QWidegt->show() pops out a new window (windows only)

Hi,
I discovered a rather strange behavior in my application under Windows. I'm developing an application under Linux and use it on Windows machines also.

I have a GroupBox holding a widget, and hide and show the widget depending on the toggled Slot of the groupBox.
In Linux this works really fine.

In Windows however the widget doesn't show when I start the application. When I click on the checkBox a second time. A new Window containing my widget pops out. I have really no idea how this can happen.
Anyone any advice?

Although I have some experience I'm not sure if this isn't a very noobish mistake and therefore post it in the newbs group.

thx for the help

Code looks something like this:

Code:

---

void myWidget::gbToggled(bool on){
    if(on)
        otherWidger->show();
    else
        oderWidget->hide();
}

---

Attachment 7959Attachment 7960Attachment 7961

is this widget parented?

No it was not! Thx, now it doesn't pop out anymore.
It just refuses to show itself at all now. Just a little line under box text if the box is checked.

Well, you have to make sure its not sharing the same space with other widget!
Use a layout.

I do.
But maybe I'm doing t wrong.

Code:

---

QGridLayout *layout = new QGridLayout();
  gbTimePeriod = new QGroupBox(tr("Zeitraumbezogen"));
  gbTimePeriod->setCheckable(true);
  connect(gbTimePeriod, SIGNAL(toggled(bool)), this, SLOT(gbToggled(bool)));
  layout->addWidget(gbTimePeriod, 0, 0);
  QGridLayout *lPeriod = new QGridLayout();
  cabw = new ContinuousActionBaseWidget(videoPlayer, this);
  lPeriod->addWidget(cabw, 1, 0);
  gbTimePeriod->setLayout(lPeriod);

---

you embed your widget inside 'layout', but didn't set 'layout' to any widget.

True, its not in this part.
the setLayout is at the end of the Constructor. Other widgets are added to the layout as well.

But nevermind I already found the bug, it was just me being extremely stupid. I still had the addWidget in comments on my Windows Machine and posted code from my VBox where i actually work.
I didn't consider that because I was so flubber gusted by the widget popping out.
Anyhow thank you very much for your help and patience, have an awesome day.