Cascades Development

[mfa01]

Hello

I use qt and quick to develop applications for bb10,I have encountered
a problem,

how to lock landscape mode in qt/quick project.

I have changed the descriptor file to landscape mode and screen
orientation in main.cpp to lock landscape mode, but still can't
landscape the application

some times when i succeed to run at landscape mode the application
crashes when go back to portrait at running time.

and this shown on the console

///////////////

Qml debugging is enabled. Only use this in a safe environment!

Unsupported query type: 100

Unsupported query type: 0

QDeclarativeDebugServer: Waiting for connection on port 3768...

QBBWindow: invalid buffer count. Expected = 2, got = 1

//////////////

what i can do for this problem?


Thanks

[Jaffa]

I've just got the same when taking a plain(ish) Qt app which used to work on BB10. Switching from portrait to landscape by rotating the device:

1. Redraws the landscape view in the bottom left corner
2. Crashes with a QtFatalMsg with text:

"QBBWindow: invalid buffer count. Expected = 2, got = 1"

This used to work, but isn't working any longer with the latest NDK (10.0.9, build ID = v201212072306) and Dev Alpha A image (10.0.9.1675)

[Jaffa]

If I start the app in landscape, it's the switch to portrait which kills it.

[yalnte]

I get a similar problem with a Qt/C++ app when running my app installed on the Dev Alpha. My bar-descriptor.xml file has the following:

    <initialWindow>
        <aspectRatio>landscape</aspectRatio>
        <autoOrients>false</autoOrients>
        <systemChrome>none</systemChrome>
        <transparent>false</transparent>
    </initialWindow>

[mfa01]

Guys i think its BB10 plugin Bug!!!

i solved it by lock orientation on portrait and rotate qml views 90 degrees

[Jaffa]

yalnte, even with autoOrients: false?

My bar-descriptor.xml contains:

    <initialWindow>
        <autoOrients>true</autoOrients>
        <systemChrome>none</systemChrome>
        <transparent>false</transparent>
    </initialWindow>

[yalnte]

Yes

It runs fine when executed via the IDE or when holding the Dev Alpha in landscape.

If I open my app when holding it in portrait it regularly re-orientates and resizes the display to match portrait mode. My app is unusable in this mode so I close it down, but I think it crashes if left like this.

Edit: I'm using Dev Alpha v 10.0.9.1675 and BB10 native SDK 10.0.9.1673

[Jaffa]

I can't find an appropriate JIRA issue, anyone got 5 minutes to raise one?

https://www.blackberry.com/jira/browse/BBTEN

My own dev environment has stopped talking to the Dev Alpha, so I can't provide much in the way of different usages at the moment.

[yalnte]

Have opened an issue here - hope this describes it sufficiently:

https://www.blackberry.com/jira/browse/BBTEN-610

[Jaffa]

Cool, thanks! Unfortunately, RIM are really trying my patience with stunts like:

---

You cannot view this issue because you are not the issue reporter or assignee, a member of the project group, or a member of the issue group and this issue is closed or in triage.

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So, until it's triaged by someone suitably privileged, we can't see it. Have you included a link to this thread?