A QCheckBox used by other functions

[Maksims]

I make a To Do list, so far I have 2 function, the 1 function adds a QCheckBox at click and the 2 function must delete the QCheckBox which are "Checked" but I don't know how to do that.

menuwindow.cpp:

this funktion must delete the QCheckBox

void MenuWindow::on_alle_loschen_2_clicked()
{

    if(aufgabe->isChecked()){
        aufgabe->hide();
    }
}

this funktion add the new QCheckBox

void MenuWindow::on_einfugen_clicked()
{
    QCheckBox *aufgabe = new QCheckBox(ui->aufgabe_einfugen->text());
    ui->aufgaben_liste->addWidget(aufgabe);

     }

menuwindow.h

private slots:

    void on_alle_loschen_2_clicked();

    void on_einfugen_clicked();

private:
    QCheckBox *aufgabe;
    Ui::MenuWindow *ui;

[SGaist]

Hi and welcome to devnet,

If you want to remove all the check boxes that are checked you need to iterate through all the ones that you added to aufgaben_liste.

What you have here is a dangling pointer that will make your application crash when calling any function on it.

[Maksims]

Do they mean for loop? I don't understand exactly how can I get to the added QCheckBoxes

[SGaist]

Yes with a loop.

To which type of widget are you adding these check boxes ?

[Maksims]

I use QFormLayout

[mpergand]

@Maksims
Delete the checkBox as soon it was clicked,
is really what you want to do ?

[Maksims]

The checkbox must be deleted when button was printed and ChekBox is "Checked"

[SGaist]

Why a QFormLayout if there's label added with the checkbox ?

Use itemAt and from there the widget to check its state. You can then remove and delete it.

[mpergand]

Code that delete all checked checkbox from a formlayout at ui->formLayout:

QList<QCheckBox*> boxes;
for(int i=0; i<ui->formLayout->rowCount(); i++)
    {
    QCheckBox* box=qobject_cast<QCheckBox*>(ui->formLayout->itemAt(i,QFormLayout::FieldRole)->widget());
    if(box && box->isChecked())
        boxes<<box;
    }

for(QWidget* w : boxes)
    ui->formLayout->removeRow(w);