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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtWinExtras module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtWin>
#include <QGuiApplication>
#include <QScopedArrayPointer>
#include <QStringList>
#include <QPixmap>
#include <QImage>
#include <QFileInfo>
#include <QDir>
#include <iostream>
/* This example demonstrates the Windows-specific image conversion
* functions. */
int main(int argc, char *argv[])
{
QGuiApplication a(argc, argv);
QStringList arguments = QCoreApplication::arguments();
arguments.pop_front();
const bool large = !arguments.isEmpty() && arguments.front() == "-l";
if (large)
arguments.pop_front();
if (arguments.size() < 1) {
std::cout << "Usage: iconextractor [OPTIONS] FILE [IMAGE_FILE_FOLDER]\n\n"
"Extracts Windows icons from executables, DLL or icon files\n"
"and writes them out as numbered .png-files.\n\n"
"Options: -l Extract large icons.\n\n"
"Based on Qt " << QT_VERSION_STR << "\n";
return 1;
}
const QString sourceFile = arguments.at(0);
QString imageFileRoot = arguments.size() > 1 ? arguments.at(1) : QDir::currentPath();
const QFileInfo imageFileRootInfo(imageFileRoot);
if (!imageFileRootInfo.isDir()) {
std::cerr << imageFileRoot.toStdString() << " is not a directory.\n";
return 1;
}
const UINT iconCount = ExtractIconEx((wchar_t *)sourceFile.utf16(), -1, 0, 0, 0);
if (!iconCount) {
std::cerr << sourceFile.toStdString() << " does not appear to contain icons.\n";
return 1;
}
QScopedArrayPointer<HICON> icons(new HICON[iconCount]);
const UINT extractedIconCount = large ?
ExtractIconEx((wchar_t *)sourceFile.utf16(), 0, icons.data(), 0, iconCount) :
ExtractIconEx((wchar_t *)sourceFile.utf16(), 0, 0, icons.data(), iconCount);
if (!extractedIconCount) {
qErrnoWarning("Failed to extract icons from %s", qPrintable(sourceFile));
return 1;
}
std::cout << sourceFile.toStdString() << " contains " << extractedIconCount << " icon(s).\n";
imageFileRoot = imageFileRootInfo.absoluteFilePath() + QLatin1Char('/') + QFileInfo(sourceFile).baseName();
for (UINT i = 0; i < extractedIconCount; ++i) {
const QPixmap pixmap = QtWin::fromHICON(icons[i]);
if (pixmap.isNull()) {
std::cerr << "Error converting icons.\n";
return 1;
}
const QString fileName = QString::fromLatin1("%1%2.png").arg(imageFileRoot)
.arg(i, 3, 10, QLatin1Char('0'));
if (!pixmap.save(fileName)) {
std::cerr << "Error writing image file " << fileName.toStdString() << ".\n";
return 1;
}
std::cout << "Wrote image file "
<< QDir::toNativeSeparators(fileName).toStdString() << ".\n";
}
return 0;
}
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