[Qt-interest] Update method for QWidget

[prashant bhutani]

Hi Everyone,

I am building System Monitor in Qt.
When I am calling my method for periodical update of processes
via new/child thread, an internal QWidget::update() call is being generated,
which according to documentation occurs and calls paintEvent() and
 erases previous widget's area.
http://doc.qt.nokia.com/4.7/qwidget.html#update

I am using QTabWidget to show processes, file_system and system information
in different tabs. To show processes, I am using QTableWidget.
Now, during periodical update, I am updating the QTableWidget due to which
update() is called. This call is giving me a blank tab (which before thread
working
showing the process table). But as soon as I switch between tabs and come
back
to process tab again, the table(new one ;) is visible again.

Now, how can I update the table without switching in between the tabs as it
would
not be user-friendly if user has to switch again and again between tabs to
see the
update.

Thanks in advance.

Regards,
Prashant Bhutani
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