Non-modal Qt::Popup

[cidadao]

Hello,

I want to have a QWidget with Qt::Popup window flag. But it needs to be non-modal. Even if I set modality to Qt::NonModal, after setting the windows flags, the popup always blocks interaction with the parent.

Is this a bug? A feature? What's a workaround for this?

I'm on Windows.

[Vinod Kuntoji]

@cidadao ,

Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
m_Button = new QPushButton(this);
sample = new QWidget;
sample->setAttribute( Qt::WA_QuitOnClose, false );
if(sample->isMinimized()) {
sample->showNormal();
}
connect(m_Button,SIGNAL(clicked()),this,SLOT(on_pushButton_Clicked()));
}
void Widget::on_pushButton_clicked()
{
sample->setFixedSize(50,50);
sample->setWindowFlags(Qt::FramelessWindowHint);
sample->setWindowModality(Qt::NonModal);
sample->show();
}

[cidadao]

@Vinod-Kuntoji it really has to be a Popup, not a FramelessWindow. A Popup doesn't take space in a layout, it is drawn on top other widgets instead.

If you try your code with Qt::Popup you might have the same problem as OP (can't set a Popup to be non-modal)

[Pablo J. Rogina]

@cidadao it looks like you want a green ball that is red...

From Qt documentation about Qt::Popup window type enum:
"Indicates that the widget is a pop-up top-level window, i.e. that it is modal, but has a window system frame appropriate for pop-up menus."

so modal it'll be...

[cidadao]

@Pablo-J-Rogina got it! Modal forever :)
Still wondering if this OS-specific or just a design choice on Qt's implemantation though.

[cidadao]

Finally, the exact answer I was looking for:

Qt::FramelessWindowHint | Qt::Tool

Instead of using Qt::Popup.