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<h1 class="title">mainwindow.cpp Example File</h1>
<span class="small-subtitle">widgets/icons/mainwindow.cpp</span>
<!-- $$$widgets/icons/mainwindow.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** &quot;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 The Qt Company Ltd 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
** &quot;AS IS&quot; 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.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="preprocessor">#include &quot;iconpreviewarea.h&quot;</span>
<span class="preprocessor">#include &quot;iconsizespinbox.h&quot;</span>
<span class="preprocessor">#include &quot;imagedelegate.h&quot;</span>
<span class="preprocessor">#include &quot;mainwindow.h&quot;</span>
MainWindow<span class="operator">::</span>MainWindow()
{
centralWidget <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qwidget.html">QWidget</a></span>;
setCentralWidget(centralWidget);
createPreviewGroupBox();
createImagesGroupBox();
createIconSizeGroupBox();
createActions();
createMenus();
createContextMenu();
<span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>;
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(previewGroupBox<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(imagesGroupBox<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(iconSizeGroupBox<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>);
centralWidget<span class="operator">-</span><span class="operator">&gt;</span>setLayout(mainLayout);
setWindowTitle(tr(<span class="string">&quot;Icons&quot;</span>));
checkCurrentStyle();
otherRadioButton<span class="operator">-</span><span class="operator">&gt;</span>click();
resize(minimumSizeHint());
}
<span class="type">void</span> MainWindow<span class="operator">::</span>about()
{
<span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>about(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">&quot;About Icons&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;The &lt;b&gt;Icons&lt;/b&gt; example illustrates how Qt renders an icon in &quot;</span>
<span class="string">&quot;different modes (active, normal, disabled, and selected) and &quot;</span>
<span class="string">&quot;states (on and off) based on a set of images.&quot;</span>));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>changeStyle(<span class="type">bool</span> checked)
{
<span class="keyword">if</span> (<span class="operator">!</span>checked)
<span class="keyword">return</span>;
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span><span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span><span class="operator">&gt;</span>(sender());
<span class="type"><a href="qstyle.html">QStyle</a></span> <span class="operator">*</span>style <span class="operator">=</span> <span class="type"><a href="qstylefactory.html">QStyleFactory</a></span><span class="operator">::</span>create(action<span class="operator">-</span><span class="operator">&gt;</span>data()<span class="operator">.</span>toString());
Q_ASSERT(style);
<span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>setStyle(style);
smallRadioButton<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Small (%1 x %1)&quot;</span>)
<span class="operator">.</span>arg(style<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_SmallIconSize)));
largeRadioButton<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Large (%1 x %1)&quot;</span>)
<span class="operator">.</span>arg(style<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_LargeIconSize)));
toolBarRadioButton<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Toolbars (%1 x %1)&quot;</span>)
<span class="operator">.</span>arg(style<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_ToolBarIconSize)));
listViewRadioButton<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;List views (%1 x %1)&quot;</span>)
<span class="operator">.</span>arg(style<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_ListViewIconSize)));
iconViewRadioButton<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Icon views (%1 x %1)&quot;</span>)
<span class="operator">.</span>arg(style<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_IconViewIconSize)));
tabBarRadioButton<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Tab bars (%1 x %1)&quot;</span>)
<span class="operator">.</span>arg(style<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_TabBarIconSize)));
changeSize();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>changeSize(<span class="type">bool</span> checked)
{
<span class="keyword">if</span> (<span class="operator">!</span>checked)
<span class="keyword">return</span>;
<span class="type">int</span> extent;
<span class="keyword">if</span> (otherRadioButton<span class="operator">-</span><span class="operator">&gt;</span>isChecked()) {
extent <span class="operator">=</span> otherSpinBox<span class="operator">-</span><span class="operator">&gt;</span>value();
} <span class="keyword">else</span> {
<span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PixelMetric metric;
<span class="keyword">if</span> (smallRadioButton<span class="operator">-</span><span class="operator">&gt;</span>isChecked()) {
metric <span class="operator">=</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_SmallIconSize;
} <span class="keyword">else</span> <span class="keyword">if</span> (largeRadioButton<span class="operator">-</span><span class="operator">&gt;</span>isChecked()) {
metric <span class="operator">=</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_LargeIconSize;
