![]() |
Home · All Classes · All Functions · Overviews |
/**************************************************************************** ** ** 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 examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Commercial License Agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Nokia. ** ** 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. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** $QT_END_LICENSE$ ** ****************************************************************************/ #include <QtGui> // ![0] #include <QtGui/QX11Info> #include <X11/Xlib.h> #include <X11/Xatom.h> // ![0] class ZoomWidget : public QWidget { Q_OBJECT public: ZoomWidget() { QVBoxLayout *layout = new QVBoxLayout(this); progressBar = new QProgressBar; progressBar->setValue(50); layout->addWidget(new QLabel("<p align=\"center\">Please press the zoom keys</p>")); layout->addWidget(progressBar); grabZoomKeys(true); } // ![1] void grabZoomKeys(bool grab) { if (!winId()) { qWarning("Can't grab keys unless we have a window id"); return; } unsigned long val = (grab) ? 1 : 0; Atom atom = XInternAtom(QX11Info::display(), "_HILDON_ZOOM_KEY_ATOM", False); if (!atom) { qWarning("Unable to obtain _HILDON_ZOOM_KEY_ATOM. This example will only work " "on a Maemo 5 device!"); return; } XChangeProperty (QX11Info::display(), winId(), atom, XA_INTEGER, 32, PropModeReplace, reinterpret_cast<unsigned char *>(&val), 1); } // ![1] protected: // ![2] void keyPressEvent(QKeyEvent* event) { switch (event->key()) { case Qt::Key_F7: progressBar->setValue(progressBar->value() + 1); event->accept(); break; case Qt::Key_F8: progressBar->setValue(progressBar->value() - 1); event->accept(); break; } QWidget::keyPressEvent(event); } // ![2] private: QProgressBar *progressBar; }; int main(int argc, char *argv[]) { QApplication app(argc, argv); ZoomWidget w; w.show(); return app.exec(); } #include "main.moc"
Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies) | Trademarks | Qt 4.6.2 |