Qt on BlackBerry and QNX

I went back and re-read the notes on building Qt for Blackberry.

It does mention that it is targeting Blackberry 10 and not so much the playbook. It also recommends using 4.8.x

From what I have found version 4.8.3 is the latest Qt version that you can use if your target is a playbook (version 2.1). Every version higher has some really strange issues (maybe unsolvable at the application level).

I submited mine in 21, just checked it's still in draft statuts. Is there any way to see the approval on going process, like in Ovi ?

read this "link":http://developer.blackberry.com/native/documentation/bb10/com.qnx.doc.native_sdk.devguide/com.qnx.doc.native_sdk.devguide/topic/accessible_folders.html for more info regarding filesystem access permissions in BB10

it is also recommended to use absolute file paths, instead of relative paths

Just to add more information on this subject, I notice other widgets, like labels, are updated on the showevent(). Not sure if this behavior could be considered a bug, I always tought that showevent() was suposed to be used in this kind of situation of updating widgets. Anyway it's "fixed" with singleshot()

Could you explain a little further please Andre?

I got it working like you said.

@joao@joao-EasyNote-TM86:~/qtBlackBerryProjects/MathGraphicaOpenGL-build-Blackberry-Release$ ./../../bbndk/host_10_0_9_404/linux/x86/usr/bin/blackberry-nativepackager -package MathGraphica.bar bar-descriptor.xml@

Thank you very much.

Is there any player in example / demo in que Qt that you can try porting out of the box to bb10 to see if it plays sound ? I was having a OpenGL problem in BB10, I solve it by using the cube example and comparing with my code.

I ported redak libre text editor to qnx/bb10 cascades, I wanted to test it on playbook how can this be done ?

app is under review at bbw

Sweet!

Thank very much, I'll try this.

Hm, thats interesting.

Have to test that on a device as soon as I got one :)

Well, it works on Windows.

this is a known issue: https://bugreports.qt-project.org/browse/QTBUG-28890

Uninstall QtCreator, re-install. Delete all kits/qt versions and re-add again. Now works, Solved :)

I will not reject possibility that simulator has some problems getting correct DPI while showing text when its font size is given in points. How size of your rectangle is calculated? Is it calculated in pixels or points? If in points where from have you got points?

If you're using Symbian Qt Components, this could help you:
http://kodira.de/2012/12/qt-components-on-blackberry-10/

OK. I have successfully launched app from QtCreator. Previously I had used QtCreator with simulator and that ended with following error:

Info: Sending request: Launch
Info: Action: Launch
Info: Launching lt.sandbox.todoteriaplus.testDev_doteriaplus50989c0_...
Error: Failed to create application process: Exec format error
Launching application failed

This error indicated that I must change sysroot to armle-v7 and remove Qt mkspec I have used in this dialog (screenshot shamelessly taken from http://qt-project.org/wiki/Qt-Creator-with-BlackBerry-10 ):

!https://raw.github.com/blackberry/Qt/codedrop_20120109/screenshots/BB10KitConfiguration.png!

After that everything just went through.

My advice for you would be to run sample app http://qt-project.org/wiki/Qt-Creator-with-BlackBerry-10#9502a243840645c318c087ca6b94d95d . It is quite simple and should you give basic idea how to run simple Qml app.

If you still have questions - ask. I will be happy to help.

OK. Your code looks good. What does not work for you? Do you get any error message?

The only thing that you must be aware about: each import creates independent space (or at least that's my impression). It is better to use properties for keeping global state.

Well I have the same question. I think due to this I am unable to build any BB 10 Qt project and getting below error.

Anybody knows how to solve this issue? cant develop becuz of this.

Build Error: Symbolic links not supported: disabling -L.

