main.cpp Example File
iconextractor/main.cpp/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtWinExtras module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** 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 https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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 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 ** "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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #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; }