} <span class="keyword">else</span> <span class="keyword">if</span> (toolBarRadioButton<span class="operator">-</span><span class="operator">&gt;</span>isChecked()) {
metric <span class="operator">=</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_ToolBarIconSize;
} <span class="keyword">else</span> <span class="keyword">if</span> (listViewRadioButton<span class="operator">-</span><span class="operator">&gt;</span>isChecked()) {
metric <span class="operator">=</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_ListViewIconSize;
} <span class="keyword">else</span> <span class="keyword">if</span> (iconViewRadioButton<span class="operator">-</span><span class="operator">&gt;</span>isChecked()) {
metric <span class="operator">=</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_IconViewIconSize;
} <span class="keyword">else</span> {
metric <span class="operator">=</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>PM_TabBarIconSize;
}
extent <span class="operator">=</span> <span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>style()<span class="operator">-</span><span class="operator">&gt;</span>pixelMetric(metric);
}
previewArea<span class="operator">-</span><span class="operator">&gt;</span>setSize(<span class="type"><a href="qsize.html">QSize</a></span>(extent<span class="operator">,</span> extent));
otherSpinBox<span class="operator">-</span><span class="operator">&gt;</span>setEnabled(otherRadioButton<span class="operator">-</span><span class="operator">&gt;</span>isChecked());
}
<span class="type">void</span> MainWindow<span class="operator">::</span>changeIcon()
{
<span class="type"><a href="qicon.html">QIcon</a></span> icon;
<span class="keyword">for</span> (<span class="type">int</span> row <span class="operator">=</span> <span class="number">0</span>; row <span class="operator">&lt;</span> imagesTable<span class="operator">-</span><span class="operator">&gt;</span>rowCount(); <span class="operator">+</span><span class="operator">+</span>row) {
<span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span> <span class="operator">*</span>item0 <span class="operator">=</span> imagesTable<span class="operator">-</span><span class="operator">&gt;</span>item(row<span class="operator">,</span> <span class="number">0</span>);
<span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span> <span class="operator">*</span>item1 <span class="operator">=</span> imagesTable<span class="operator">-</span><span class="operator">&gt;</span>item(row<span class="operator">,</span> <span class="number">1</span>);
<span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span> <span class="operator">*</span>item2 <span class="operator">=</span> imagesTable<span class="operator">-</span><span class="operator">&gt;</span>item(row<span class="operator">,</span> <span class="number">2</span>);
<span class="keyword">if</span> (item0<span class="operator">-</span><span class="operator">&gt;</span>checkState() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Checked) {
<span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Mode mode;
<span class="keyword">if</span> (item1<span class="operator">-</span><span class="operator">&gt;</span>text() <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">&quot;Normal&quot;</span>)) {
mode <span class="operator">=</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Normal;
} <span class="keyword">else</span> <span class="keyword">if</span> (item1<span class="operator">-</span><span class="operator">&gt;</span>text() <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">&quot;Active&quot;</span>)) {
mode <span class="operator">=</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Active;
} <span class="keyword">else</span> <span class="keyword">if</span> (item1<span class="operator">-</span><span class="operator">&gt;</span>text() <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">&quot;Disabled&quot;</span>)) {
mode <span class="operator">=</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Disabled;
} <span class="keyword">else</span> {
mode <span class="operator">=</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Selected;
}
<span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>State state;
<span class="keyword">if</span> (item2<span class="operator">-</span><span class="operator">&gt;</span>text() <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">&quot;On&quot;</span>)) {
state <span class="operator">=</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>On;
} <span class="keyword">else</span> {
state <span class="operator">=</span> <span class="type"><a href="qicon.html">QIcon</a></span><span class="operator">::</span>Off;
}
<span class="type"><a href="qstring.html">QString</a></span> fileName <span class="operator">=</span> item0<span class="operator">-</span><span class="operator">&gt;</span>data(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>UserRole)<span class="operator">.</span>toString();
<span class="type"><a href="qimage.html">QImage</a></span> image(fileName);
<span class="keyword">if</span> (<span class="operator">!</span>image<span class="operator">.</span>isNull())
icon<span class="operator">.</span>addPixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span><span class="operator">::</span>fromImage(image)<span class="operator">,</span> mode<span class="operator">,</span> state);
}
}
previewArea<span class="operator">-</span><span class="operator">&gt;</span>setIcon(icon);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>addImages()
