<![CDATA[Two QmlApplicationViewers in an application]]>Hi everyone,

I want to lock screen orientation on Portrait for some qml pages and lock it on Landscape for another qml pages. I didn't find a way to do it in QML.

So here is my solution:

I create 2 QmlApplicationViewers in the main.cpp, one is locked on Portrait and the other is locked on Landscape:

@QmlApplicationViewer view1;
view1.setOrientation(QmlApplicationViewer::ScreenOrientationLockPortrait);
view1.showFullScreen();

QmlApplicationViewer view2;
view2.setOrientation(QmlApplicationViewer::ScreenOrientationLockLandscape);
view2.close();@

I also got some signals and slots to swith between those viewers. I thought this method should work. But a problem appears:

the application is just take the view2's orientation into account. the two views seem to use the same orientation setting.

My question is: how to solve this problem or anyone has other ideas to lock orientation for specific QML pages?

Thanks

]]>https://forum.qt.io/topic/5240/two-qmlapplicationviewers-in-an-applicationRSS for NodeMon, 20 Apr 2026 23:38:22 GMTWed, 20 Apr 2011 13:50:35 GMT60<![CDATA[Reply to Two QmlApplicationViewers in an application on Wed, 08 Aug 2012 14:17:59 GMT]]>rishygupta, you have asked this question in a number of threads, a couple of which are very old. Please open a separate thread for a new question and please don't duplicate your questions. Thanks.

]]>https://forum.qt.io/post/101106https://forum.qt.io/post/101106Wed, 08 Aug 2012 14:17:59 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Wed, 08 Aug 2012 10:14:54 GMT]]>is it possible QmlApplicationViewer can be used or manipulated in other class rather than main;

]]>https://forum.qt.io/post/101105https://forum.qt.io/post/101105Wed, 08 Aug 2012 10:14:54 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Thu, 21 Apr 2011 10:08:55 GMT]]>You can rotate video page according to sensors.

]]>https://forum.qt.io/post/84944https://forum.qt.io/post/84944Thu, 21 Apr 2011 10:08:55 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Thu, 21 Apr 2011 08:36:46 GMT]]>@minimoog77 ,but i can imagine, if i lock the application on portrait, all pages are locked on portait. Video page is included, i can use sensors to get orientation's changing signals to change qml elements' properties (width, height...etc), but i can't set orientation on Landscape. isn't it ?

]]>https://forum.qt.io/post/84938https://forum.qt.io/post/84938Thu, 21 Apr 2011 08:36:46 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Wed, 20 Apr 2011 20:28:41 GMT]]>Yes, that was the idea, if you want full control of orientation.

]]>https://forum.qt.io/post/84904https://forum.qt.io/post/84904Wed, 20 Apr 2011 20:28:41 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Wed, 20 Apr 2011 17:08:31 GMT]]>@minimoog77, i want to do it because, in my appli, there is a video player, i have to set it on Landscape, and for other QML pages, i want to locked it on portrait.

you mean for the QmlApplicationViewer, l locke the application on portrait, and use accelerometers or orientation sensor to set orientation for video page?

]]>https://forum.qt.io/post/84895https://forum.qt.io/post/84895Wed, 20 Apr 2011 17:08:31 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Wed, 20 Apr 2011 17:02:20 GMT]]>You will lock the orientation. Then you will use accelerometers to detect if it's orientation was changed, and you will manually orient the qml elements.

But, why do you want locking the orientation both ways?

]]>https://forum.qt.io/post/84893https://forum.qt.io/post/84893Wed, 20 Apr 2011 17:02:20 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Wed, 20 Apr 2011 16:42:32 GMT]]>@minimoog77, thanks for your suggestion, But i didn't find a way to lock screen orientation using accelerometers, could you please explain it more?

]]>https://forum.qt.io/post/84891https://forum.qt.io/post/84891Wed, 20 Apr 2011 16:42:32 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Wed, 20 Apr 2011 16:32:49 GMT]]>Why don't just read the accelerometers by yourself?

]]>https://forum.qt.io/post/84889https://forum.qt.io/post/84889Wed, 20 Apr 2011 16:32:49 GMT<![CDATA[Reply to Two QmlApplicationViewers in an application on Wed, 20 Apr 2011 14:48:48 GMT]]>is it possible to set screen orientation on the fly?

]]>https://forum.qt.io/post/84877https://forum.qt.io/post/84877Wed, 20 Apr 2011 14:48:48 GMT