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var vcRedistRegistryValue = "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\10.0\\VC\\VCRedist\\x86\\Installed";
var installVcRedist = false;
// constructor
function Component()
{
    var ifwVersion = installer.value("FrameworkVersion");
    var isOldIfwVersion = installer.versionMatches(ifwVersion, "<4.4.0");
    // only install c runtime if it is needed, no minor version check of the c runtime till we need it
    if ((isOldIfwVersion && installer.value(vcRedistRegistryValue) != 1)
            || (!isOldIfwVersion && installer.value(vcRedistRegistryValue, 0, QSettings.Registry32Format) != 1)) {
        component.setValue("RequiresAdminRights", "true");
        installVcRedist = true;
    }
}

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();
    if (installVcRedist) {
        // return value 3010 means it need a reboot, but in most cases it is not needed for run 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        // return value 5100 means there's a newer version of the runtime already installed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_x86.exe", "/norestart", "/q");
    }
}