How could we detect users vcredist installed when using Qt Installer Framework

[jiancaiyang]

I am using Qt Installer Framework. I use MSVC 2015 as compiler to build our product.
Then when installing on target machine, vcredist_x86.msi will be installed too, but I need to know whether client has installed vcredist bundle so that not to bother client.

[Chris Kawa]

It's not a direct answer to your question but you can install the redist in quiet mode (the /install /quiet switches) so it won't bother the user and it will do nothing if it's already installed.

[Laurent Schall]

the /install /quiet switches are working fine unless the host is already containing a newer version of the redistributables. In this case vcredist will fail with error 1638 that should be ignored - the problem is that there is no switch to ignore automatically when this error shows up - so users might face that.

[iieklund]

@Laurent-Schall said in How could we detect users vcredist installed when using Qt Installer Framework:

gnore automatically when this error shows up - so users might face that.![alt tex

Would this help you?

Component.prototype.createOperations = function()
{
    // Call the base createOperations and afterwards set some registry settings
    // so that the simulator finds its fonts and applications find the simulator
    component.createOperations();

    // return value 3010 means it need a reboot, but in most cases it is not needed for running Qt application
    // return value 5100 means there's a newer version of the runtime already installed
    component.addElevatedOperation("Execute", "{0,3010,1638,5100}", "@TargetDir@\\vcredist\\vcredist_x64.exe", "/norestart", "/q");
}

[SecondFlight]

You can add this to the Controller() function in your installer script:

function Controller() {
    installer.setMessageBoxAutomaticAnswer("installationErrorWithRetry", QMessageBox.Ignore);
    installer.setMessageBoxAutomaticAnswer("installationError", QMessageBox.Ignore);
}

This will automatically click "ignore" on the message box that comes up when the Visual C++ redistributable is already installed.

See the docs for more info.