href="qdatatable.html#confirmEdits-prop">"confirmEdits"</a> property for details. +<h3 class=fn>void <a name="setConfirmInsert"></a>TQDataTable::setConfirmInsert ( bool confirm )<tt> [virtual]</tt> +</h3><p>Sets whether the data table confirms insert operations to <em>confirm</em>. +See the <a href="qdatatable.html#confirmInsert-prop">"confirmInsert"</a> property for details. +<h3 class=fn>void <a name="setConfirmUpdate"></a>TQDataTable::setConfirmUpdate ( bool confirm )<tt> [virtual]</tt> +</h3><p>Sets whether the data table confirms update operations to <em>confirm</em>. +See the <a href="qdatatable.html#confirmUpdate-prop">"confirmUpdate"</a> property for details. +<h3 class=fn>void <a name="setDateFormat"></a>TQDataTable::setDateFormat ( const <a href="qt.html#DateFormat-enum">DateFormat</a> f )<tt> [virtual]</tt> +</h3><p>Sets the format used for displaying date/time values to <em>f</em>. +See the <a href="qdatatable.html#dateFormat-prop">"dateFormat"</a> property for details. +<h3 class=fn>void <a name="setFalseText"></a>TQDataTable::setFalseText ( const <a href="qstring.html">TQString</a> & falseText )<tt> [virtual]</tt> +</h3><p>Sets the text used to represent false values to <em>falseText</em>. +See the <a href="qdatatable.html#falseText-prop">"falseText"</a> property for details. +<h3 class=fn>void <a name="setFilter"></a>TQDataTable::setFilter ( const <a href="qstring.html">TQString</a> & filter )<tt> [virtual]</tt> +</h3><p>Sets the data filter for the data table to <em>filter</em>. +See the <a href="qdatatable.html#filter-prop">"filter"</a> property for details. +<h3 class=fn>void <a name="setNullText"></a>TQDataTable::setNullText ( const <a href="qstring.html">TQString</a> & nullText )<tt> [virtual]</tt> +</h3><p>Sets the text used to represent NULL values to <em>nullText</em>. +See the <a href="qdatatable.html#nullText-prop">"nullText"</a> property for details. +<h3 class=fn>void <a name="setSize"></a>TQDataTable::setSize ( <a href="qsqlcursor.html">TQSqlCursor</a> * sql )<tt> [protected]</tt> +</h3> +If the cursor's <em>sql</em> driver supports query sizes, the number of +rows in the table is set to the size of the query. Otherwise, the +table dynamically resizes itself as it is scrolled. If <em>sql</em> is +not active, it is made active by issuing a select() on the cursor +using the <em>sql</em> cursor's current filter and current sort. + +<h3 class=fn>void <a name="setSort"></a>TQDataTable::setSort ( const <a href="qstringlist.html">TQStringList</a> & sort )<tt> [virtual]</tt> +</h3><p>Sets the data table's sort to <em>sort</em>. +See the <a href="qdatatable.html#sort-prop">"sort"</a> property for details. +<h3 class=fn>void <a name="setSort-2"></a>TQDataTable::setSort ( const <a href="qsqlindex.html">TQSqlIndex</a> & sort )<tt> [virtual]</tt> +</h3> +This is an overloaded member function, provided for convenience. It behaves essentially like the above function. +<p> Sets the sort to be applied to the displayed data to <em>sort</em>. If +there is no current cursor, nothing happens. A <a href="qsqlindex.html">TQSqlIndex</a> contains +field names and their ordering (ASC or DESC); these are used to +compose the ORDER BY clause. +<p> <p>See also <a href="#sort-prop">sort</a>. + +<h3 class=fn>void <a name="setSqlCursor"></a>TQDataTable::setSqlCursor ( <a href="qsqlcursor.html">TQSqlCursor</a> * cursor = 0, bool autoPopulate = FALSE, bool autoDelete = FALSE )<tt> [virtual]</tt> +</h3> +Sets <em>cursor</em> as the data source for the table. To force the +display of the data from <em>cursor</em>, use <a href="#refresh">refresh</a>(). If <em>autoPopulate</em> is TRUE, columns are automatically created based upon +the fields in the <em>cursor</em> record. If <em>autoDelete</em> is TRUE (the +default is FALSE), the table will take ownership of the <em>cursor</em> +and delete it when appropriate. If the <em>cursor</em> is read-only, the +table becomes read-only. The table adopts the cursor's driver's +definition for representing NULL