{
<span class="type"><a href="qstringlist.html">QStringList</a></span> fileNames <span class="operator">=</span> <span class="type"><a href="qfiledialog.html">QFileDialog</a></span><span class="operator">::</span>getOpenFileNames(<span class="keyword">this</span><span class="operator">,</span>
tr(<span class="string">&quot;Open Images&quot;</span>)<span class="operator">,</span> <span class="string">&quot;&quot;</span><span class="operator">,</span>
tr(<span class="string">&quot;Images (*.png *.xpm *.jpg);;&quot;</span>
<span class="string">&quot;All Files (*)&quot;</span>));
<span class="keyword">if</span> (<span class="operator">!</span>fileNames<span class="operator">.</span>isEmpty()) {
foreach (<span class="type"><a href="qstring.html">QString</a></span> fileName<span class="operator">,</span> fileNames) {
<span class="type">int</span> row <span class="operator">=</span> imagesTable<span class="operator">-</span><span class="operator">&gt;</span>rowCount();
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setRowCount(row <span class="operator">+</span> <span class="number">1</span>);
<span class="type"><a href="qstring.html">QString</a></span> imageName <span class="operator">=</span> <span class="type"><a href="qfileinfo.html">QFileInfo</a></span>(fileName)<span class="operator">.</span>baseName();
<span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span> <span class="operator">*</span>item0 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span>(imageName);
item0<span class="operator">-</span><span class="operator">&gt;</span>setData(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>UserRole<span class="operator">,</span> fileName);
item0<span class="operator">-</span><span class="operator">&gt;</span>setFlags(item0<span class="operator">-</span><span class="operator">&gt;</span>flags() <span class="operator">&amp;</span> <span class="operator">~</span><span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ItemIsEditable);
<span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span> <span class="operator">*</span>item1 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span>(tr(<span class="string">&quot;Normal&quot;</span>));
<span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span> <span class="operator">*</span>item2 <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span>(tr(<span class="string">&quot;Off&quot;</span>));
<span class="keyword">if</span> (guessModeStateAct<span class="operator">-</span><span class="operator">&gt;</span>isChecked()) {
<span class="keyword">if</span> (fileName<span class="operator">.</span>contains(<span class="string">&quot;_act&quot;</span>)) {
item1<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Active&quot;</span>));
} <span class="keyword">else</span> <span class="keyword">if</span> (fileName<span class="operator">.</span>contains(<span class="string">&quot;_dis&quot;</span>)) {
item1<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Disabled&quot;</span>));
} <span class="keyword">else</span> <span class="keyword">if</span> (fileName<span class="operator">.</span>contains(<span class="string">&quot;_sel&quot;</span>)) {
item1<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;Selected&quot;</span>));
}
<span class="keyword">if</span> (fileName<span class="operator">.</span>contains(<span class="string">&quot;_on&quot;</span>))
item2<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;On&quot;</span>));
}
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setItem(row<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> item0);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setItem(row<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> item1);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setItem(row<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> item2);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>openPersistentEditor(item1);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>openPersistentEditor(item2);
item0<span class="operator">-</span><span class="operator">&gt;</span>setCheckState(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Checked);
}
}
}
<span class="type">void</span> MainWindow<span class="operator">::</span>removeAllImages()
{
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setRowCount(<span class="number">0</span>);
changeIcon();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createPreviewGroupBox()
{
previewGroupBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(tr(<span class="string">&quot;Preview&quot;</span>));
previewArea <span class="operator">=</span> <span class="keyword">new</span> IconPreviewArea;
<span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>;
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(previewArea);
previewGroupBox<span class="operator">-</span><span class="operator">&gt;</span>setLayout(layout);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createImagesGroupBox()
{
imagesGroupBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(tr(<span class="string">&quot;Images&quot;</span>));
imagesTable <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtablewidget.html">QTableWidget</a></span>;
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setSelectionMode(<span class="type"><a href="qabstractitemview.html">QAbstractItemView</a></span><span class="operator">::</span>NoSelection);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setItemDelegate(<span class="keyword">new</span> ImageDelegate(<span class="keyword">this</span>));
