<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>browser.cpp Example File | Qt SQL 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtsql-index.html">Qt SQL</a></td><td ><a href="qtsql-sqlbrowser-example.html">SQL Browser</a></td><td >browser.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">browser.cpp Example File</h1> <span class="subtitle">sqlbrowser/browser.cpp</span> <!-- $$$sqlbrowser/browser.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the demonstration applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "browser.h"</span> <span class="preprocessor">#include "qsqlconnectiondialog.h"</span> <span class="preprocessor">#include <QtWidgets></span> <span class="preprocessor">#include <QtSql></span> Browser<span class="operator">::</span>Browser(<span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="../qtwidgets/qwidget.html">QWidget</a></span>(parent) { setupUi(<span class="keyword">this</span>); table<span class="operator">-</span><span class="operator">></span>addAction(insertRowAction); table<span class="operator">-</span><span class="operator">></span>addAction(deleteRowAction); table<span class="operator">-</span><span class="operator">></span>addAction(fieldStrategyAction); table<span class="operator">-</span><span class="operator">></span>addAction(rowStrategyAction); table<span class="operator">-</span><span class="operator">></span>addAction(manualStrategyAction); table<span class="operator">-</span><span class="operator">></span>addAction(submitAction); table<span class="operator">-</span><span class="operator">></span>addAction(revertAction); table<span class="operator">-</span><span class="operator">></span>addAction(selectAction); <span class="keyword">if</span> (<span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span><span class="operator">::</span>drivers()<span class="operator">.</span>isEmpty()) <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>information(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"No database drivers found"</span>)<span class="operator">,</span> tr(<span class="string">"This demo requires at least one Qt database driver. "</span> <span class="string">"Please check the documentation how to build the "</span> <span class="string">"Qt SQL plugins."</span>)); <span class="keyword">emit</span> statusMessage(tr(<span class="string">"Ready."</span>)); } Browser<span class="operator">::</span><span class="operator">~</span>Browser() { } <span class="type">void</span> Browser<span class="operator">::</span>exec() { <span class="type"><a href="qsqlquerymodel.html">QSqlQueryModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qsqlquerymodel.html">QSqlQueryModel</a></span>(table); model<span class="operator">-</span><span class="operator">></span>setQuery(<span class="type"><a href="qsqlquery.html">QSqlQuery</a></span>(sqlEdit<span class="operator">-</span><span class="operator">></span>toPlainText()<span class="operator">,</span> connectionWidget<span class="operator">-</span><span class="operator">></span>currentDatabase())); table<span class="operator">-</span><span class="operator">></span>setModel(model); <span class="keyword">if</span> (model<span class="operator">-</span><span class="operator">></span>lastError()<span class="operator">.</span>type() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qsqlerror.html">QSqlError</a></span><span class="operator">::</span>NoError) <span class="keyword">emit</span> statusMessage(model<span class="operator">-</span><span class="operator">></span>lastError()<span class="operator">.</span>text()); <span class="keyword">else</span> <span class="keyword">if</span> (model<span class="operator">-</span><span class="operator">></span>query()<span class="operator">.</span>isSelect()) <span class="keyword">emit</span> statusMessage(tr(<span class="string">"Query OK."</span>)); <span class="keyword">else</span> <span class="keyword">emit</span> statusMessage(tr(<span class="string">"Query OK, number of affected rows: %1"</span>)<span class="operator">.</span>arg( model<span class="operator">-</span><span class="operator">></span>query()<span class="operator">.</span>numRowsAffected())); updateActions(); } <span class="type"><a href="qsqlerror.html">QSqlError</a></span> Browser<span class="operator">::</span>addConnection(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>driver<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>dbName<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>host<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>user<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>passwd<span class="operator">,</span> <span class="type">int</span> port) { <span class="keyword">static</span> <span class="type">int</span> cCount <span class="operator">=</span> <span class="number">0</span>; <span class="type"><a href="qsqlerror.html">QSqlError</a></span> err; <span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span> db <span class="operator">=</span> <span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span><span class="operator">::</span>addDatabase(driver<span class="operator">,</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>(<span class="string">"Browser%1"</span>)<span class="operator">.</span>arg(<span class="operator">+</span><span class="operator">+</span>cCount)); db<span class="operator">.