QToolTip not showing when QLineEdit is focused

Kamba

Hey,

I have Subclassed QLineEdit and added focusInEvent and focusOutEvent like this

void QLineEditSubclass::focusInEvent(QFocusEvent *e)
{
    QLineEdit::focusInEvent(e);
    emit(focused(true));
}

void QLineEditSubclass::focusOutEvent(QFocusEvent *e)
{
    QLineEdit::focusOutEvent(e);
    emit(focused(false));
}

Focus slot is working, but QToolTip is not showing.

void Class::on_lineEdit_focused(bool focused)
{
    QPoint pos = mapToGlobal(ui->lineEdit->pos());
    qDebug() << pos;
    QToolTip::showText(pos, "Test text");
    qDebug() << QToolTip::text();
    qDebug() << QToolTip::isVisible();
}

QDebug is printing pos and text of the QToolTip. isVisible returns false and QToolBox itself is not showing.

SGaist

Hi,

Why not call setToolTip on your widget ?

Kamba

@SGaist
It shows tooltip only if mouse cursor is on the widget. I forgot to mention that tooltip should be shown even without cursor.

VRonin

try adding the widget to the tooltip call QToolTip::showText(pos, "Test text",this);

From the docs:

The rect is in the coordinates of the widget you specify with w. If the rect is not empty you must specify a widget. Otherwise this argument can be 0 but it is used to determine the appropriate screen on multi-head systems.

Kamba

@VRonin
Tried

QToolTip::showText(pos, "Test text", this);

and

QToolTip::showText(pos, "Test text", ui->lineEdit);

without any success.

SGaist

The QToolTip might not be the best tool then. Why do you need a permanent QToolTip ?

Kamba

@SGaist
I need to have tooltip when qlineedit is focused to inform user about acceptable datatype, value range and small description.
I think I could make a special widget for this, which acts like tooltip. It could change location, text and visibility based on focused widget.

Devopia53

@Kamba

Hi.

something like this:

QLineEditSubclass::QLineEditSubclass(QWidget *parent)
: QLineEdit(parent)
{
    setToolTip("Test text");
}

void QLineEditSubclass::focusInEvent(QFocusEvent *e)
{
    QLineEdit::focusInEvent(e);
    
    auto    gPos = (parentWidget()) ? parentWidget()->mapToGlobal(pos()) : pos();
    auto    toolTipEvent = new QHelpEvent(QEvent::ToolTip, pos(), gPos);
    QApplication::postEvent(this, toolTipEvent);
}

Not tested... :)

SGaist

@Kamba: Looks like a QWidget with a QLineEdit on top of a QLabel and you set your text on the QLabel. You can style it if you have special color needs.