values as strings. +<p> <p>See also <a href="#refresh">refresh</a>(), <a href="qtable.html#readOnly-prop">readOnly</a>, <a href="#setAutoDelete">setAutoDelete</a>(), and <a href="qsqldriver.html#nullText">TQSqlDriver::nullText</a>(). + +<h3 class=fn>void <a name="setTrueText"></a>TQDataTable::setTrueText ( const <a href="qstring.html">TQString</a> & trueText )<tt> [virtual]</tt> +</h3><p>Sets the text used to represent true values to <em>trueText</em>. +See the <a href="qdatatable.html#trueText-prop">"trueText"</a> property for details. +<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="sort"></a>TQDataTable::sort () const +</h3><p>Returns the data table's sort. +See the <a href="qdatatable.html#sort-prop">"sort"</a> property for details. +<h3 class=fn>void <a name="sortAscending"></a>TQDataTable::sortAscending ( int col )<tt> [virtual slot]</tt> +</h3> +Sorts column <em>col</em> in ascending order. +<p> <p>See also <a href="qtable.html#sorting-prop">sorting</a>. + +<h3 class=fn>void <a name="sortColumn"></a>TQDataTable::sortColumn ( int col, bool ascending = TRUE, bool wholeRows = FALSE )<tt> [virtual]</tt> +</h3> +Sorts column <em>col</em> in ascending order if <em>ascending</em> is TRUE +(the default); otherwise sorts in descending order. +<p> The <em>wholeRows</em> parameter is ignored; TQDataTable always sorts +whole rows by the specified column. + +<p>Reimplemented from <a href="qtable.html#sortColumn">TQTable</a>. +<h3 class=fn>void <a name="sortDescending"></a>TQDataTable::sortDescending ( int col )<tt> [virtual slot]</tt> +</h3> +Sorts column <em>col</em> in descending order. +<p> <p>See also <a href="qtable.html#sorting-prop">sorting</a>. + +<h3 class=fn><a href="qsqlcursor.html">TQSqlCursor</a> * <a name="sqlCursor"></a>TQDataTable::sqlCursor () const +</h3> +Returns the cursor used by the data table. + +<h3 class=fn><a href="qstring.html">TQString</a> <a name="text"></a>TQDataTable::text ( int row, int col ) const<tt> [virtual]</tt> +</h3> +Returns the text in cell <em>row</em>, <em>col</em>, or an empty string if the +cell is empty. If the cell's value is NULL then <a href="#nullText">nullText</a>() will be +returned. If the cell does not exist then <a href="qstring.html#TQString-null">TQString::null</a> is +returned. + +<p>Reimplemented from <a href="qtable.html#text">TQTable</a>. +<h3 class=fn><a href="qstring.html">TQString</a> <a name="trueText"></a>TQDataTable::trueText () const +</h3><p>Returns the text used to represent true values. +See the <a href="qdatatable.html#trueText-prop">"trueText"</a> property for details. +<h3 class=fn>bool <a name="updateCurrent"></a>TQDataTable::updateCurrent ()<tt> [virtual protected]</tt> +</h3> +For an editable table, issues an update using the cursor's edit +buffer. If there is no current cursor or there is no current +selection, nothing happens. If <a href="#confirmEdits">confirmEdits</a>() or <a href="#confirmUpdate">confirmUpdate</a>() +is TRUE, <a href="#confirmEdit">confirmEdit</a>() is called to confirm the update. Returns +TRUE if the update succeeded; otherwise returns FALSE. +<p> The underlying cursor must have a valid primary index to ensure +that a unique record is updated within the database otherwise the +database may be changed to an inconsistent state. + +<h3 class=fn><a href="qvariant.html">TQVariant</a> <a name="value"></a>TQDataTable::value ( int row, int col ) const +</h3> +Returns the value in cell <em>row</em>, <em>col</em>, or an invalid value if +the cell does not exist or has no value. + +<hr><h2>Property Documentation</h2> +<h3 class=fn>bool <a name="autoEdit-prop"></a>autoEdit</h3> +<p>This property holds whether the data table automatically applies edits. +<p>The default value for this property is TRUE. When the user begins +an insert or update in the table there are two possible outcomes +when they navigate to another record: +<p> <ol type=1> +<li> the insert or update is is performed -- this occurs if autoEdit is TRUE +<li> the insert or update is abandoned -- this occurs if autoEdit is FALSE +</ol> + +<p>Set this property's value with <a href="#setAutoEdit">setAutoEdit</a>() and get this property's value with <a href="#autoEdit">autoEdit</a>(). +<h3 class=fn>bool <a name="confirmCancels-prop"></a>confirmCancels</h3> +<p>This property holds whether the data table confirms cancel operations. +<p>If the confirmCancel property is TRUE, all cancels must be +confirmed by the user through a message box (this behavior can be +changed by overriding the <a href="#confirmCancel">confirmCancel</a>() function), otherwise all +cancels occur immediately. The default is FALSE. +<p> <p>See also <a href="#confirmEdits-prop">confirmEdits</a> and <a href="#confirmCancel">confirmCancel</a>(). + +<p>Set this property's value with <a href="#setConfirmCancels">setConfirmCancels</a>() and get this property's value with <a href="#confirmCancels">confirmCancels</a>(). +<h3 class=fn>bool <a name="confirmDelete-prop"></a>confirmDelete</h3> +<p>This property holds whether the data table confirms delete operations. +<p>If the confirmDelete property is TRUE, all deletions must be +confirmed by the user through a message box (this behaviour can be +changed by overriding the <a href="#confirmEdit">confirmEdit</a>() function), otherwise all +delete operations occur immediately. +<p> <p>See also <a href="#confirmCancels-prop">confirmCancels</a>, <a href="#confirmEdits-prop">confirmEdits</a>, <a href="#confirmUpdate-prop">confirmUpdate</a>, and <a href="#confirmInsert-prop">confirmInsert</a>. + +<p>Set this property's value with <a href="#setConfirmDelete">setConfirmDelete</a>() and get this property's value with <a href="#confirmDelete">confirmDelete</a>(). +<h3 class=fn>bool <a name="confirmEdits-prop"></a>confirmEdits</h3> +<p>This property holds whether the data table confirms edit operations. +<p>If the confirmEdits property is TRUE, the data table confirms all +edit operations (inserts, updates and deletes). Finer control of +edit confirmation can be achieved using <a href="#confirmCancels-prop">confirmCancels</a>, <a href="#confirmInsert-prop">confirmInsert</a>, <a href="#confirmUpdate-prop">confirmUpdate</a> and <a href="#confirmDelete-prop">confirmDelete</a>. +<p> <p>See also <a href="#confirmCancels-prop">confirmCancels</a>, <a href="#confirmInsert-prop">confirmInsert</a>, <a href="#confirmUpdate-prop">confirmUpdate</a>, and <a href="#confirmDelete-prop">confirmDelete</a>. + +<p>Set this property's value with <a href="#setConfirmEdits">setConfirmEdits</a>() and get this property's value with <a href="#confirmEdits">confirmEdits</a>(). +<h3 class=fn>bool <a name="confirmInsert-prop"></a>confirmInsert</h3> +<p>This property holds whether the data table confirms insert operations. +<p>If the confirmInsert property is TRUE, all insertions must be +confirmed by the user through a message box (this behaviour can be +changed by overriding the <a href="#confirmEdit">confirmEdit</a>() function), otherwise all +insert operations occur immediately. +<p> <p>See also <a href="#confirmCancels-prop">confirmCancels</a>, <a href="#confirmEdits-prop">confirmEdits</a>, <a href="#confirmUpdate-prop">confirmUpdate</a>, and <a href="#confirmDelete-prop">confirmDelete</a>. + +<p>Set this property's value with <a href="#setConfirmInsert">setConfirmInsert</a>() and get this property's value with <a href="#confirmInsert">confirmInsert</a>(). +<h3 class=fn>bool <a name="confirmUpdate-prop"></a>confirmUpdate</h3> +<p>This property holds whether the data table confirms update operations. +<p>If the confirmUpdate property is TRUE, all updates must be +confirmed by the user through a message box (this behaviour can be +changed by overriding the <a href="#confirmEdit">confirmEdit</a>() function), otherwise all +update operations occur immediately. +<p> <p>See also <a href="#confirmCancels-prop">confirmCancels</a>, <a href="#confirmEdits-prop">confirmEdits</a>, <a href="#confirmInsert-prop">confirmInsert</a>, and <a href="#confirmDelete-prop">confirmDelete</a>. + +<p>Set