</span>setDatabaseName(dbName); db<span class="operator">.</span>setHostName(host); db<span class="operator">.</span>setPort(port); <span class="keyword">if</span> (<span class="operator">!</span>db<span class="operator">.</span>open(user<span class="operator">,</span> passwd)) { err <span class="operator">=</span> db<span class="operator">.</span>lastError(); db <span class="operator">=</span> <span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span>(); <span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span><span class="operator">::</span>removeDatabase(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>(<span class="string">"Browser%1"</span>)<span class="operator">.</span>arg(cCount)); } connectionWidget<span class="operator">-</span><span class="operator">></span>refresh(); <span class="keyword">return</span> err; } <span class="type">void</span> Browser<span class="operator">::</span>addConnection() { <span class="type">QSqlConnectionDialog</span> dialog(<span class="keyword">this</span>); <span class="keyword">if</span> (dialog<span class="operator">.</span>exec() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="../qtwidgets/qdialog.html">QDialog</a></span><span class="operator">::</span>Accepted) <span class="keyword">return</span>; <span class="keyword">if</span> (dialog<span class="operator">.</span>useInMemoryDatabase()) { <span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span><span class="operator">::</span>database(<span class="string">"in_mem_db"</span><span class="operator">,</span> <span class="keyword">false</span>)<span class="operator">.</span>close(); <span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span><span class="operator">::</span>removeDatabase(<span class="string">"in_mem_db"</span>); <span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span> db <span class="operator">=</span> <span class="type"><a href="qsqldatabase.html">QSqlDatabase</a></span><span class="operator">::</span>addDatabase(<span class="string">"QSQLITE"</span><span class="operator">,</span> <span class="string">"in_mem_db"</span>); db<span class="operator">.</span>setDatabaseName(<span class="string">":memory:"</span>); <span class="keyword">if</span> (<span class="operator">!</span>db<span class="operator">.</span>open()) <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Unable to open database"</span>)<span class="operator">,</span> tr(<span class="string">"An error occurred while "</span> <span class="string">"opening the connection: "</span>) <span class="operator">+</span> db<span class="operator">.</span>lastError()<span class="operator">.</span>text()); <span class="type"><a href="qsqlquery.html">QSqlQuery</a></span> q(<span class="string">""</span><span class="operator">,</span> db); q<span class="operator">.</span>exec(<span class="string">"drop table Movies"</span>); q<span class="operator">.</span>exec(<span class="string">"drop table Names"</span>); q<span class="operator">.</span>exec(<span class="string">"create table Movies (id integer primary key, Title varchar, Director varchar, Rating number)"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Movies values (0, 'Metropolis', 'Fritz Lang', '8.4')"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Movies values (1, 'Nosferatu, eine Symphonie des Grauens', 'F.W. Murnau', '8.1')"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Movies values (2, 'Bis ans Ende der Welt', 'Wim Wenders', '6.5')"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Movies values (3, 'Hardware', 'Richard Stanley', '5.2')"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Movies values (4, 'Mitchell', 'Andrew V. McLaglen', '2.1')"</span>); q<span class="operator">.</span>exec(<span class="string">"create table Names (id integer primary key, Firstname varchar, Lastname varchar, City varchar)"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Names values (0, 'Sala', 'Palmer', 'Morristown')"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Names values (1, 'Christopher', 'Walker', 'Morristown')"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Names values (2, 'Donald', 'Duck', 'Andeby')"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Names values (3, 'Buck', 'Rogers', 'Paris')"</span>); q<span class="operator">.</span>exec(<span class="string">"insert into Names values (4, 'Sherlock', 'Holmes', 'London')"</span>); connectionWidget<span class="operator">-</span><span class="operator">></span>refresh(); } <span class="keyword">else</span> { <span class="type"><a href="qsqlerror.html">QSqlError</a></span> err <span class="operator">=</span> addConnection(dialog<span class="operator">.</span>driverName()<span class="operator">,</span> dialog<span class="operator">.</span>databaseName()<span class="operator">,</span> dialog<span class="operator">.</span>hostName()<span class="operator">,</span> dialog<span class="operator">.</span>userName()<span class="operator">,</span> dialog<span class="operator">.</span>password()<span class="operator">,</span> dialog<span class="operator">.</span>port()); <span class="keyword">if</span> (err<span class="operator">.