Move from QML Only Application to Qt Quick Application with C++

[A Former User]

@Running build steps for project Main...
Configuration unchanged, skipping qmake step.
Starting: "/usr/bin/make" -w
make: Entering directory /Users/kp/Desktop/Precision Work/Harvest DU Repository/Main-build-desktop' g++ -c -pipe -g -gdwarf-2 -Wall -W -DQT_DECLARATIVE_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/Qt4.7/mkspecs/macx-g++ -I../Main -I/Library/Frameworks/QtCore.framework/Versions/4/Headers -I/usr/include/QtCore -I/Library/Frameworks/QtGui.framework/Versions/4/Headers -I/usr/include/QtGui -I/Library/Frameworks/QtDeclarative.framework/Versions/4/Headers -I/usr/include/QtDeclarative -I/usr/include -I../Main/qmlapplicationviewer -I. -I../Main -I. -F/Library/Frameworks -o main.o ../Main/main.cpp g++ -headerpad_max_install_names -o Main.app/Contents/MacOS/Main main.o qmlapplicationviewer.o moc_qmlapplicationviewer.o -F/Library/Frameworks -L/Library/Frameworks -framework QtDeclarative -L/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib -F/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib -framework QtScript -framework QtSvg -framework QtSql -framework QtXmlPatterns -framework QtOpenGL -framework QtNetwork -framework QtGui -framework QtCore ld: warning: directory '/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib' following -L not found ld: warning: directory '/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib' following -F not found Copying application data... cp: Repository/Main/../QML: No such file or directory make: *** [copydeploymentfolders] Error 1 make: Leaving directory /Users/kp/Desktop/Precision Work/Harvest DU Repository/Main-build-desktop'
The process "/usr/bin/make" exited with code 2.
Error while building project Main (target: Desktop)
When executing build step 'Make'@

[A Former User]

Seems to be some issue with the path

bq. cp: Repository/Main/../QML: No such file or directory

Its not able to find the above location, please verify this in your code.

[A Former User]

The folder exists... and all that is in my cpp file is this:

@#include <QtGui/QApplication>
#include "qmlapplicationviewer.h"

int main(int argc, char *argv[])
{
QApplication app(argc, argv);

QmlApplicationViewer viewer;
viewer.setOrientation(QmlApplicationViewer::ScreenOrientationAuto);
viewer.setMainQmlFile(QLatin1String("QML/QMLFinal.qml"));
viewer.showExpanded();

return app.exec();

}
@

[A Former User]

Check if the folder exists at this path

@/Users/kp/Desktop/Precision Work/Harvest DU Repository/Main-build-desktop@

[A Former User]

It does not. Do I need to copy it in there manually?

[A Former User]

copying it manually will fix it. But you will have to add it in your .pro file or better still put QML into your resource file.

[A Former User]

how do I add it to my pro file or resource file? Will doing so negate the need to move it in manually?

[A Former User]

[quote author="kyleplattner" date="1293047005"]how do I add it to my pro file or resource file? Will doing so negate the need to move it in manually?[/quote]

You can add them as OTHER_FILES to .pro

[A Former User]

[quote author="kyleplattner" date="1293047005"]how do I add it to my pro file or resource file? Will doing so negate the need to move it in manually?[/quote]

The best option is to use "resource":http://doc.qt.nokia.com/4.0/resources.html. You can use Qt Creator to add a new resource. Just check the docs for more info.

[A Former User]

Seems like this is a bug that needs fixing.

[A Former User]

Still having problems with this:

ld: warning: directory '/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib' following -L not found
ld: warning: directory '/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib' following -F not found

Any ideas there?

[A Former User]

[quote author="QtK" date="1293047938"]
[quote author="kyleplattner" date="1293047413"]Seems like this is a bug that needs fixing. [/quote]

No its not a bug. But yes it can be enhanced, so that Qt Creator does it automatically[/quote]

[A Former User]

[quote author="kyleplattner" date="1293047844"]Still having problems with this:

ld: warning: directory '/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib' following -L not found
ld: warning: directory '/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib' following -F not found

Any ideas there?[/quote]

Its a warning right. Your app must be compiled properly now.