Compile Output:

00:17:02: Running steps for project untitled25...
00:17:03: Starting: "G:\bbndk\host_10_0_9_404\win32\x86\usr\bin\qmake.exe" C:\QtSDK\Workspace\untitled25\untitled25.pro -r -spec default "CONFIG+=debug" "CONFIG+=declarative_debug"
00:17:03: The process "G:\bbndk\host_10_0_9_404\win32\x86\usr\bin\qmake.exe" exited normally.
00:17:03: Starting: "G:\bbndk\host_10_0_9_404\win32\x86\usr\bin\make.exe"
make: Symbolic links not supported: disabling -L.
qcc -Vgcc_ntoarmv7le -c -Wno-psabi -lang-c++ -fstack-protector-strong -mcpu=cortex-a9 -g -Wall -W -D_REENTRANT -DQT_NO_IMPORT_QT47_QML -DQ_OS_BLACKBERRY -DQT_DECLARATIVE_DEBUG -DQT_DECLARATIVE_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/share/qt4/mkspecs/default -I../untitled25 -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtCore -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtGui -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtDeclarative -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4 -I../untitled25/qmlapplicationviewer -I. -I../untitled25 -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/freetype2 -I. -o qmlapplicationviewer.o ../untitled25/qmlapplicationviewer/qmlapplicationviewer.cpp
qcc -Vgcc_ntoarmv7le -c -Wno-psabi -lang-c++ -fstack-protector-strong -mcpu=cortex-a9 -g -Wall -W -D_REENTRANT -DQT_NO_IMPORT_QT47_QML -DQ_OS_BLACKBERRY -DQT_DECLARATIVE_DEBUG -DQT_DECLARATIVE_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/share/qt4/mkspecs/default -I../untitled25 -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtCore -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtGui -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtDeclarative -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4 -I../untitled25/qmlapplicationviewer -I. -I../untitled25 -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/freetype2 -I. -o main.o ../untitled25/main.cpp
G:/bbndk/host_10_0_9_404/win32/x86/usr/bin/moc.exe -DQT_NO_IMPORT_QT47_QML -DQ_OS_BLACKBERRY -DQT_DECLARATIVE_DEBUG -DQT_DECLARATIVE_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/share/qt4/mkspecs/default -I../untitled25 -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtCore -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtGui -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtDeclarative -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4 -I../untitled25/qmlapplicationviewer -I. -I../untitled25 -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/freetype2 -I. -D__QNXNTO__ ../untitled25/qmlapplicationviewer/qmlapplicationviewer.h -o moc_qmlapplicationviewer.cpp
qcc -Vgcc_ntoarmv7le -c -Wno-psabi -lang-c++ -fstack-protector-strong -mcpu=cortex-a9 -g -Wall -W -D_REENTRANT -DQT_NO_IMPORT_QT47_QML -DQ_OS_BLACKBERRY -DQT_DECLARATIVE_DEBUG -DQT_DECLARATIVE_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/share/qt4/mkspecs/default -I../untitled25 -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtCore -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtGui -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4/QtDeclarative -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/qt4 -I../untitled25/qmlapplicationviewer -I. -I../untitled25 -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include -Ig:/bbndk/target_10_0_9_1673/qnx6/usr/include/freetype2 -I. -o moc_qmlapplicationviewer.o moc_qmlapplicationviewer.cpp
qcc -Vgcc_ntoarmv7le -lang-c++ -Wl,-rpath-link,G:/bbndk/target_10_0_9_1673/qnx6/armle-v7/lib -Wl,-rpath-link,G:/bbndk/target_10_0_9_1673/qnx6/armle-v7/usr/lib -o untitled25 qmlapplicationviewer.o main.o moc_qmlapplicationviewer.o -LG:/bbndk/target_10_0_9_1673/qnx6/armle-v7/lib -LG:/bbndk/target_10_0_9_1673/qnx6/armle-v7/usr/lib -LG:/bbndk/target_10_0_9_1673/qnx6/armle-v7/usr/lib/qt4/lib -LG:/bbndk/target_10_0_9_1673/qnx6/x86/usr/lib/qt4/lib -lQtDeclarative -lQtScript -lQtSvg -lQtSql -lsqlite3 -lz -lQtXmlPatterns -lQtNetwork -lsocket -lQtGui -lQtCore -lm -lbps
00:17:16: The process "G:\bbndk\host_10_0_9_404\win32\x86\usr\bin\make.exe" exited normally.

Thanks for all the responses looks like FTS is there built in based on all the responses I received here and on BB cascades support forum