</span>type() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qsqlerror.html">QSqlError</a></span><span class="operator">::</span>NoError) <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>warning(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"Unable to open database"</span>)<span class="operator">,</span> tr(<span class="string">"An error occurred while "</span> <span class="string">"opening the connection: "</span>) <span class="operator">+</span> err<span class="operator">.</span>text()); } } <span class="type">void</span> Browser<span class="operator">::</span>showTable(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>t) { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> <span class="keyword">new</span> CustomModel(table<span class="operator">,</span> connectionWidget<span class="operator">-</span><span class="operator">></span>currentDatabase()); model<span class="operator">-</span><span class="operator">></span>setEditStrategy(<span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span><span class="operator">::</span>OnRowChange); model<span class="operator">-</span><span class="operator">></span>setTable(connectionWidget<span class="operator">-</span><span class="operator">></span>currentDatabase()<span class="operator">.</span>driver()<span class="operator">-</span><span class="operator">></span>escapeIdentifier(t<span class="operator">,</span> <span class="type"><a href="qsqldriver.html">QSqlDriver</a></span><span class="operator">::</span>TableName)); model<span class="operator">-</span><span class="operator">></span>select(); <span class="keyword">if</span> (model<span class="operator">-</span><span class="operator">></span>lastError()<span class="operator">.</span>type() <span class="operator">!</span><span class="operator">=</span> <span class="type"><a href="qsqlerror.html">QSqlError</a></span><span class="operator">::</span>NoError) <span class="keyword">emit</span> statusMessage(model<span class="operator">-</span><span class="operator">></span>lastError()<span class="operator">.</span>text()); table<span class="operator">-</span><span class="operator">></span>setModel(model); table<span class="operator">-</span><span class="operator">></span>setEditTriggers(<span class="type"><a href="../qtwidgets/qabstractitemview.html">QAbstractItemView</a></span><span class="operator">::</span>DoubleClicked<span class="operator">|</span><span class="type"><a href="../qtwidgets/qabstractitemview.html">QAbstractItemView</a></span><span class="operator">::</span>EditKeyPressed); connect(table<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="../qtcore/qitemselectionmodel.html">QItemSelectionModel</a></span><span class="operator">::</span>currentRowChanged<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>Browser<span class="operator">::</span>currentChanged); updateActions(); } <span class="type">void</span> Browser<span class="operator">::</span>showMetaData(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>t) { <span class="type"><a href="qsqlrecord.html">QSqlRecord</a></span> rec <span class="operator">=</span> connectionWidget<span class="operator">-</span><span class="operator">></span>currentDatabase()<span class="operator">.</span>record(t); <span class="type">QStandardItemModel</span> <span class="operator">*</span>model <span class="operator">=</span> <span class="keyword">new</span> <span class="type">QStandardItemModel</span>(table); model<span class="operator">-</span><span class="operator">></span>insertRows(<span class="number">0</span><span class="operator">,</span> rec<span class="operator">.</span>count()); model<span class="operator">-</span><span class="operator">></span>insertColumns(<span class="number">0</span><span class="operator">,</span> <span class="number">7</span>); model<span class="operator">-</span><span class="operator">></span>setHeaderData(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="string">"Fieldname"</span>); model<span class="operator">-</span><span class="operator">></span>setHeaderData(<span class="number">1</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="string">"Type"</span>); model<span class="operator">-</span><span class="operator">></span>setHeaderData(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="string">"Length"</span>); model<span class="operator">-</span><span class="operator">></span>setHeaderData(<span class="number">3</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="string">"Precision"</span>); model<span class="operator">-</span><span class="operator">></span>setHeaderData(<span class="number">4</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="string">"Required"</span>); model<span class="operator">-</span><span class="operator">></span>setHeaderData(<span class="number">5</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="string">"AutoValue"</span>); model<span class="operator">-</span><span class="operator">></span>setHeaderData(<span class="number">6</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> <span class="string">"DefaultValue"</span>); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> rec<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="qsqlfield.html">QSqlField</a></span> fld <span class="operator">=</span> rec<span class="operator">.</span>field(i); model<span class="operator">-</span><span class="operator">></span>setData(model<span class="operator">-</span><span class="operator">></span>index(i<span class="operator">,</span> <span class="number">0</span>)<span class="operator">,</span> fld<span class="operator">.