**How to make qtablewidget Read only?**

[vasu_gupta]

I have introduces a table in my ui file ,now what I want is that during run time the table values can only change due to internal algorithm but user is unable to make any change or select any cell externally.

How can I do that?

i want that table should only update data/text via internal algorithm ,but once the text is updated that cell become accessible to external input

QTableWidgetItem *itm = new QTableWidgetItem();

itm->setFlags(itm->flags()^(Qt::ItemIsSelectable|Qt::ItemIsEditable));
ui->tableWidget->setItem(i,j,itm);

at this point user cant enter value externally,but once i do this:

QTableWidgetItem *itm = new QTableWidgetItem();
itm->setText("0.554");
ui->tableWidget->setItem(2,3,itm);

cell(2,3) becomes accessible to external input,how to avoid this thing??

after browsing many people suggest to use noedittrigger but i am unable to understand how to use it and what it does

[mrjj]

@vasu_gupta said in **How to make qtablewidget Read only?**:

noedittrigger

Hi
It is
pTableWidget->setEditTriggers(QAbstractItemView::NoEditTriggers);

Normally you can press enter or F2? or double click to start editing a cell. this will disable that.

[vasu_gupta]

@mrjj so after this will i be able to change table data by algorithm without making it editable again

[mrjj]

@vasu_gupta
It disables the users normal ways of start editing.

It has nothing to do with the items as such.

• ..,but once i do this:

You must set the flag AGAIN when you create new item.
That is why it becomes editable again. Its no longer the old item and
hence its editable again/as normally.

But why do you new it again ?
You can just call setText on the existing.

[frnklu20]

But how can i disable editing in only the items that i want?

[SGaist]

Hi,

Use QTableWidget::setFlags for the items you want to have different capabilities.

[frnklu20]

Hi,

Vnom->setFlags(Qt::ItemIsEditable);

like this?but i want it to not to be editable.

[mrjj]

Hi
Well more like
Vnom->setFlags( Vnom->flags() & ~Qt::ItemIsEditable);
To mask out the Edit Flag and keep rest.

[sayan275]

@mrjj but setting it back to AllEditTriggers, is not allowing to edit tableview anymore.
Am I missing anything?

[mrjj]

@sayan275

Hi
The trigger settings tell what keys can start editing. like from having to press a key to start editing to allTriggers ,
where you simply can start typing.

The flags, however, is per item and they are normally Selectable and editable.
So if you remove say editable, its not possible to edit it, regardless of what can trigger an edit.