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Using JumpList to store files opened in the application when using Qt

winExtras, jumpList

JumpList, one of the features that are present only in Windows (version 7 and above). In this sheet, in particular, you can store links to the most recently opened files in the application.

To use this function, you need to

1. Connect the module

QT += winextras

2. Connect library

#include <QtWinExtras>

3. Make the appropriate JumpList section active

QWinJumpList jumplist;
jumplist.recent()->setVisible(true);

4. Associate all the required file extensions with our application using the function

static void associateFileTypes(const QStringList &fileTypes)
{
    QString displayName = QGuiApplication::applicationDisplayName();
    QString filePath = QCoreApplication::applicationFilePath();
    QString fileName = QFileInfo(filePath).fileName();
    QSettings settings("HKEY_CURRENT_USER\\Software\\Classes\\Applications\\" + fileName, QSettings::NativeFormat);
    settings.setValue("FriendlyAppName", displayName);
    settings.beginGroup("SupportedTypes");
    foreach (const QString& fileType, fileTypes)
        settings.setValue(fileType, QString());
    settings.endGroup();
    settings.beginGroup("shell");
    settings.beginGroup("open");
    settings.setValue("FriendlyAppName", displayName);
    settings.beginGroup("Command");
    settings.setValue(".", QChar('"') + QDir::toNativeSeparators(filePath) + QString("\" \"%1\""));
}

Which is convenient to use in the main

QApplication a(argc, argv);
a.setApplicationDisplayName("QtWinExtras Test");
associateFileTypes(QStringList(".txt"));

Now when you open a new file, a link to it will be added to the last JumpList section.

When clicking on one of the links that appears, our application will start with the file name as the second parameter (argv [1]). With such a configuration, it is reasonable to modify the main function so that the selected file is opened.

if(argc == 2)
        w.open(QString::fromLocal8Bit(argv[1]).replace(QString("\\"),QString("/")));

It is also possible to implement when, when the application is started, it is checked if there is a copy of it running. If such a copy is found, the application will send the name of the selected file to it and finish its work. I wrote the following implementation, where the name of the file is written to the registry.

    HANDLE hCorvetEvent = CreateEventA(NULL, FALSE, FALSE, ("winExJumpList"));
    if (GetLastError() ==  ERROR_ALREADY_EXISTS)
    {
        if(argc == 2)
        {
            QSettings *settings;
            settings = new QSettings("Company", "my programm");
            settings->setValue("AddFile", QString::fromLocal8Bit(argv[1]).replace(QString("\\"),QString("/") ) ); 
           CloseHandle(hCorvetEvent);
        }
        return 0;
    }

The program uses a timer-based function to monitor the registry change and open the added file.

connect(ui->pushButton, &QPushButton::clicked, this, &MainWindow::openFile);
    QTimer *openFile = new QTimer;
    connect(openFile, &QTimer::timeout, this, &MainWindow::nextFile);
    openFile->start(500);
void MainWindow::nextFile()
{
    QSettings *settings;
    settings = new QSettings("Company", "my programm");
    QString s = settings->value("AddFile").toString();
    if(!s.isEmpty())
    {
        settings->setValue("AddFile", "");
        open(s);
    }
}

Naturally, you will see the work of the program after you add the libraries necessary for the snack to the compiled exe-file.

Project with source code of the program

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c
This is a nice start to learning how to use QWinJumplist but the demo files do not work when I try to load a file from the jump list Windows can't find the location of the file.
c

Unless I right click on the Recent items and select to open the txt file through a second context menu as opposed to a straight double click of the item.

Comments

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МБ
April 21, 2019, 9:40 a.m.
Моисей Бушуев

Qt - Test 001. Signals and slots

  • Result:0points,
  • Rating points-10
AA
April 17, 2019, 7:40 p.m.
Anton Ablin

Qt - Test 001. Signals and slots

  • Result:73points,
  • Rating points1
E
April 17, 2019, 6:16 p.m.
Evgeny

Qt - Test 001. Signals and slots

  • Result:100points,
  • Rating points10
Last comments
April 21, 2019, 4:22 p.m.
Евгений Легоцкой

Через метод setIcon table.horizontalHeaderItem(0).setIcon("qrc://path/to/icon.png")
April 21, 2019, 3:48 p.m.
Евгений Легоцкой

Добрый день! Спасибо за комментарий. Там действительно лучше будет сделать с инициализацией по умолчанию.
U
April 18, 2019, 3:37 p.m.
Unreal_man

А как иконку в хедер задать?
u
April 18, 2019, 2:15 a.m.
uaa

доброго времени,большое спасибо за пример для начинающего)при адаптации к своему проекту столкнулся с таким ньансом:в vepolyline.h в 47 строке нужна инициализация по умолчанию: int m_pointF...
E
April 11, 2019, 12:49 p.m.
Evgeny

Спасибо за ответ) У меня компоновщик на нее ругался просто. Оказалось, просто забыл Q_OBJECT в начале класса указать.
Now discuss on the forum
April 24, 2019, 11:22 a.m.
Ruslan Polupan

Согласен. но ситуация не поменялась. Такое чуство что данные не записываются в модель.
April 24, 2019, 6:20 a.m.
Ruslan Polupan

я так понимаю надо инфорация об устройствах.Я бы пробовал так rust@suse:~> lsblk -PNAME="sda" MAJ:MIN="8:0" RM="0" SIZE="111,8G" RO="0" TYPE="disk" MOUNTPOINT=""NAME="sda1" MAJ:MIN="8...
April 21, 2019, 4:16 p.m.
Евгений Легоцкой

Приветствую Нужно сохранять где-то выбранное значение, а потом восстанавливать его. Или использовать QSettings или добавить метод open(), в который передавать начальные значения для того...
R
April 19, 2019, 9:55 a.m.
RED_Spider

мені важко це зараз навіть перевірити, тому що знайшов коміт, це ще було в 2016 році, і цей код не буде працювати коректно зараз, єдине скажу що це були QThread
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