</span>name()); model<span class="operator">-</span><span class="operator">></span>setData(model<span class="operator">-</span><span class="operator">></span>index(i<span class="operator">,</span> <span class="number">1</span>)<span class="operator">,</span> fld<span class="operator">.</span>typeID() <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span> <span class="operator">?</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span>(<span class="type"><a href="../qtcore/qmetatype.html">QMetaType</a></span><span class="operator">::</span>typeName(fld<span class="operator">.</span>type())) : <span class="type"><a href="../qtcore/qstring.html">QString</a></span>(<span class="string">"%1 (%2)"</span>)<span class="operator">.</span>arg(<span class="type"><a href="../qtcore/qmetatype.html">QMetaType</a></span><span class="operator">::</span>typeName(fld<span class="operator">.</span>type()))<span class="operator">.</span>arg(fld<span class="operator">.</span>typeID())); model<span class="operator">-</span><span class="operator">></span>setData(model<span class="operator">-</span><span class="operator">></span>index(i<span class="operator">,</span> <span class="number">2</span>)<span class="operator">,</span> fld<span class="operator">.</span>length()); model<span class="operator">-</span><span class="operator">></span>setData(model<span class="operator">-</span><span class="operator">></span>index(i<span class="operator">,</span> <span class="number">3</span>)<span class="operator">,</span> fld<span class="operator">.</span>precision()); model<span class="operator">-</span><span class="operator">></span>setData(model<span class="operator">-</span><span class="operator">></span>index(i<span class="operator">,</span> <span class="number">4</span>)<span class="operator">,</span> fld<span class="operator">.</span>requiredStatus() <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span> <span class="operator">?</span> <span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span>(<span class="string">"?"</span>) : <span class="type"><a href="../qtcore/qvariant.html">QVariant</a></span>(bool(fld<span class="operator">.</span>requiredStatus()))); model<span class="operator">-</span><span class="operator">></span>setData(model<span class="operator">-</span><span class="operator">></span>index(i<span class="operator">,</span> <span class="number">5</span>)<span class="operator">,</span> fld<span class="operator">.</span>isAutoValue()); model<span class="operator">-</span><span class="operator">></span>setData(model<span class="operator">-</span><span class="operator">></span>index(i<span class="operator">,</span> <span class="number">6</span>)<span class="operator">,</span> fld<span class="operator">.</span>defaultValue()); } table<span class="operator">-</span><span class="operator">></span>setModel(model); table<span class="operator">-</span><span class="operator">></span>setEditTriggers(<span class="type"><a href="../qtwidgets/qabstractitemview.html">QAbstractItemView</a></span><span class="operator">::</span>NoEditTriggers); updateActions(); } <span class="type">void</span> Browser<span class="operator">::</span>insertRow() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); <span class="keyword">if</span> (<span class="operator">!</span>model) <span class="keyword">return</span>; <span class="type"><a href="../qtcore/qmodelindex.html">QModelIndex</a></span> insertIndex <span class="operator">=</span> table<span class="operator">-</span><span class="operator">></span>currentIndex(); <span class="type">int</span> row <span class="operator">=</span> insertIndex<span class="operator">.</span>row() <span class="operator">=</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span> <span class="operator">?</span> <span class="number">0</span> : insertIndex<span class="operator">.</span>row(); model<span class="operator">-</span><span class="operator">></span>insertRow(row); insertIndex <span class="operator">=</span> model<span class="operator">-</span><span class="operator">></span>index(row<span class="operator">,</span> <span class="number">0</span>); table<span class="operator">-</span><span class="operator">></span>setCurrentIndex(insertIndex); table<span class="operator">-</span><span class="operator">></span>edit(insertIndex); } <span class="type">void</span> Browser<span class="operator">::</span>deleteRow() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span>model <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); <span class="keyword">if</span> (<span class="operator">!</span>model) <span class="keyword">return</span>; <span class="type"><a href="../qtcore/qmodelindex.html#QModelIndexList-typedef">QModelIndexList</a></span> currentSelection <span class="operator">=</span> table<span class="operator">-</span><span class="operator">></span>selectionModel()<span class="operator">-</span><span class="operator">></span>selectedIndexes(); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> currentSelection<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">if</span> (currentSelection<span class="operator">.</span>at(i)<span class="operator">.</span>column() <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>) <span class="keyword">continue</span>; model<span class="operator">-</span><span class="operator">></span>removeRow(currentSelection<span class="operator">.