MdiSubWindows

Hello!

I have a small problem with documentation understanding at this moment probably. In documentation we can find out, that mdisubwindow has a very good property IsActivated. And as I understand the active window is that window, which currently has a focus on itself. So, in this case how it's possible that two/three etc. sub-windows in MDIArea can be active simultaneously(when I try to close only the active one, all sub-windows shall be closed)? What the sub-window state depends on?

Thank you for your answers beforehand.

Only one subwindow can be active.
QMdiSubWindow * QMdiArea::activeSubWindow () const
returns the active one.

I think if you close it, another subwindow gets the active state.
See QMdiArea::WindowOrder.

Thank you for your answer. I'll try it.

p.s. I tried foreach loop for getting all sub-windows an dI used break key-word for braking the loop. So in this situation the non-active sub-window was closed firstly... I'm a bit confused.

You don't need a loop to close the active sub-window, so I have no idea what 'foreach' or 'break' have to do with this. Post the code or we will remain as confused as you.

Sorry, guys about that, my mistake. OK, here is the code:

Code:

---

foreach(QMdiSubWindow *sub, this->mdiWin->subWindowList())
    {
        if(sub->isActiveWindow())
        {
            sub->close();
            break;
        }
    }

---

So in this case the window, which was opened first, will be closed, even it's not an active window. In this code "this" - is window, which central widget is MdiArea's object (mdiWin). In each sub-window we have a simple widget, let's say, PushButton.

isActiveWindow() returns true for all the MDI sub-windows because their window(), which is the next ancestor widget that has (or could have) a window-system frame, is the same window and is active.

Try this:

Code:

---

QMdiSubWindow *sw = mdiWin->activeSubWindow();
if (sw)
  sw->close();

---

Thank you.
I didn't consider that at all. I thought, that each sub-window has its own flag. So it's mostly my misunderstanding.