[Solved] Adding text to cells of a QTableWidget by code?

CAD_coding

Hi,
I added a QTableWidget in my form class. I did not modify anything in form, just added the widget with all default properties.
Then in a function I called setColumnCount() & setRowCount() so that I got the required no of cells.
I can add text to the cells at run time by double clicking.
But I cannot find a function to add text to a particular cell in a QTableWidget by code.

How do I add the contents of a QString to a cell by code something like this: table->setCellText(QString text, int row, int column)?

messi

Hi CAD_coding,

you can add any kind of widgets to your cells with the following:
yourTableWidget->setCellWidget(cellWidget, row, col);

e.g. Create a QLabel and pass it to setCellWidget().

You can also use QTableWidgetItem
there you can use the function setText().
with yourtableWidget->setItem(row, col, yourItem) you can add it to the QTableWidget.

SGaist

Hi,

Update the "item":http://qt-project.org/doc/qt-4.8/qtablewidget.html#item of the cell

messi

@SGaist

Is the QTableWidget automatically filled with QTableWidgetItem?
If this is true, yes the he can modify it with your suggeston .
Otherwise he first has to create an item.

messi

@ SGaist
Items are created ouside the table (with no parent widget) and inserted into the table with setItem():

Sorry my mistake. Have only read the the half question.
You were totally right.

SGaist

So it's working like you wanted ?

If that's the case don't forget to update the thread's title to solved so other forum users may know that a solution has been found.

CAD_coding

I am a bit confused here!
Do I have to create a QTableWidgetItem then add text to it & then setItem?
or directly call setText on QTableWidgetItem with correspondin row & column?

SGaist

If you don't have an item already, create a new one with the text you want and set it.
If the item already exists update it's text.

CAD_coding

Hi SGaist,
I had to create a QTableWidgetItem in heap memory & set it as an item in my table widget.
Now I have some questions:

Is the item automatically deleted when the table is deleted?
According to "this":http://qt-project.org/doc/qt-4.8/qtablewidget.html#setItem :

bq. The table takes ownership of the item.

So I think it should be deleting the items while deleting the table. Correct?

I am having some problem in setting the alignment of text.
According to "this":http://qt-project.org/doc/qt-4.8/qtablewidgetitem.html#setTextAlignment it takes only 1 int arg. Now I want HCENTRE & VCENTRE Alignment both. I tried by passing (Qt::AlignHCentre && Qt::AlignVCentre). It doesnt work.

SGaist

Correct
Sure it doesn't work, your are doing a logical AND, that's not the way to set flags you should either use Qt::AlignCenter or Qt::AlignHCenter | Qt::AlignVCenter, have a look at the "Alignment enum":http://qt-project.org/doc/qt-4.8/qt.html#AlignmentFlag-enum

CAD_coding

ohh got it!
Thanks