error: passing ‘const QSettings’ as ‘this’ argument discards qualifiers

[cerr]

Hi,

I seem not to be able to resolve the foillowing error:
error: passing ‘const QSettings’ as ‘this’ argument discards qualifiers

I've got the following:

class scaper :QMainWindow{
    private:
        QString CmdStrBuild(const QSettings *settings, const QString &grp) const;
        const QSettings *sttngs

int scaper::ToolCmdExec() {
	int rv = OK;
	QStringList cmdlist;
	QStringList groups = sttngs->childGroups();
	foreach (const QString &grp, groups) {
	dbg_prnt << "grp: " << grp.toStdString() << std::endl;
	   cmdlist << CmdStrBuild(sttngs,grp);
	}
	foreach (const QString &cmd, cmdlist) {
	dbg_prnt << "cmd: " << cmd.toStdString();
	}
	return rv;

}
//-------------------------------------------------------------------------------------------------

QString scaper::CmdStrBuild(const QSettings *settings, const QString &grp) const {
	QString cmd = "";
	settings->beginGroup(grp);
	optnslst = new QListWidget(this);
	foreach(const QString &key, sttngs->childKeys()) {
		item = new QListWidgetItem(optnslst);
		if(sttngs->value(key).toInt()) {
			dbg_prnt << key.toStdString() << " is checked" <<std::endl;
			cmd +=" " +key;

	}
	
	sttngs->endGroup();
	return cmd;
}

The compiler points at this line settings->beginGroup(grp); Is the soilution to reimplement beginGroup() as const or am I misunderstanding this altogether?

Thanks for any help!

[aha_1980]

hi @cerr,

you are in a const member function and therefore cannot change member variables. From the given context, I guess thats whats happens.

Regards