@koahnig
I don't know who's project the IFW is but could you pass along a request for better documentation? A few times I came across lines like

For more information see ##TODO add link

Just my guess, but I would say it's something as simple as popularity? xz is not widely used on Windows and 7z is kinda universally used/recognized at this point so... I'm guessing it's just a coin-flip decision.

It can indeed, see here: http://doc.qt.io/qtinstallerframework/ifw-online-installers.html

Hi,

What about submitting your work to the Qt project ?

I have not used IFW, but have you seen this page and this page ? Also, this example may provide some help.
Paul

Many thanks @Wieland,

but my problem is with the installer script (sorry for not having explained before (-_-)). The application is fine according to the customer feedback.

Am trying to check the existence of previous installations and if so, check which version is installed. For this, I have created a registry entry containing the application path and installed version, but I don´t know how to compare the current installation version with the previously installed one.

Thanks in advance.

@koahnig I am using 2.0.1

At last I got it to work. The parameter "/reg:64" passed to reg.exe makes it do what it's told. I just hope this won't mess things up on a 32bit windows.

So, that needs to be

component.addElevatedOperation("Execute",reg, "ADD",key, "/reg:64" ,"/v","@TargetDir@\\maintenancetool.exe","/t","REG_SZ","/d","~ RUNASADMIN", "/f");

You can use "UNDOEXECUTE". For example: component.addOperation("Execute", "msiexec", "/i", "xxx.msi", "/quiet", "UNDOEXECUTE", "msiexec", "/x", "xxx.msi");

Hi,
finally I found a solution :)
Instead of using the component, in the controller script constructor i connected the "uninstallationStarted" signal:

[code]
function Controller()
{
// default constructor
installer.uninstallationStarted.connect(onUninstallationStarted);
}

onUninstallationStarted = function()
{
installer.performOperation("Execute", "cmd /C reg delete HKEY_CURRENT_USER\Software\SugarTrumpet\player /f");
}

[/code]

So the performed operation ("deleting the registry key") is executed at the very beginning of uninstallation process with currently logged user credentials. After that the uninstaller asks for administrators permission and continues the un-installation process as under administrator.
Everything bets, Goran.

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; } }