Cant get Qtextedit from new tabs.

[MavenC]

I am having problems getting child objects when I add a new tab. When getting QTextEdit from the ones made in designer it works correctly. What I am trying to do is create a new tab and access the QTextEdit . The problem I see is when creating the QTextEdit in code then adding it in a new tab, it isn't being created. Instead I see QWidget with a scroll area being added. In the program, the widgets look correct but there isn't a QTextEdit widget that can be accessed.

void App::on_actionNew_triggered()
{
    QTextEdit* pTextEdit = new QTextEdit;
    QString tabTitle = "Untitled" + QString::number(ui->tabWidget->count() + 1);
    ui->tabWidget->addTab(pTextEdit, tabTitle);
    ui->tabWidget->setCurrentIndex(ui->tabWidget->count() - 1);
    pTextEdit->setObjectName("textEdit_" + QString::number(ui->tabWidget->count() + 1));
    pTextEdit->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
    pTextEdit->setFontPointSize(11);
    pTextEdit->setFocus();

    QList<QWidget*> te = ui->tabWidget->widget(ui->tabWidget->currentIndex())->findChildren<QWidget*>();
    qDebug() << "New : " << ui->tabWidget->widget(ui->tabWidget->currentIndex())->children();
    qDebug() << "From Designer: " << ui->tabWidget->widget(0)->children();

}

the debug

New :  (QWidget(0x155607a8, name = "qt_scrollarea_viewport"), QWidget(0x18cd8d30, name = "qt_scrollarea_hcontainer"), QWidgetTextControl(0x1552cb40), QWidget(0x18cd8ee0, name = "qt_scrollarea_vcontainer"))
From Designer:  (QVBoxLayout(0x154dd8f0, name = "verticalLayout_3"), QTextEdit(0x154dc8b0, name = "textEdit_Document"))
(QWidget(0x155607a8, name="qt_scrollarea_viewport"), QWidget(0x18cd8d30, name="qt_scrollarea_hcontainer"), QScrollBar(0x155606e8), QWidget(0x18cd8ee0, name="qt_scrollarea_vcontainer"), QScrollBar(0x155608e8))

[SGaist]

Hi and welcome to devnet,

If you want to get the only QTextEdit then search for them directly rather than for QWidget.

[mrjj]

hi and welcome
I made a default project and used your code with a button
and it adds a new tab with a working text edit ?

if i list the textedits, i see the new ones

 QList<QTextEdit*> te = ui->tabWidget->findChildren<QTextEdit*>();
  foreach (auto t, te) {
    qDebug() << t->objectName();
  }

[MavenC]

@SGaist Sorry, didn't see that i left that Qwidget.

EDIT: I think I may found the problem. When creating a new QTextEdit, it isn't parenting to the new tab but the tabwidget.

[MavenC]

So, when creating a new tab with tabwidget.addTab(new QTextEdit, "Name") it parents it to a QstackedWidget. In designeer they are parented to a QWidget Tab.
So what I need to figure out is how to access the QTextEdits that is in a tab. Each tab has a single QTextEdit widget in it. (Something like how tabs are in word.) I have combo boxes and actions that will need to change the selected text. Below is example code:

void App::on_actionNew_triggered()
{
    QTextEdit* pTextEdit = new QTextEdit;
    QString tabTitle = "Untitled" + QString::number(ui->tabWidget->count() + 1);
    ui->tabWidget->addTab(pTextEdit, tabTitle);
    ui->tabWidget->setCurrentIndex(ui->tabWidget->count() - 1);
    pTextEdit->setObjectName("textEdit_" + QString::number(ui->tabWidget->count() + 1));
}

void App::on_comboBox_FontFamily_currentTextChanged(const QString &arg1)
{
    if (fontDataBase.hasFamily(ui->comboBox_FontFamily->currentText()))
    {
        // Get current tab and find textEdit child.
        QTextEdit* curTextEdit = NULL;
        QWidget* pWidget = ui->tabWidget->widget(ui->tabWidget->currentIndex());

        QList<QTextEdit*> allTextEdits = pWidget->findChildren<QTextEdit*>();
        if (allTextEdits.count() < 1)
        {
            return;
        }

        curTextEdit = allTextEdits[0];

        // Set selected text to Fontfamily.
        QTextCursor cursor = curTextEdit->textCursor();
        QTextCharFormat format = cursor.charFormat();
        format.setFontFamily(ui->comboBox_FontFamily->currentText());
        cursor.setCharFormat(format);
    }
}

This will work for tabs created in designer but not for tabs created by code.

[SGaist]

Since your QTextEdit is the widget that you put in the tab why not just use:

QTextEdit *textEdit = qobject_cast<QTextEdit *>(ui->tabWidget->currentWidget());

?

[MavenC]

Thinks for helping. The problem with this, is that it gets the new tabs but not the one created in designer. I guess a work around would just create all tabs through code only. What I manage to do is store the widgets in a struct Qlist for each appropriate tab. Your solution would be more optimal than what I came up with.