main.cpp 范例文件

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#include "musicplayer.h"
#include <QApplication>
#include <QCommandLineParser>
#include <QCommandLineOption>
#include <QDesktopWidget>
#include <QFileInfo>
#include <QMimeDatabase>
#include <QSettings>
#include <QIcon>
#include <QDir>
#include <QUrl>
static bool associateFileTypes()
{
    QString displayName = QGuiApplication::applicationDisplayName();
    QString filePath = QCoreApplication::applicationFilePath();
    QString fileName = QFileInfo(filePath).fileName();
    const QString key = QStringLiteral("HKEY_CURRENT_USER\\Software\\Classes\\Applications\\") + fileName;
    QSettings settings(key, QSettings::NativeFormat);
    if (settings.status() != QSettings::NoError) {
        qWarning() << "Cannot access registry key" << key;
        return false;
    }
    settings.setValue(QStringLiteral("FriendlyAppName"), displayName);
    settings.beginGroup(QStringLiteral("SupportedTypes"));
    QMimeDatabase mimeDatabase;
    const QStringList supportedMimeTypes = MusicPlayer::supportedMimeTypes();
    for (const QString &fileType : supportedMimeTypes) {
        const QStringList suffixes = mimeDatabase.mimeTypeForName(fileType).suffixes();
        for (QString suffix : suffixes) {
            suffix.prepend('.');
            settings.setValue(suffix, QString());
        }
    }
    settings.endGroup();
    settings.beginGroup(QStringLiteral("shell"));
    settings.beginGroup(QStringLiteral("open"));
    settings.setValue(QStringLiteral("FriendlyAppName"), displayName);
    settings.beginGroup(QStringLiteral("Command"));
    settings.setValue(QStringLiteral("."),
                      QLatin1Char('"') + QDir::toNativeSeparators(filePath) + QStringLiteral("\" \"%1\""));
    return true;
}
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QCoreApplication::setApplicationName(QStringLiteral("MusicPlayer"));
    QCoreApplication::setApplicationVersion( QLatin1String(QT_VERSION_STR));
    QCoreApplication::setOrganizationName(QStringLiteral("QtWinExtras"));
    QCoreApplication::setOrganizationDomain("qt-project.org");
    QGuiApplication::setApplicationDisplayName(QStringLiteral("QtWinExtras Music Player"));
    if (!associateFileTypes())
        return -1;
    QCommandLineParser parser;
    parser.setApplicationDescription(QGuiApplication::applicationDisplayName());
    parser.addHelpOption();
    parser.addVersionOption();
    parser.addPositionalArgument(QStringLiteral("url"), MusicPlayer::tr("The URL to open."));
    parser.process(app);
    MusicPlayer player;
    if (!parser.positionalArguments().isEmpty())
        player.playUrl(QUrl::fromUserInput(parser.positionalArguments().constFirst(), QDir::currentPath(), QUrl::AssumeLocalFile));
    const QRect availableGeometry = QApplication::desktop()->availableGeometry(&player);
    player.resize(availableGeometry.width() / 6, availableGeometry.height() / 17);
    player.show();
    return app.exec();
}