[A Former User]

Added the .qrc and still having this error stop my build:

@Running build steps for project Main...
Configuration unchanged, skipping qmake step.
Starting: "/usr/bin/make" -w
make: Entering directory /Users/kp/Desktop/Precision Work/Harvest DU Repository/Main-build-desktop' /Developer/Tools/Qt/rcc -name Main ../Main/Main.qrc -o qrc_Main.cpp g++ -c -pipe -O2 -Wall -W -DQT_NO_DEBUG -DQT_DECLARATIVE_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/Qt4.7/mkspecs/macx-g++ -I../Main -I/Library/Frameworks/QtCore.framework/Versions/4/Headers -I/usr/include/QtCore -I/Library/Frameworks/QtGui.framework/Versions/4/Headers -I/usr/include/QtGui -I/Library/Frameworks/QtDeclarative.framework/Versions/4/Headers -I/usr/include/QtDeclarative -I/usr/include -I../Main/qmlapplicationviewer -I. -I../Main -I. -F/Library/Frameworks -o qrc_Main.o qrc_Main.cpp g++ -headerpad_max_install_names -o Main.app/Contents/MacOS/Main main.o qmlapplicationviewer.o moc_qmlapplicationviewer.o qrc_Main.o -F/Library/Frameworks -L/Library/Frameworks -framework QtDeclarative -L/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib -F/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib -framework QtScript -framework QtSvg -framework QtSql -framework QtXmlPatterns -framework QtOpenGL -framework QtNetwork -framework QtGui -framework QtCore ld: warning: directory '/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib' following -L not found ld: warning: directory '/tmp/qt-stuff-6474/source/qt-everywhere-opensource-src-4.7.0/lib' following -F not found Copying application data... cp: Repository/Main/../QML: No such file or directory make: *** [copydeploymentfolders] Error 1 make: Leaving directory /Users/kp/Desktop/Precision Work/Harvest DU Repository/Main-build-desktop'
The process "/usr/bin/make" exited with code 2.
Error while building project Main (target: Desktop)
When executing build step 'Make'@

[A Former User]

The error is same as you received above right. Please try it first and then make an attempt to post or ask - this way you will learn better.

Also you might have added it in your .qrc, but are you loading qml file from that path.

[A Former User]

When I try running the compiled application I get:

<Unknown File>: File error for URL file:///Users/kp/Desktop/Precision Work/Harvest DU Repository/Main-build-desktop/Main.app/Contents/Resources/QML/QMLFinal.qml

[A Former User]

Would someone be willing to make a Wiki on the process of going from a QML only application to a Qt Quick C++ Application. It seems like a process many people go through so it would be helpful. I have found the process really difficult and I still have not got it done yet. Thanks.

[mbrasser]

What version of Creator are you using? This might be something that has been recently improved -- I'm compiling Creator from source, and the conversion from QML-only to QML + C++ project seems to "just work", at least for a small test case (and in general, QML support in Creator has been progressing at a very rapid pace in recent months). I've found the Creator team very responsive to feedback -- if you have suggestions for improving the process I'd highly recommend adding a report on bugreports.qt.nokia.com.

Regards,
Michael

[A Former User]

Qt Creator 2.0.94 (2.1.0-rc1)
Based on Qt 4.7.1 (64 bit)

Built on Nov 25 2010 at 01:05:40

From revision f9ba753654

[A Former User]

Try to build it in a directory without spaces in it's path. At least under windows the "Qt Quick Application" template won't work in a directory with spaces in it's path. The windows symptoms were a failure in the copydeploymentfolders step and this looks similar.

There was a bug reported with a patch to fix this but it was closed as a "won't fix" from memory since qmake apparently doesn't handle spaces well either.