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libqt3-devel-3.0.2-2mdk.i586.rpm

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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>sql/overview/custom1/main.cpp Example File</h1>

 
<pre>/****************************************************************************
** $Id$
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include "main.h"


<a name="f134"></a>CustomEdit::CustomEdit( <a href="qwidget.html">QWidget</a> *parent, const char *name ) :
    <a href="qlineedit.html">QLineEdit</a>( parent, name )
{
    <a href="qobject.html#connect">connect</a>( this, SIGNAL(<a href="qlineedit.html#textChanged">textChanged</a>(const <a href="qstring.html">QString</a> &amp;)),
             this, SLOT(changed(const <a href="qstring.html">QString</a> &amp;)) );
}


void <a name="f135"></a>CustomEdit::changed( const <a href="qstring.html">QString</a> &amp;line )
{
    setUpperLine( line );
}


void <a name="f136"></a>CustomEdit::setUpperLine( const <a href="qstring.html">QString</a> &amp;line )
{
    upperLineText = line.<a href="qstring.html#upper">upper</a>();
    setText( upperLineText );
}


QString <a name="f137"></a>CustomEdit::upperLine() const
{
    return upperLineText;
}


<a name="f138"></a>FormDialog::FormDialog()
{
    <a href="qlabel.html">QLabel</a>      *forenameLabel  = new <a href="qlabel.html">QLabel</a>( "Forename:", this );
    CustomEdit  *forenameEdit   = new CustomEdit( this );
    <a href="qlabel.html">QLabel</a>      *surnameLabel   = new <a href="qlabel.html">QLabel</a>( "Surname:", this );
    CustomEdit  *surnameEdit    = new CustomEdit( this );
    <a href="qlabel.html">QLabel</a>      *salaryLabel    = new <a href="qlabel.html">QLabel</a>( "Salary:", this );
    <a href="qlineedit.html">QLineEdit</a>   *salaryEdit     = new <a href="qlineedit.html">QLineEdit</a>( this );
    salaryEdit-&gt;<a href="qlineedit.html#setAlignment">setAlignment</a>( Qt::AlignRight );
    <a href="qpushbutton.html">QPushButton</a> *saveButton     = new <a href="qpushbutton.html">QPushButton</a>( "&amp;Save", this );
    <a href="qobject.html#connect">connect</a>( saveButton, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), this, SLOT(save()) );

    <a href="qgridlayout.html">QGridLayout</a> *grid = new <a href="qgridlayout.html">QGridLayout</a>( this );
    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( forenameLabel, 0, 0 );
    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( forenameEdit,  0, 1 );
    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( surnameLabel,  1, 0 );
    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( surnameEdit,   1, 1 );
    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( salaryLabel,   2, 0 );
    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( salaryEdit,    2, 1 );
    grid-&gt;<a href="qgridlayout.html#addWidget">addWidget</a>( saveButton,    3, 0 );
    grid-&gt;<a href="qlayout.html#activate">activate</a>();

    staffCursor = new <a href="qsqlcursor.html">QSqlCursor</a>( "staff" );
    staffCursor-&gt;<a href="qsqlcursor.html#setTrimmed">setTrimmed</a>( "forename", TRUE );
    staffCursor-&gt;<a href="qsqlcursor.html#setTrimmed">setTrimmed</a>( "surname",  TRUE );
    idIndex = staffCursor-&gt;<a href="qsqlcursor.html#index">index</a>( "id" );
    staffCursor-&gt;<a href="qsqlcursor.html#select">select</a>( idIndex );
    staffCursor-&gt;<a href="qsqlquery.html#first">first</a>();

    propMap = new <a href="qsqlpropertymap.html">QSqlPropertyMap</a>;
    propMap-&gt;<a href="qsqlpropertymap.html#insert">insert</a>( forenameEdit-&gt;<a href="qobject.html#className">className</a>(), "upperLine" );

    sqlForm = new <a href="qsqlform.html">QSqlForm</a>( this );
    sqlForm-&gt;<a href="qsqlform.html#setRecord">setRecord</a>( staffCursor-&gt;<a href="qsqlcursor.html#primeUpdate">primeUpdate</a>() );
    sqlForm-&gt;<a href="qsqlform.html#installPropertyMap">installPropertyMap</a>( propMap );
    sqlForm-&gt;<a href="qsqlform.html#insert">insert</a>( forenameEdit, "forename" );
    sqlForm-&gt;<a href="qsqlform.html#insert">insert</a>( surnameEdit, "surname" );
    sqlForm-&gt;<a href="qsqlform.html#insert">insert</a>( salaryEdit, "salary" );
    sqlForm-&gt;<a href="qsqlform.html#readFields">readFields</a>();
}


