How to show progress in windows 7 taskbar (using Qt)?

Is there a way to access the windows 7 progress bar with Qt? I'm currently using Qt 4.7.0 with Qt Cre开发者_StackOverflow社区ator.

I already found Q7Goodies but unfortunately it is not free. So it seems to be possible - how can I access to the progress bar by hand (without Visual Studio)?

I think they used Win7 API functions and encapsulated them in their library. You can include by hand those headers and use them too. Here you can find a help topic and demo project: codeproject.com/KB/vista/SevenGoodiesTaskbarStatus.aspx

But its only for win7. Not crossplatform. Good luck

update mar 05, 2014

This question was asked a long time ago and many things have changed since. For those asking themselves the same question today (beginnings of 2014) then my personal answer is that Qt 5 fully supports progress in taskbar and different kind of beautiful extras. See QWinTaskbarProgress (upd nov 28, 2016) for details

You can use the QWinTaskbarProgress class. To use this class, you need to add win32:QT += winextras in your .pro file.

Here is an example code showing how to show the value of a QProgressBar in the Windows task bar (inspired from this example):

#ifdef _WIN32    //The _WIN32 macro is automatically generated when compiling for Windows
    #include <QWinTaskbarProgress>
    #include <QWinTaskbarButton>
#endif
QProgressBar *progressBar = new QProgressBar;
progressBar->show();
#ifdef _WIN32
    QWinTaskbarButton *windowsTaskbarButton = new QWinTaskbarButton;    //Create the taskbar button which will show the progress
    windowsTaskbarButton->setWindow(progressBar->windowHandle());    //Associate the taskbar button to the progress bar, assuming that the progress bar is its own window
    QWinTaskbarProgress *windowsTaskbarProgress = windowsTaskbarButton->progress();
    windowsTaskbarProgress->show();
    QObject::connect(loadingWindow, &QProgressBar::valueChanged, [windowsTaskbarProgress](int value){
        windowsTaskbarProgress->setValue(value);   //Change the value of the progress in the taskbar when the value of the progress bar changes
    });
#endif