It will never show at the second time and close the window will crush

[lyon9601-cloud]

I create a QDialog and embedded the vsgQt::Window into it.

VSGDialog::VSGDialog{
...
m_window = new vsgQt::Window(m_viewer, windowTraits, (QWindow*)nullptr);
auto widget = QWidget::createWindowContainer(m_window);
QVBoxLayout* layout = new QVBoxLayout;
layout->addWidget(widget);
this->setLayout(layout);
}

then I press a button,it will process dlg.exec().

First time I press the button, it all good.

Second time ,the vsg window become invisible.

When I press the default close button on top right,the application will crush.

Please help!Thanks!

[lyon9601-cloud]

I have just started working with VSG, so many things are not very clear. If more details are needed, I can provide detailed code.

[lyon9601-cloud]

I already know the reason why the window invisible.
When I press the close button,the vsgQt window will destroy itself.

That is the reason why the window invisible when I second time call dlg->exec(). The second time I close the dialog, 'windowAdapter' already destoryed,but the vsgQt::Window not, and I jush push back an vsgCloseWindowEvent into null pointer. That make my code crush.