FormDialog::~FormDialog()
{
    delete staffCursor;
}


void <a name="f139"></a>FormDialog::save()
{
    sqlForm-&gt;<a href="qsqlform.html#writeFields">writeFields</a>();
    staffCursor-&gt;<a href="qsqlcursor.html#update">update</a>();
    staffCursor-&gt;<a href="qsqlcursor.html#select">select</a>( idIndex );
    staffCursor-&gt;<a href="qsqlquery.html#first">first</a>();
}


int main( int argc, char *argv[] )
{
    <a href="qapplication.html">QApplication</a> app( argc, argv );

    if ( ! createConnections() )
        return 1;

    FormDialog *formDialog = new FormDialog();
    formDialog-&gt;<a href="qdialog.html#show">show</a>();
    app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( formDialog );

    return app.<a href="qapplication.html#exec">exec</a>();
}


bool createConnections()
{
    // create the default database connection
    <a href="qsqldatabase.html">QSqlDatabase</a> *defaultDB = QSqlDatabase::<a href="qsqldatabase.html#addDatabase">addDatabase</a>( DB_SALES_DRIVER );
    if ( ! defaultDB ) {
        <a href="qapplication.html#qWarning">qWarning</a>( "Failed to connect to driver" );
        return FALSE;
    }
    defaultDB-&gt;<a href="qsqldatabase.html#setDatabaseName">setDatabaseName</a>( DB_SALES_DBNAME );
    defaultDB-&gt;<a href="qsqldatabase.html#setUserName">setUserName</a>( DB_SALES_USER );
    defaultDB-&gt;<a href="qsqldatabase.html#setPassword">setPassword</a>( DB_SALES_PASSWD );
    defaultDB-&gt;<a href="qsqldatabase.html#setHostName">setHostName</a>( DB_SALES_HOST );
    if ( ! defaultDB-&gt;<a href="qsqldatabase.html#open">open</a>() ) {
        <a href="qapplication.html#qWarning">qWarning</a>( "Failed to open sales database: " +
                  defaultDB-&gt;<a href="qsqldatabase.html#lastError">lastError</a>().driverText() );
        <a href="qapplication.html#qWarning">qWarning</a>( defaultDB-&gt;<a href="qsqldatabase.html#lastError">lastError</a>().databaseText() );
        return FALSE;
    }

    // create a named connection to oracle
    <a href="qsqldatabase.html">QSqlDatabase</a> *oracle = QSqlDatabase::<a href="qsqldatabase.html#addDatabase">addDatabase</a>( DB_ORDERS_DRIVER, "ORACLE" );
    if ( ! oracle ) {
        <a href="qapplication.html#qWarning">qWarning</a>( "Failed to connect to oracle driver" );
        return FALSE;
    }
    oracle-&gt;<a href="qsqldatabase.html#setDatabaseName">setDatabaseName</a>( DB_ORDERS_DBNAME );
    oracle-&gt;<a href="qsqldatabase.html#setUserName">setUserName</a>( DB_ORDERS_USER );
    oracle-&gt;<a href="qsqldatabase.html#setPassword">setPassword</a>( DB_ORDERS_PASSWD );
    oracle-&gt;<a href="qsqldatabase.html#setHostName">setHostName</a>( DB_ORDERS_HOST );
    if ( ! oracle-&gt;<a href="qsqldatabase.html#open">open</a>() ) {
        <a href="qapplication.html#qWarning">qWarning</a>( "Failed to open orders database: " +
                  oracle-&gt;<a href="qsqldatabase.html#lastError">lastError</a>().driverText() );
        <a href="qapplication.html#qWarning">qWarning</a>( oracle-&gt;<a href="qsqldatabase.html#lastError">lastError</a>().databaseText() );
        return FALSE;
    }

    return TRUE;
}


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<a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
<td align=right><div align=right>Qt version 3.0.2</div>
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