[Qt-interest] MDI Question

[John McClurkin]

JD Guzman wrote:
> Hello all,
> 
> I have a quick question.  I'm making a MDI app and am having a small 
> issue with Sub Windows.  From the main app window menu bar I create a 
> sub window using the following code.
> 
> void MainWindow::showPreferences()
> {
> Preferences *prefs = new Preferences;
> ui->mdiArea->addSubWindow(prefs);
> prefs->show();
> }
> 
> 
> This works fine and the windows shows inside the mdi area.  The prefs 
> window has a button box and the accepted and rejected signals are 
> connected like this:
> 
> 
> void Preferences::connectActions()
> {
> QObject::connect(m_ui->buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
> QObject::connect(m_ui->buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
> }
> 
> void Preferences::accept()
> {
> this->close();
> }
> 
> void Preferences::reject()
> {
> this->close();
> }
> 
> 
> The problem is that when either the slot is called the window remains 
> but the contents (which at the moment is only the button box) 
> disappear.  I then have to press the "X" manually to fully close the 
> window.  Furthermore if I remove the ui->mdiArea->addSubWindow(prefs) 
> call everything works as expected, with the difference that the prefs 
> window is no longer in the mdi area.
> 
> 
> Any ideas?
> 
> 
> Regards

This is how I close a view that may be in QMdiSubWindow:

> void DataView::closeView(bool checked)
> {
> 	QWidget *parent = parentWidget();
> 	if(parent != (QWidget *)NULL) {
> 		parent->close();
> 	}
> 	else {
> 		close();
> 	}
> }