</span>at(i)<span class="operator">.</span>row()); } updateActions(); } <span class="type">void</span> Browser<span class="operator">::</span>updateActions() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span> tm <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); bool enableIns <span class="operator">=</span> tm; bool enableDel <span class="operator">=</span> enableIns <span class="operator">&</span><span class="operator">&</span> table<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">.</span>isValid(); insertRowAction<span class="operator">-</span><span class="operator">></span>setEnabled(enableIns); deleteRowAction<span class="operator">-</span><span class="operator">></span>setEnabled(enableDel); fieldStrategyAction<span class="operator">-</span><span class="operator">></span>setEnabled(tm); rowStrategyAction<span class="operator">-</span><span class="operator">></span>setEnabled(tm); manualStrategyAction<span class="operator">-</span><span class="operator">></span>setEnabled(tm); submitAction<span class="operator">-</span><span class="operator">></span>setEnabled(tm); revertAction<span class="operator">-</span><span class="operator">></span>setEnabled(tm); selectAction<span class="operator">-</span><span class="operator">></span>setEnabled(tm); <span class="keyword">if</span> (tm) { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span><span class="operator">::</span>EditStrategy es <span class="operator">=</span> tm<span class="operator">-</span><span class="operator">></span>editStrategy(); fieldStrategyAction<span class="operator">-</span><span class="operator">></span>setChecked(es <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span><span class="operator">::</span>OnFieldChange); rowStrategyAction<span class="operator">-</span><span class="operator">></span>setChecked(es <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span><span class="operator">::</span>OnRowChange); manualStrategyAction<span class="operator">-</span><span class="operator">></span>setChecked(es <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span><span class="operator">::</span>OnManualSubmit); } } <span class="type">void</span> Browser<span class="operator">::</span>about() { <span class="type"><a href="../qtwidgets/qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>about(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"About"</span>)<span class="operator">,</span> tr(<span class="string">"The SQL Browser demonstration "</span> <span class="string">"shows how a data browser can be used to visualize the results of SQL"</span> <span class="string">"statements on a live database"</span>)); } <span class="type">void</span> Browser<span class="operator">::</span>on_fieldStrategyAction_triggered() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span> tm <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); <span class="keyword">if</span> (tm) tm<span class="operator">-</span><span class="operator">></span>setEditStrategy(<span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span><span class="operator">::</span>OnFieldChange); } <span class="type">void</span> Browser<span class="operator">::</span>on_rowStrategyAction_triggered() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span> tm <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); <span class="keyword">if</span> (tm) tm<span class="operator">-</span><span class="operator">></span>setEditStrategy(<span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span><span class="operator">::</span>OnRowChange); } <span class="type">void</span> Browser<span class="operator">::</span>on_manualStrategyAction_triggered() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span> tm <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); <span class="keyword">if</span> (tm) tm<span class="operator">-</span><span class="operator">></span>setEditStrategy(<span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span><span class="operator">::</span>OnManualSubmit); } <span class="type">void</span> Browser<span class="operator">::</span>on_submitAction_triggered() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span> tm <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); <span class="keyword">if</span> (tm) tm<span class="operator">-</span><span class="operator">></span>submitAll(); } <span class="type">void</span> Browser<span class="operator">::</span>on_revertAction_triggered() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span> tm <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); <span class="keyword">if</span> (tm) tm<span class="operator">-</span><span class="operator">></span>revertAll(); } <span class="type">void</span> Browser<span class="operator">::</span>on_selectAction_triggered() { <span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span> tm <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qsqltablemodel.html">QSqlTableModel</a></span> <span class="operator">*</span><span class="operator">></span>(table<span class="operator">-</span><span class="operator">></span>model()); <span class="keyword">if</span> (tm) tm<span class="operator">-</span><span class="operator">></span>select(); } </pre> </div> <!-- @@@sqlbrowser/browser.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>