[Interest] Send Video output to specified display

[Vinoth Kumar]

Thanks Rutledge. My device is an embedded device whose primary display is
LCD. It also has a HDMI port, through which a HDMI monitor is connected.

If my understanding is correct, by setting the screen in c++ (for
QQuickview), my application will be visible on the HDMI screen. But, I
actually want my application to be displayed on one screen(LCD) and only
the video output should go to the second screen (HDMI).


On Wed, Jun 25, 2014 at 12:08 PM, Rutledge Shawn <Shawn.Rutledge at digia.com>
wrote:

>
> On 25 Jun 2014, at 07:26, Vinoth Kumar <vinoth.k.kumar at gmail.com> wrote:
>
> > Hi,
> >
> > I have 2 different displays (1 LCD and 1 HDMI) connected to my device.
> Is it possible in Qt to direct the output of my video playback to a
> particular display. Does QtMultimedia have any provision for this?
>
> There are a couple of examples which iterate the QScreen objects and put
> windows on each of them:
>
> qtbase/examples/opengl/hellowindow is a low-level one, not using either
> widgets or Qt Quick
>
> qtbase/tests/manual/qscreen puts up widget-based windows on each screen,
> showing information about the screen.  You should probably test it to see
> what happens on your system.
>
> If you are writing your app with Qt Quick, we don’t have declarative API
> for putting windows onto particular screens yet, so you will need to do
> this in C++, for example in main() where you create the QQuickView or
> QQmlApplicationEngine.  QQuickView inherits QWindow, so you should be able
> to set the screen and also set the geometry of the window to that screen’s
> geometry() before showing the window, like the hellowindow example does.
>  The reason is that in a typical multi-monitor desktop environment, the
> user controls the arrangement of the monitors into a virtual desktop, so
> it’s not enough to define which screen you want the window to be associated
> with.  The window could “belong” to one screen but actually be overlapping
> onto several screens at the same time.  And on a desktop application you
> don’t usually need to control which screen the window goes to anyway; you
> let the user drag it there.  So controlling which screen it goes to is
> possible but usually needs both steps: setting the screen and setting the
> geometry.
>
> What kind of device are you developing for?
>
>
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