[Qt-interest] How to properly destroy QWebViews?
Peter
pgeorges at gmail.com
Wed Oct 28 17:08:44 CET 2009
Lets imagine we have a QTabWidget derived object with multiple QWebViews
derived widgets attached to it. When a tab is closed, would this not be
enough to completely destroy the QWebView widget and free up all the memory?
class TabWidget : public QTabWidget
class WebPanel : public QWebView
void TabWidget::closeTab(int index)
{
QWidget* widget = QTabWidget::widget(index);
removeTab(index);
widget->deleteLater(); //or delete widget
}
or even (if it makes any difference?):
void TabWidget::closeTab(int index)
{
WebPanel* webPanel = dynamic_cast<WebPanel*>(widget(index));
removeTab(index);
webPanel->deleteLater(); //or delete webPanel
}
What else must be done to completely free the memory used? If I goto a large
site, the memory usage shoots up but closing a tab does not clear it all.
Does QtWebKit keep some other objects laying around? Is it because I share a
single networkAccessManager between each QWebView?
Any assistance would be appreciated!
Cheers
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