I did this:

ui->comboBox->clear(); ((QSqlTableModel*)ui->comboBox->model())->select();

And it's working!

@koahnig

Not directly. You have to fake it:

bool eventFilter(QObject* watched, QEvent* event) { if( watched == comboBox ) // or watched->inherits("QComboBox") ?? { // you may want to do additional checks here for a generic solution (like the combobox is really editable, it has a insert policy set, etc) switch( event->type() ) { case QEvent::FocusOut: { QKeyEvent keyEvent( QEvent::KeyPress, Qt::Key_Enter, Qt::NoModifier ); QCoreApplication::instance()->sendEvent( watched, &keyEvent ); } break; } } return BaseClass::eventFilter(watched,event); }

Hi @SolaVitae , as suggested by @jsulm you have to delete param name in connect signal,

you can keep const &

Your connect will be then:

connect(charactersBox, SIGNAL(currentIndexChanged(const QString &)), this, SLOT(characterSelectedChange(const QString &)));

Right, that's the best solution if you are using a QTabWidget.

I had create a model with key and value and pass it to qml, it worked!!!
Sorry for late reply.
Thank you @raven-worx

@tamlong0205 I think most of this can be done from C++ side.

You can add a function in the model which can return what type is the data for current index. This function will be called from QML and depending upon its value use a Loader to load the specific delegate.

Perhaps setting currentIndex in Component.onCompleted handler ?

Create a C++ function which will store in info in the model itself i.e When you change the index in ComboBox call this function and update the value there and may be maintain a role to store this update.

I apologise for the delay in response. The question was to make sure that the combobox always pops up in a given direction or position.

Ok, thanks a lot! Marked as solved!

QComboBox {background-color:rgb(190,190,190);color:black;padding-left: 10px;padding-right: 30px;border-style: solid;border-width: 0px;}

"padding-left: 10px;"

the padding will shift the combo-box displayed content form the left edge

QComboBox::drop-down {subcontrol-origin: padding; subcontrol-position: top right;width: 40px;border: 0px ;}

"subcontrol-position: top right;"

and the above will position wot text to the right.

Hopefully this helps.

@VRonin

With the provided code the whole dropdown list will be invisible. Do you know how to keep the items unaffected?

@mrjj said:

this->ui->personComboBox

then pointer must be corrupt?

@raven-worx
Thanks a lot !

This does exactly what I want !

@SGaist Thanks. That's definitely another option. I suppose these approaches are as good as it gets for having a toolbar item auto-adjust to horizontal vs. vertical. Thanks again.

@Rondog

I was already thinking of setting the maximum width for each combobox but when creating the comboboxes I dont know the width of the scrollareas viewport.

@SGaist
Will try that, seems to be the more nice solution :)

Thanks

Solution that works for me is to call unpolish and polish on combo box:

auto cb = new QComboBox(this); cb->setItemDelegate( new QStyledItemDelegate); style()->unpolish(cb); style()->polish(cb);

@_compiler said:

thanks.

@elveatles
Thank you. You were right.

Hi,

Isn't QComboBox::activated what you are looking for ?

It shouldn't belong to the Purchase table. That table should only contain items whether they come from a store or somewhere else is not something that that table should handle.

Thank you to the_ and SGaist!

I realised it like the_ explained. In my case it is the easiest way and it works (in a combobox with a list of values from a related table, I want to know if the entered string is part of the list and if not (index = -1) I open a dialog to add a new value in the related table).
But I admit, QCompleter is also a smart solution. Maybe in the future...

I solve it I use the same thing

ui->comboBox->view()->setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);

if there is a better solution please post it
Thanks

@wavelike said:

don't they use QComboBox-like widgets to offer different colors, brush thickness etc?

Hm, I guess that's true, but I'd say it has more to do with QMenus and QToolButtons than QComboBox. But then again they are indeed similar in some ways. Oh well, the important thing is it's doable and quite easy ;)

Yes, it's clearer.

In that case I'd create a subclass of QComboBox with a property that would return content of data.

Thank you it worked.

@SGaist

I have found out that I can use setEditText(const QString &) to specify the default display text, like "-- Choose --". But, this works only with editable QComboBox widgets, which I wouldn't want to do. Besides, why is my non-editable QComboBox displaying a seemingly arbitrary string that has nothing to do with the provided index? Again, it is only the display text I am talking about, while the selectable items - the contents of the ComboBox - are perfectly fine.
How does this work to begin with? I have read the documentation on QComboBox numerous times and found nothing.

I have solved my problem in this way:

First I have changed the modelColumn to the Column with the key-value in the second combobox:

ui->cbCostCenterGr->setModelColumn(0);

Then I fetch the key-value for the second combobox from the first combobox...

QModelIndex id = ui->cbCostCenter->model()->index(index, 2); QString _CcGr = id.data().toString();

...and search the value in the second combobox:

ui->cbCostCenterGr->setCurrentIndex(ui->cbCostCenterGr->findText(_CcGr));

At least I change the modelColumn of the second combobox to the column with the text (to display the text and not the key-value):

ui->cbCostCenterGr->setModelColumn(1);

Here is the hole function:

void VoucherPosForm::on_cbCostCenter_activated(int index) { ui->cbCostCenterGr->setModelColumn(0); QModelIndex id = ui->cbCostCenter->model()->index(index, 2);//"2" is the key-column QString _CcGr = id.data().toString(); ui->cbCostCenterGr->setCurrentIndex(ui->cbCostCenterGr->findText(_CcGr)); ui->cbCostCenterGr->setModelColumn(1); }

It works fine, but is there a straighter way??

Yeah, according to QComboBox code should work:

QVariant QComboBox::itemData(int index, int role) const { Q_D(const QComboBox); QModelIndex mi = d->model->index(index, d->modelColumn, d->root); return d->model->data(mi, role); }

Will implement this.

HI and welcome to devnet,

I think you should try to write your own QStyle

Hi,

Something like show in the relational table model example ?

Thanks a lot mrjj!!!! This really worked for me!!!

Try

model->data(model->index(index,1));

Hi,

You are missing a return False in your filterEvent function see the C++ documentation for more details

super, dont forget to flag it as solved :)
and happy coding.

That's what setEditorData should do

@Sam
Thanks you :)
Why can't i set using? can't we do it for tableview? is it only for widgets?

tableView->setIndexWidget(index,comboDelegate);

'QAbstractItemView::setIndexWidget' : cannot convert parameter 2 from 'ComboBoxDelegate *' to 'QWidget *' Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

This works fine

tableView->setIndexWidget(index,new QLineEdit);

@p3c0
Sure :)

I can map like this:

mMapVoucherPos->addMapping(ui->cbCostCenter->lineEdit,8);

and the combobox in the dialog shows the right value, but I cannot submit to the model!

@Joel-Bodenmann

Not sure what you mean with own model.
When you want that the user is able to add to the combobox only text which follows your specific rules, you may use a QValidator.
Just saw the setModel of QCombobox most likely you need to use one of QCombobox signals (e.g. editTextChanged) and add it to the model through your own slot method. However, never used that yet.