diff -r 41300fa6a67c -r f7bc934e204c doc/src/snippets/customstyle/customstyle.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/snippets/customstyle/customstyle.cpp	Wed Mar 31 11:06:36 2010 +0300
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "customstyle.h"
+
+CustomStyle::CustomStyle()
+{
+//! [0]
+    QSpinBox *spinBox = qobject_cast<QSpinBox *>(widget);
+    if (spinBox) {
+//! [0] //! [1]
+    }
+//! [1]
+}
+
+//! [2]
+void CustomStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option,
+                                QPainter *painter, const QWidget *widget) const
+{
+    if (element == PE_IndicatorSpinUp || element == PE_IndicatorSpinDown) {
+	QPolygon points(3);
+	int x = option->rect.x();
+	int y = option->rect.y();
+	int w = option->rect.width() / 2;
+	int h = option->rect.height() / 2;
+	x += (option->rect.width() - w) / 2;
+	y += (option->rect.height() - h) / 2;
+
+	if (element == PE_IndicatorSpinUp) {
+	    points[0] = QPoint(x, y + h);
+	    points[1] = QPoint(x + w, y + h);
+	    points[2] = QPoint(x + w / 2, y);
+	} else { // PE_SpinBoxDown
+	    points[0] = QPoint(x, y);
+	    points[1] = QPoint(x + w, y);
+	    points[2] = QPoint(x + w / 2, y + h);
+	}
+
+	if (option->state & State_Enabled) {
+	    painter->setPen(option->palette.mid().color());
+	    painter->setBrush(option->palette.buttonText());
+	} else {
+	    painter->setPen(option->palette.buttonText().color());
+	    painter->setBrush(option->palette.mid());
+	}
+	painter->drawPolygon(points);
+    } else {
+	QWindowsStyle::drawPrimitive(element, option, painter, widget);
+//! [2] //! [3]
+    }
+//! [3] //! [4]
+}
+//! [4]