📄 sql-overview-table4-main-cpp.html
字号:
<!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:54 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>sql/overview/table4/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/table4/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="f12"></a>StatusPicker::StatusPicker( <a href="qwidget.html">QWidget</a> *parent, const char *name ) : <a href="qcombobox.html">QComboBox</a>( parent, name ){ <a href="qsqlcursor.html">QSqlCursor</a> cur( "status" ); cur.<a href="qsqlcursor.html#select">select</a>( cur.<a href="qsqlcursor.html#index">index</a>( "name" ) ); int i = 0; while ( cur.<a href="qsqlquery.html#next">next</a>() ) { <a href="qcombobox.html#insertItem">insertItem</a>( cur.<a href="qsqlquery.html#value">value</a>( "name" ).toString(), i ); index2id[i] = cur.<a href="qsqlquery.html#value">value</a>( "id" ).toInt(); i++; }}int <a name="f13"></a>StatusPicker::statusId() const{ return index2id[ currentItem() ];}void <a name="f14"></a>StatusPicker::setStatusId( int statusid ){ QMap<int,int>::Iterator it; for ( it = index2id.begin(); it != index2id.end(); ++it ) { if ( it.data() == statusid ) { setCurrentItem( it.key() ); break; } }}void CustomTable::<a href="qdatatable.html#paintField">paintField</a>( <a href="qpainter.html">QPainter</a> * p, const <a href="qsqlfield.html">QSqlField</a>* field, const <a href="qrect.html">QRect</a> & cr, bool b){ if ( !field ) return; if ( field-><a href="qsqlfield.html#name">name</a>() == "statusid" ) { <a href="qsqlquery.html">QSqlQuery</a> query( "SELECT name FROM status WHERE id=" + field-><a href="qsqlfield.html#value">value</a>().toString() ); <a href="qstring.html">QString</a> text; if ( query.<a href="qsqlquery.html#next">next</a>() ) { text = query.<a href="qsqlquery.html#value">value</a>( 0 ).toString(); } p-><a href="qpainter.html#drawText">drawText</a>( 2,2, cr.<a href="qrect.html#width">width</a>()-4, cr.<a href="qrect.html#height">height</a>()-4, fieldAlignment( field ), text ); } else { QDataTable::<a href="qdatatable.html#paintField">paintField</a>( p, field, cr, b) ; }}QWidget *CustomSqlEditorFactory::<a href="qsqleditorfactory.html#createEditor">createEditor</a>( <a href="qwidget.html">QWidget</a> *parent, const <a href="qsqlfield.html">QSqlField</a> *field ){ if ( field-><a href="qsqlfield.html#name">name</a>() == "statusid" ) { <a href="qwidget.html">QWidget</a> *editor = new StatusPicker( parent ); return editor; } return QSqlEditorFactory::createEditor( parent, field );}int main( int argc, char *argv[] ){ <a href="qapplication.html">QApplication</a> app( argc, argv ); if ( createConnections() ) { <a href="qsqlcursor.html">QSqlCursor</a> staffCursor( "staff" ); CustomTable *staffTable = new CustomTable( &staffCursor ); <a href="qsqlpropertymap.html">QSqlPropertyMap</a> *propMap = new <a href="qsqlpropertymap.html">QSqlPropertyMap</a>(); CustomSqlEditorFactory *editorFactory = new CustomSqlEditorFactory(); propMap-><a href="qsqlpropertymap.html#insert">insert</a>( "StatusPicker", "statusid" ); staffTable-><a href="qdatatable.html#installPropertyMap">installPropertyMap</a>( propMap ); staffTable-><a href="qdatatable.html#installEditorFactory">installEditorFactory</a>( editorFactory ); app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( staffTable ); staffTable-><a href="qdatatable.html#addColumn">addColumn</a>( "forename", "Forename" ); staffTable-><a href="qdatatable.html#addColumn">addColumn</a>( "surname", "Surname" ); staffTable-><a href="qdatatable.html#addColumn">addColumn</a>( "salary", "Annual Salary" ); staffTable-><a href="qdatatable.html#addColumn">addColumn</a>( "statusid", "Status" ); <a href="qstringlist.html">QStringList</a> order = QStringList() << "surname" << "forename"; staffTable-><a href="qdatatable.html#setSort">setSort</a>( order ); staffTable-><a href="qdatatable.html#refresh">refresh</a>(); staffTable-><a href="qwidget.html#show">show</a>(); return app.<a href="qapplication.html#exec">exec</a>(); } return 1;}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
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -