Fade out sound

[DenisKormalev]

AFAIK desktop Qt in QtSDK doesn't contain QtMobility. You have to build it manually or use one precompiled (if you use some package-based linux distro it will be easy to install it from repos).

[Swoone]

It does contain it. The create project wizard even supports creating a mobile project. Which still feels weird since I am targeting a 52" inch desktop environment ;-)

This is the .pro file created (and my changes):

@

Add files and directories to ship with the application

by adapting the examples below.

file1.source = myfile

dir1.source = mydir

DEPLOYMENTFOLDERS = # file1 dir1

symbian:TARGET.UID3 = 0xE80DF1B4

Smart Installer package's UID

This UID is from the protected range

and therefore the package will fail to install if self-signed

By default qmake uses the unprotected range value if unprotected UID is defined for the application

and 0x2002CCCF value if protected UID is given to the application

#symbian:DEPLOYMENT.installer_header = 0x2002CCCF

Allow network access on Symbian

symbian:TARGET.CAPABILITY += NetworkServices

If your application uses the Qt Mobility libraries, uncomment

the following lines and add the respective components to the

MOBILITY variable.

CONFIG += mobility
MOBILITY += multimedia

SOURCES += main.cpp mainwindow.cpp
HEADERS += mainwindow.h
FORMS += mainwindow.ui

Please do not modify the following two lines. Required for deployment.

include(deployment.pri)

qtcAddDeployment()

@

And here is my main.cpp:

@
#include "mainwindow.h"
#include <QApplication>
#include <QMediaPlayer>

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

MainWindow mainWindow;
mainWindow.setOrientation(MainWindow::ScreenOrientationAuto);
mainWindow.showExpanded();

return app.exec();

}
@

And it does not compile for previous posted reasons!

[DenisKormalev]

Qt Creator is only part of Qt SDK and another part is Qt library itself. Your errors really looks like QtM is missing, aren't they?

[loladiro]

Do you have
@
#include <QtMultimediaKit>
@
and more importantly, did you select Qt Mobility APIs in the Updater?

[Swoone]

Yes, QtM appears to be missing. But when I go this url it says QtM is part of the SDK:

https://qt.nokia.com/products/qt-addons/mobility

That's also claimed on this page, from where I downloaded and installed the SDK:

https://qt.nokia.com/downloads

Check these screenshots from my system for more details:

http://www.vanmezelf.nl/images/screenshot.png
http://www.vanmezelf.nl/images/screenshot-2.png

[DenisKormalev]

It can be part of mobile libraries (symbian, maemo), I'm not sure on this btw (I'm using mostly selfbuilded Qt or Qt from my linux repo).

[loladiro]

Try copying the mobility.prf from QtSDK/Simulator/Qt/gcc/mkspecs/features to QtSDK/Desktop/Qt/gcc/mkspecs/features

EDIT: This might not work. Don't be disappointed if it doesn't.

[Swoone]

Okay, thanks for your efforts anyway :-)

[Swoone]

I did. Same errors after reloading and rebuilding the project.

[Swoone]

Finally I succeeded achieving this in Phonon on Windows 7. I just adjusted the volume level to create the fade out.