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

Question

Is there a way to access the windows 7 progress bar with Qt? I\'m currently using Qt 4.7.0 with Qt Creator.

I already found Q7Goodies but unfortunately it is not free. S

Answer 1

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 
    #include 
#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