QSettings array increasing the size?

artwaw

Hello, long time no see.

I run into some issue with QSettings that I find hard to understand.
I have an array of visual settings for various components. I update the particular entries based on the user input, nothing special, unusual or complex - or that's what I thought anyway.

I started to get weird settings misalignment, sections were moving about in the array which I find weird. Perhaps I don't understand how those arrays are supposed to work? Here is the functional bit:

void PrefsDialog::defaults(const int type, const int section) {
    qDebug() << "section" << section;
    QSettings settings;
    if (type==PrefsDialog::general||type==PrefsDialog::all) {
        settings.beginGroup("general");
#setValue() calls here
        settings.endGroup();
    }
    if (type==PrefsDialog::visual||type==PrefsDialog::all) {
        if (section==-1) {
            for (auto x=0;x<8;++x) {
                defaultSection(x);
            }
        } else {
            defaultSection(section);
        }
    }
    if (type==PrefsDialog::tls||type==PrefsDialog::all) {
        settings.beginGroup("tls");
#setValue() calls here
        settings.endGroup();
    }
    settings.sync();
}

and a method that is supposed to default each section:

void PrefsDialog::defaultSection(const int idx) {
    QSettings settings;
    settings.beginWriteArray("visual");
    settings.setArrayIndex(idx);
#setValue() calls here
    settings.endArray();
}

The issue: each call to defaultSection() adds entry. So from initial 8, after triggering complete reset, I get 16.
Why, oh why?

(Qt 6.7.2, macOS Sonoma 14.5 but also Windows 11, CMake 3.27.7)

As usual, many thanks in advance!

artwaw

I am closing this topic - since no suggestion was given and I can't figure it out, I need to move on and implement something else that actually works.

SGaist

Hi,

Can you provide a minimal compilable example with some setValue calls ?
That would allow us to reproduce your issue in similar fashion as you.

On a side note, please don't mark threads as solved when they aren't it's misleading for people experiencing the same as you and hoping to find a solution.

artwaw

@SGaist Hi, apologies - didn't want to delete and there was no other option...

EDIT: initial response snippet was unclear! adding more code.

A small example of values I wanted to put in that loop:

void PrefsDialog::defaultSection(const int idx) {
    QSettings settings;
    settings.beginWriteArray("visual");
    settings.setArrayIndex(idx);
    settings.setValue("override",false);
    settings.setValue("txtClr",idx==1?"#00F":"#000");
    settings.setValue("u",idx==1?true:false);
    settings.setValue("i",idx==2?true:false);
    settings.setValue("b",(idx>2&&idx<6)?true:false);
    settings.setValue("txtBg","#fff");
    settings.setValue("ident",idx==2?15:0);
    settings.endArray();
}