this property's value with <a href="#setConfirmUpdate">setConfirmUpdate</a>() and get this property's value with <a href="#confirmUpdate">confirmUpdate</a>(). +<h3 class=fn><a href="qt.html#DateFormat-enum">DateFormat</a> <a name="dateFormat-prop"></a>dateFormat</h3> +<p>This property holds the format used for displaying date/time values. +<p>The dateFormat property is used for displaying date/time values in +the table. The default value is <a href="qt.html#DateFormat-enum">TQt::LocalDate</a>. + +<p>Set this property's value with <a href="#setDateFormat">setDateFormat</a>() and get this property's value with <a href="#dateFormat">dateFormat</a>(). +<h3 class=fn><a href="qstring.html">TQString</a> <a name="falseText-prop"></a>falseText</h3> +<p>This property holds the text used to represent false values. +<p>The falseText property will be used to represent NULL values in +the table. The default value is "False". + +<p>Set this property's value with <a href="#setFalseText">setFalseText</a>() and get this property's value with <a href="#falseText">falseText</a>(). +<h3 class=fn><a href="qstring.html">TQString</a> <a name="filter-prop"></a>filter</h3> +<p>This property holds the data filter for the data table. +<p>The filter applies to the data shown in the table. To view data +with a new filter, use <a href="#refresh">refresh</a>(). A filter string is an SQL WHERE +clause without the WHERE keyword. +<p> There is no default filter. +<p> <p>See also <a href="#sort-prop">sort</a>. + +<p> +<p>Set this property's value with <a href="#setFilter">setFilter</a>() and get this property's value with <a href="#filter">filter</a>(). +<h3 class=fn><a href="qstring.html">TQString</a> <a name="nullText-prop"></a>nullText</h3> +<p>This property holds the text used to represent NULL values. +<p>The nullText property will be used to represent NULL values in the +table. The default value is provided by the cursor's driver. + +<p>Set this property's value with <a href="#setNullText">setNullText</a>() and get this property's value with <a href="#nullText">nullText</a>(). +<h3 class=fn>int <a name="numCols-prop"></a>numCols</h3> +<p>This property holds the number of columns in the table. +<p> +<p>Get this property's value with <a href="#numCols">numCols</a>(). +<h3 class=fn>int <a name="numRows-prop"></a>numRows</h3> +<p>This property holds the number of rows in the table. +<p> +<p>Get this property's value with <a href="#numRows">numRows</a>(). +<h3 class=fn><a href="qstringlist.html">TQStringList</a> <a name="sort-prop"></a>sort</h3> +<p>This property holds the data table's sort. +<p>The table's sort affects the order in which data records are +displayed in the table. To apply a sort, use <a href="#refresh">refresh</a>(). +<p> When examining the sort property, a string list is returned with +each item having the form 'fieldname order' (e.g., 'id ASC', +'surname DESC'). +<p> There is no default sort. +<p> Note that if you want to iterate over the sort list, you should +iterate over a copy, e.g. +<pre> + <a href="qstringlist.html">TQStringList</a> list = myDataTable.sort(); + TQStringList::Iterator it = list.<a href="qvaluelist.html#begin">begin</a>(); + while( it != list.<a href="qvaluelist.html#end">end</a>() ) { + myProcessing( *it ); + ++it; + } + </pre> + +<p> <p>See also <a href="#filter-prop">filter</a> and <a href="#refresh">refresh</a>(). + +<p>Set this property's value with <a href="#setSort">setSort</a>() and get this property's value with <a href="#sort">sort</a>(). +<h3 class=fn><a href="qstring.html">TQString</a> <a name="trueText-prop"></a>trueText</h3> +<p>This property holds the text used to represent true values. +<p>The trueText property will be used to represent NULL values in the +table. The default value is "True". + +<p>Set this property's value with <a href="#setTrueText">setTrueText</a>() and get this property's value with <a href="#trueText">trueText</a>(). +<!-- 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> |