これで行けました。

function Controller()
{

}

Controller.prototype.FinishedPageCallback = function()
{
buttons.CommitButton.hide();
}

Solution:

Controller.prototype.IntroductionPageCallback = function() { // Installer is "updater" when it is run with "--updater" // or Controller does "installer.setUpdater()" if (installer.isUpdater()) { var widget = gui.currentPageWidget(); // Same as gui.pageById(QInstaller.Introduction); widget.findChild("UpdaterRadioButton").checked = true; // Disable paint events on these widgets, through the QWidget::updatesEnabled property. // I tried with the "visible" property, but it is not enough, because for some reason // that property gets reset under some conditions. For example, if "Next" button is pressed // and no updates are available. widget.findChild("PackageManagerRadioButton").updatesEnabled = false; widget.findChild("UninstallerRadioButton").updatesEnabled = false; } }

Hi, I got the same problem.

Now it seems solved using latest IFW release but I got some warnings.

I posted a bugreport:
https://bugreports.qt.io/browse/QTIFW-822

Hi, and welcome to the Qt Dev Net!

@SCrash said:

I want to use a stable version, but there are several versions (1.5, 1.6 and 2.0).
Which of them is stable enough to use ?

The latest released (stable) version is 1.5: https://www.qt.io/download-open-source/ (click "Other Downloads" to see the version numbers)