<span class="type"><a href="qstringlist.html">QStringList</a></span> labels;
labels <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;Image&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;Mode&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;State&quot;</span>);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>horizontalHeader()<span class="operator">-</span><span class="operator">&gt;</span>setDefaultSectionSize(<span class="number">90</span>);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setColumnCount(<span class="number">3</span>);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setHorizontalHeaderLabels(labels);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>horizontalHeader()<span class="operator">-</span><span class="operator">&gt;</span>setResizeMode(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Stretch);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>horizontalHeader()<span class="operator">-</span><span class="operator">&gt;</span>setResizeMode(<span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Fixed);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>horizontalHeader()<span class="operator">-</span><span class="operator">&gt;</span>setResizeMode(<span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Fixed);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>verticalHeader()<span class="operator">-</span><span class="operator">&gt;</span>hide();
connect(imagesTable<span class="operator">,</span> SIGNAL(itemChanged(<span class="type"><a href="qtablewidgetitem.html">QTableWidgetItem</a></span><span class="operator">*</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(changeIcon()));
<span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>;
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(imagesTable);
imagesGroupBox<span class="operator">-</span><span class="operator">&gt;</span>setLayout(layout);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createIconSizeGroupBox()
{
iconSizeGroupBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(tr(<span class="string">&quot;Icon Size&quot;</span>));
smallRadioButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>;
largeRadioButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>;
toolBarRadioButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>;
listViewRadioButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>;
iconViewRadioButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>;
tabBarRadioButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>;
otherRadioButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(tr(<span class="string">&quot;Other:&quot;</span>));
otherSpinBox <span class="operator">=</span> <span class="keyword">new</span> IconSizeSpinBox;
otherSpinBox<span class="operator">-</span><span class="operator">&gt;</span>setRange(<span class="number">8</span><span class="operator">,</span> <span class="number">128</span>);
otherSpinBox<span class="operator">-</span><span class="operator">&gt;</span>setValue(<span class="number">64</span>);
connect(smallRadioButton<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(changeSize(<span class="type">bool</span>)));
connect(largeRadioButton<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(changeSize(<span class="type">bool</span>)));
connect(toolBarRadioButton<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(changeSize(<span class="type">bool</span>)));
connect(listViewRadioButton<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(changeSize(<span class="type">bool</span>)));
connect(iconViewRadioButton<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(changeSize(<span class="type">bool</span>)));
connect(tabBarRadioButton<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(changeSize(<span class="type">bool</span>)));
connect(otherRadioButton<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(changeSize(<span class="type">bool</span>)));
connect(otherSpinBox<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(changeSize()));
<span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>otherSizeLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>;
otherSizeLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(otherRadioButton);
otherSizeLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(otherSpinBox);
otherSizeLayout<span class="operator">-</span><span class="operator">&gt;</span>addStretch();
<span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>;
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(smallRadioButton<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(largeRadioButton<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(toolBarRadioButton<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(listViewRadioButton<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(iconViewRadioButton<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(tabBarRadioButton<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>addLayout(otherSizeLayout<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>);
layout<span class="operator">-</span><span class="operator">&gt;</span>setRowStretch(<span class="number">4</span><span class="operator">,</span> <span class="number">1</span>);
iconSizeGroupBox<span class="operator">-</span><span class="operator">&gt;</span>setLayout(layout);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createActions()
{
addImagesAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Add Images...&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
addImagesAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+A&quot;</span>));
connect(addImagesAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(addImages()));
removeAllImagesAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Remove All Images&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
removeAllImagesAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+R&quot;</span>));
connect(removeAllImagesAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(removeAllImages()));
exitAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Quit&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
exitAct<span class="operator">-</span><span class="operator">&gt;</span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Quit);
connect(exitAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close()));
styleActionGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qactiongroup.html">QActionGroup</a></span>(<span class="keyword">this</span>);
foreach (<span class="type"><a href="qstring.html">QString</a></span> styleName<span class="operator">,</span> <span class="type"><a href="qstylefactory.html">QStyleFactory</a></span><span class="operator">::</span>keys()) {
<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(styleActionGroup);
action<span class="operator">-</span><span class="operator">&gt;</span>setText(tr(<span class="string">&quot;%1 Style&quot;</span>)<span class="operator">.</span>arg(styleName));
action<span class="operator">-</span><span class="operator">&gt;</span>setData(styleName);
action<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
connect(action<span class="operator">,</span> SIGNAL(triggered(<span class="type">bool</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(changeStyle(<span class="type">bool</span>)));
}
guessModeStateAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;Guess Image Mode/State&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
guessModeStateAct<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
guessModeStateAct<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
aboutAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;&amp;About&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
connect(aboutAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(about()));
aboutQtAct <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">&quot;About &amp;Qt&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
connect(aboutQtAct<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> qApp<span class="operator">,</span> SLOT(aboutQt()));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createMenus()
{
fileMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;File&quot;</span>));
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(addImagesAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(removeAllImagesAct);
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(exitAct);
viewMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;View&quot;</span>));
foreach (<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action<span class="operator">,</span> styleActionGroup<span class="operator">-</span><span class="operator">&gt;</span>actions())
viewMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(action);
viewMenu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
viewMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(guessModeStateAct);
menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
helpMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;Help&quot;</span>));
helpMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(aboutAct);
helpMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(aboutQtAct);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createContextMenu()
{
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>setContextMenuPolicy(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ActionsContextMenu);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>addAction(addImagesAct);
imagesTable<span class="operator">-</span><span class="operator">&gt;</span>addAction(removeAllImagesAct);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>checkCurrentStyle()
{
foreach (<span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action<span class="operator">,</span> styleActionGroup<span class="operator">-</span><span class="operator">&gt;</span>actions()) {
<span class="type"><a href="qstring.html">QString</a></span> styleName <span class="operator">=</span> action<span class="operator">-</span><span class="operator">&gt;</span>data()<span class="operator">.</span>toString();
<span class="type"><a href="qstyle.html">QStyle</a></span> <span class="operator">*</span>candidate <span class="operator">=</span> <span class="type"><a href="qstylefactory.html">QStyleFactory</a></span><span class="operator">::</span>create(styleName);
Q_ASSERT(candidate);
<span class="keyword">if</span> (candidate<span class="operator">-</span><span class="operator">&gt;</span>metaObject()<span class="operator">-</span><span class="operator">&gt;</span>className()
<span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>style()<span class="operator">-</span><span class="operator">&gt;</span>metaObject()<span class="operator">-</span><span class="operator">&gt;</span>className()) {
action<span class="operator">-</span><span class="operator">&gt;</span>trigger();
<span class="keyword">return</span>;
}
<span class="keyword">delete</span> candidate;
}
}</pre>
</div>
<!-- @@@widgets/icons/mainwindow.cpp -->
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