It's not a problem of Qt Creator. The mkspec used for the RPI3 is still valid unless your sysroot comes from a Debian Stretch were they have changed the library name.

You need to modify the mkspec under devices that matches the Rpi3

@Sivamani-V said in How to connect to mysql server in ubuntu 16.04?.:

QMYSQL Driver not loaded. Available drivers: QMYSQL QSQLITE QMYSQL3

This gets asked so many times, here & elsewhere. Googling for your message will bring up many hits. Under Linux/Ubuntu it's usually libmysqlclient or libqt5sql5-mysql or similar which is missing/has dependencies missing/wrong version.

Does the app work if you start it with --single-process added to the command line?

Hi @Tegan,

Not sure what the best approach is, but I'd:

check the installer's md5sum against https://download.qt.io/archive/qt/5.6/5.6.3/md5sums.txt compare the output of ldd qt-opensource-linux-x64-5.6.3.run on both hosts, then run the installer with gdb

Cheers.

I built qt and font show up now. Thanks a lot jsulm for the support.

I am experiencing this problem on 5.11.2 running Linux Mint. So it is still there.

Using the following formulation:
QColorDialog dlg(colored->getColor());
dlg.setOption(QColorDialog::DontUseNativeDialog);
dlg.setOption(QColorDialog::ShowAlphaChannel);
dlg.open(this,SLOT(slot_colorChanged(QColor)));
dlg.exec();

First problem: the dialog initializes with color black, not the given color. When pressing OK, the slot is triggered
but the color is always color white, whatever is selected in the dialg. So essentially it does not work at all.

using the formulation
QColor newColor = QColorDialog::getColor(m_color, this, QString(), QColorDialog::DontUseNativeDialog);
does work as was mentioned before

@raven-worx I don't have any experience with TTS either, also I can't find much info about the current infrastructure on Linux, resp. on KDE. I have installed speech-dispatcher. And I can make it speak in the terminal, using its own spd-say command. I'm not sure how speech-dispatcher and flite are related. I think speech-dispacher is an abstraction layer / daemon, and flite is one of several "engines" it can use.

spd-say --list-output-modules says:

OUTPUT MODULES
flite
cicero
generic
dummy
espeak

The following packages that seem to be relevant have been installed:

speech-dispatcher libspeechd2 flite libflite1 speech-dispatcher-flite libqt5texttospeech5 libqt5texttospeech5-dev qtspeech5-flite-plugin

Note that no qtspeech5-speechdispatcher-plugin (or similar) exists in the repo. But looking at the Qt Speech sources, it seems there should be such a plugin.

Anyways, when I build an application for testing ....

QTextToSpeech::availableEngines() returns "flite" availableLocales() gives "en_US" and availableVoices() says "kal16".

@ajcurtis said in QtCreator can not load plugins UBuntu 16.04:

QApplication: invalid style override passed, ignoring it.

But it is running now? If so then just ignore that warning.

@SGaist

@SGaist said in MySQL + Qt 5.7 integration on Ubuntu 16.04:

Indeed, however I did misread, the calls seem to have been done.
But something looks wrong since the .so files can't be found.

Interesting to see what ldd on libqsqlmysql.so displays now, after creating the link:

guilherme@k45a:~/Programs/Qt/5.7/gcc_64/plugins/sqldrivers$ ldd libqsqlmysql.so
linux-vdso.so.1 => (0x00007ffe33d5f000)
libmysqlclient.so.20 => /usr/lib/x86_64-linux-gnu/libmysqlclient.so.20 (0x00007f8c1fcb1000)
libQt5Sql.so.5 => /home/guilherme/Programs/Qt/5.7/gcc_64/plugins/sqldrivers/./../../lib/libQt5Sql.so.5 (0x00007f8c1fa6c000)
libQt5Core.so.5 => /home/guilherme/Programs/Qt/5.7/gcc_64/plugins/sqldrivers/./../../lib/libQt5Core.so.5 (0x00007f8c1f34d000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f8c1efcb000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8c1ec02000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f8c1e9e7000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f8c1e7e3000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8c1e5c6000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8c1e2bc000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f8c1e0a6000)
libicui18n.so.56 => /home/guilherme/Programs/Qt/5.7/gcc_64/plugins/sqldrivers/./../../lib/libicui18n.so.56 (0x00007f8c1dc0b000)
libicuuc.so.56 => /home/guilherme/Programs/Qt/5.7/gcc_64/plugins/sqldrivers/./../../lib/libicuuc.so.56 (0x00007f8c1d853000)
libicudata.so.56 => /home/guilherme/Programs/Qt/5.7/gcc_64/plugins/sqldrivers/./../../lib/libicudata.so.56 (0x00007f8c1be70000)
libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f8c1bc6d000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f8c1ba65000)
libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f8c1b754000)
/lib64/ld-linux-x86-64.so.2 (0x000055a9c6cac000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f8c1b4e3000)

Seems like it changed the entire dependency table.