diff options
Diffstat (limited to 'doc/src/snippets/code/src_gui_kernel_qwidget.cpp')
-rw-r--r-- | doc/src/snippets/code/src_gui_kernel_qwidget.cpp | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/doc/src/snippets/code/src_gui_kernel_qwidget.cpp b/doc/src/snippets/code/src_gui_kernel_qwidget.cpp new file mode 100644 index 0000000000..d142d56a1a --- /dev/null +++ b/doc/src/snippets/code/src_gui_kernel_qwidget.cpp @@ -0,0 +1,137 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//! [0] +w->setWindowState(w->windowState() ^ Qt::WindowFullScreen); +//! [0] + + +//! [1] +w->setWindowState(w->windowState() & ~Qt::WindowMinimized | Qt::WindowActive); +//! [1] + + +//! [2] +width = baseSize().width() + i * sizeIncrement().width(); +height = baseSize().height() + j * sizeIncrement().height(); +//! [2] + + +//! [3] +aWidget->window()->setWindowTitle("New Window Title"); +//! [3] + + +//! [4] +QFont font("Helvetica", 12, QFont::Bold); +setFont(font); +//! [4] + + +//! [5] +QFont font; +font.setBold(false); +setFont(font); +//! [5] + + +//! [6] +setCursor(Qt::IBeamCursor); +//! [6] + + +//! [7] +QPixmap pixmap(widget->size()); +widget->render(&pixmap); +//! [7] + + +//! [8] +QPainter painter(this); +... +painter.end(); +myWidget->render(this); +//! [8] + + +//! [9] +setTabOrder(a, b); // a to b +setTabOrder(b, c); // a to b to c +setTabOrder(c, d); // a to b to c to d +//! [9] + + +//! [10] +// WRONG +setTabOrder(c, d); // c to d +setTabOrder(a, b); // a to b AND c to d +setTabOrder(b, c); // a to b to c, but not c to d +//! [10] + + +//! [11] +void MyWidget::closeEvent(QCloseEvent *event) +{ + QSettings settings("MyCompany", "MyApp"); + settings.setValue("geometry", saveGeometry()); + QWidget::closeEvent(event); +} +//! [11] + + +//! [12] +QSettings settings("MyCompany", "MyApp"); +myWidget->restoreGeometry(settings.value("myWidget/geometry").toByteArray()); +//! [12] + + +//! [13] +setUpdatesEnabled(false); +bigVisualChanges(); +setUpdatesEnabled(true); +//! [13] + + +//! [14] +... +extern void qt_x11_set_global_double_buffer(bool); +qt_x11_set_global_double_buffer(false); +... +//! [14] |