[Qt-interest] Changing font size in QTableWidgetItem

[Malyushytsky, Alex]

>>tbl_main->item( row, col )->font().setPointSize( font_size );

Above code would not work cause you change a copy of the QFont object
Look at font () declaration: "QFont font () const;". You does not change the font used by item.

You should use setFont( ); as you did.

If you are going to make a lot of changes, try to disable widget update using QWidget::setUpdatesEnabled, this should improve performance:

setUpdatesEnabled(false);
bigVisualChanges();
setUpdatesEnabled(true);

Best regards,
   Alex

-----Original Message-----
From: qt-interest-bounces at trolltech.com [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Paul England
Sent: Monday, January 19, 2009 3:21 PM
To: qt-interest at trolltech.com
Subject: [Qt-interest] Changing font size in QTableWidgetItem

Hi

Trying to change the font size of a QTableWidget (well, the
QTableWidgetItems in the QTableWidget).
Something like this works, but is painfully slow:

QFont f( "Tahoma", 10, QFont::Bold );
my_table->item( row, col )->setFont( f );

For a table of 18 rows and about 40-50 columns,  it takes a few seconds
to update.
I tried this:
tbl_main->item( row, col )->font().setPointSize( font_size );

Doesn't really work, unfortunately.  Do I have to repaint it or something?

Thanks
Paul
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