[Interest] Fwd: External Application window title is missing in QWindow

Sujan Dasmahapatra yellowlemontree0821 at gmail.com
Sat Feb 29 10:55:47 CET 2020

Dear Tony

You're right, I am trying to access two separate apps, to be launched in a
single QTabwidget. but how does it matter, since even if I launch in single
Widget, it is still not coming. The header title is being correctly used I
am able to launch the app. But the app's header and menu bar, are not being

    if (process_->waitForStarted(-1))


        //0.00289917 0.28096 -0.180618 = 343

        HWND id = FindWindow(0, L"App.exe");

        if (!id)


        QTimer t;


        QWindow* window = QWindow::fromWinId((WId)id);

        QWidget* widget = QWidget::createWindowContainer(window);



I am trying it on QMainWindow. And I think FindWindow itself is giving
header text and menu less portion. So window and widget none

is getting it. Can you suggest me what can be done for this.



On Sat, 29 Feb 2020 at 07:53, Tony Rietwyk <tony at rightsoft.com.au> wrote:

> Hi Sujan,
> It's not clear to me why you want to use fromWinId?  Do you want two
> applications in separate processes to share the same windows?  The title
> bar and menu are drawn by special win32 non-client events - but they may be
> suppressed, since the window is now being hosted in your app.  With more
> information, maybe someone can help you - don't just repeat the same
> details in another post!
> Regards, Tony
> On 28/02/2020 11:13 pm, Sujan Dasmahapatra wrote:
> Dear Friends,
> My External Application Window title, is missing in my QWindow.  I am
> trying to set this window on a Widget and finally I am displaying this
> widget on QScrollBar. But I am missing the Window title and menu bar from
> the app. Please check the code snippet below.
> QWindow* window = QWindow::fromWinId(id);
> QWidget* widget = QWidget::createWindowContainer(window);
> _gui->scrollArea->setWidget(widget);
> With this snippet, I can see the app is launched, but it's Title header
> text, is not opening.
> Please advise me what is going wrong. I have to see the window title and
> most importantly the menu bar as well.
> regards
> sujan
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