sql-overview-custom1-main-cpp.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/doc/sql.doc:58 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>sql/overview/custom1/main.cpp Example File</title><style type="text/css"><!--h3.fn,span.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>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="f16"></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> &)), this, SLOT(changed(const <a href="qstring.html">QString</a> &)) );}void <a name="f17"></a>CustomEdit::changed( const <a href="qstring.html">QString</a> &line ){ setUpperLine( line );}void <a name="f18"></a>CustomEdit::setUpperLine( const <a href="qstring.html">QString</a> &line ){ upperLineText = line.<a href="qstring.html#upper">upper</a>(); setText( upperLineText );}QString <a name="f19"></a>CustomEdit::upperLine() const{ return upperLineText;}<a name="f20"></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-><a href="qlineedit.html#setAlignment">setAlignment</a>( Qt::AlignRight ); <a href="qpushbutton.html">QPushButton</a> *saveButton = new <a href="qpushbutton.html">QPushButton</a>( "&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-><a href="qgridlayout.html#addWidget">addWidget</a>( forenameLabel, 0, 0 ); grid-><a href="qgridlayout.html#addWidget">addWidget</a>( forenameEdit, 0, 1 ); grid-><a href="qgridlayout.html#addWidget">addWidget</a>( surnameLabel, 1, 0 ); grid-><a href="qgridlayout.html#addWidget">addWidget</a>( surnameEdit, 1, 1 ); grid-><a href="qgridlayout.html#addWidget">addWidget</a>( salaryLabel, 2, 0 ); grid-><a href="qgridlayout.html#addWidget">addWidget</a>( salaryEdit, 2, 1 ); grid-><a href="qgridlayout.html#addWidget">addWidget</a>( saveButton, 3, 0 ); grid-><a href="qlayout.html#activate">activate</a>(); staffCursor = new <a href="qsqlcursor.html">QSqlCursor</a>( "staff" ); staffCursor-><a href="qsqlcursor.html#setTrimmed">setTrimmed</a>( "forename", TRUE ); staffCursor-><a href="qsqlcursor.html#setTrimmed">setTrimmed</a>( "surname", TRUE ); idIndex = staffCursor-><a href="qsqlcursor.html#index">index</a>( "id" ); staffCursor-><a href="qsqlcursor.html#select">select</a>( idIndex ); staffCursor-><a href="qsqlquery.html#first">first</a>(); propMap = new <a href="qsqlpropertymap.html">QSqlPropertyMap</a>; propMap-><a href="qsqlpropertymap.html#insert">insert</a>( forenameEdit-><a href="qobject.html#className">className</a>(), "upperLine" ); sqlForm = new <a href="qsqlform.html">QSqlForm</a>( this ); sqlForm-><a href="qsqlform.html#setRecord">setRecord</a>( staffCursor-><a href="qsqlcursor.html#primeUpdate">primeUpdate</a>() ); sqlForm-><a href="qsqlform.html#installPropertyMap">installPropertyMap</a>( propMap ); sqlForm-><a href="qsqlform.html#insert">insert</a>( forenameEdit, "forename" ); sqlForm-><a href="qsqlform.html#insert">insert</a>( surnameEdit, "surname" ); sqlForm-><a href="qsqlform.html#insert">insert</a>( salaryEdit, "salary" ); sqlForm-><a href="qsqlform.html#readFields">readFields</a>();}FormDialog::~FormDialog(){ delete staffCursor;}void <a name="f21"></a>FormDialog::save(){ sqlForm-><a href="qsqlform.html#writeFields">writeFields</a>(); staffCursor-><a href="qsqlcursor.html#update">update</a>(); staffCursor-><a href="qsqlcursor.html#select">select</a>( idIndex ); staffCursor-><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-><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-><a href="qsqldatabase.html#setDatabaseName">setDatabaseName</a>( DB_SALES_DBNAME ); defaultDB-><a href="qsqldatabase.html#setUserName">setUserName</a>( DB_SALES_USER ); defaultDB-><a href="qsqldatabase.html#setPassword">setPassword</a>( DB_SALES_PASSWD ); defaultDB-><a href="qsqldatabase.html#setHostName">setHostName</a>( DB_SALES_HOST ); if ( ! defaultDB-><a href="qsqldatabase.html#open">open</a>() ) { <a href="qapplication.html#qWarning">qWarning</a>( "Failed to open sales database: " + defaultDB-><a href="qsqldatabase.html#lastError">lastError</a>().driverText() ); <a href="qapplication.html#qWarning">qWarning</a>( defaultDB-><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-><a href="qsqldatabase.html#setDatabaseName">setDatabaseName</a>( DB_ORDERS_DBNAME ); oracle-><a href="qsqldatabase.html#setUserName">setUserName</a>( DB_ORDERS_USER ); oracle-><a href="qsqldatabase.html#setPassword">setPassword</a>( DB_ORDERS_PASSWD ); oracle-><a href="qsqldatabase.html#setHostName">setHostName</a>( DB_ORDERS_HOST ); if ( ! oracle-><a href="qsqldatabase.html#open">open</a>() ) { <a href="qapplication.html#qWarning">qWarning</a>( "Failed to open orders database: " + oracle-><a href="qsqldatabase.html#lastError">lastError</a>().driverText() ); <a href="qapplication.html#qWarning">qWarning</a>( oracle-><a href="qsqldatabase.html#lastError">lastError</a>().databaseText() ); return FALSE; } return TRUE;}</pre><!-- eof --><p><address><hr><div align=center><table width=100% cellspacing=0 border=0><tr><td>Copyright © 2002 <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 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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