<![CDATA[A QCheckBox used by other functions]]>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;
]]>https://forum.qt.io/topic/139127/a-qcheckbox-used-by-other-functionsRSS for NodeThu, 05 Nov 2026 15:48:13 GMTTue, 06 Sep 2022 13:57:19 GMT60<![CDATA[Reply to A QCheckBox used by other functions on Tue, 06 Sep 2022 20:13:11 GMT]]>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);
]]>https://forum.qt.io/post/727674https://forum.qt.io/post/727674Tue, 06 Sep 2022 20:13:11 GMT<![CDATA[Reply to A QCheckBox used by other functions on Tue, 06 Sep 2022 19:30:39 GMT]]>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.

]]>https://forum.qt.io/post/727669https://forum.qt.io/post/727669Tue, 06 Sep 2022 19:30:39 GMT<![CDATA[Reply to A QCheckBox used by other functions on Tue, 06 Sep 2022 19:19:23 GMT]]>The checkbox must be deleted when button was printed and ChekBox is "Checked"

]]>https://forum.qt.io/post/727667https://forum.qt.io/post/727667Tue, 06 Sep 2022 19:19:23 GMT<![CDATA[Reply to A QCheckBox used by other functions on Tue, 06 Sep 2022 19:05:52 GMT]]>@Maksims
Delete the checkBox as soon it was clicked,
is really what you want to do ?

]]>https://forum.qt.io/post/727662https://forum.qt.io/post/727662Tue, 06 Sep 2022 19:05:52 GMT<![CDATA[Reply to A QCheckBox used by other functions on Tue, 06 Sep 2022 18:54:49 GMT]]>I use QFormLayout

]]>https://forum.qt.io/post/727660https://forum.qt.io/post/727660Tue, 06 Sep 2022 18:54:49 GMT<![CDATA[Reply to A QCheckBox used by other functions on Tue, 06 Sep 2022 18:18:15 GMT]]>Yes with a loop.

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

]]>https://forum.qt.io/post/727657https://forum.qt.io/post/727657Tue, 06 Sep 2022 18:18:15 GMT<![CDATA[Reply to A QCheckBox used by other functions on Tue, 06 Sep 2022 17:56:56 GMT]]>Do they mean for loop? I don't understand exactly how can I get to the added QCheckBoxes

]]>https://forum.qt.io/post/727653https://forum.qt.io/post/727653Tue, 06 Sep 2022 17:56:56 GMT<![CDATA[Reply to A QCheckBox used by other functions on Tue, 06 Sep 2022 16:51:36 GMT]]>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.

]]>https://forum.qt.io/post/727644https://forum.qt.io/post/727644Tue, 06 Sep 2022 16:51:36 GMT