@Xenoshell There is literally like one occurrence on the whole of the Interweb of your error in vainfo (va_openDriver() returns -1)! https://bugs.launchpad.net/ubuntu/+source/libva-utils/+bug/1719150 It was suggested: Please install mesa-va-drivers and try gain. I suggest you try that.... :)

@gizalp Why do you think python (or anything else) is going to open any terminal window? And what OS are you on anyway? For QProcess:setProgram you should have process.setProgram("python");, only. But in this case I think it's getting overridden by your process.start("python test.py"); so it doesn't matter, but it's wrong. If you want to grab a sub-process's output, you have to handle QProcess::readyReadStandardOutput(), and in there something like QByteArray QProcess::readAllStandardOutput(), if that's what you mean by "How can I get the 'Hello' output?". How this relates to Trying to implement thumbnail list I have no idea....

Yeah i feel like i do sudo apt-get update && upgrade at least once a day. I just checked about SIP and i compiled it from source but i cant remember if i actually used the command make and make install. Does that mean i have to reinstall pyqt5 again? I guess i just open a new thread. Thanks for all the help @SGaist

@gizalp said in Qt Signal Slot: @mostefa Thanks, that fixed my problem! You are welcome =)

What behaviour do you get with QSplitter ?

There's nothing wrong with GET request, since it has no payload, just a header. Problems begin with POST. Server side is pretty simple, with one exception: it sends HTTP reply header ASAP and THEN launches CGI script. Here is a Wireshark dump of an interconnection with python server: http://umod47.ru/qtfail.pcapng

Hey @m-sue , thanks for your reply. The problem isn't that cursor.movePosition(QTextCursor.NextCharacter) does not move the cursor, but rather that self.setHtml() sends the cursor to the end regardless of its current position. This does not explain why self.setTextCursor(cursor) has no effect.

IIRC something like: ui.filters.currentTextChanged.connect(proxyModel.setFilterFixedString)

separate QTreeWidget in a QTreeView and a QStandardItemModel. create a QSortFilterProxyModel and set the QStandardItemModel as its suorce model connect currentTextChanged from the combobox to setFilterFixedString of QSortFilterProxyModel

A quick google search returns this article which covers most aspects of this subject.

Well, there is nothing wrong about sharing preferences. But it's doesn't matter. We are using kubuntu 12.04 and PyQt-4.10.484.4. For now, I do windowB.activateWindow() when my mouse enters windowA but it's a bit limited and I don't really like it.

@jsulm thanks for you reply! it is work! thanks again!

@SGaist Hello SGaist, thanks a lot for your explanation. It works great!

@SGaist Thanks for the reply! Not sure why, but this line in addNewSourceFolder did it; item.setSizeHint(picwidget.sizeHint())

@Goffer Well, without code it is hard to help...

Thanks, SGaist. QtSingleApplicaiton is an alternative solution to singleton , I will make a try.

Hello @Wieland, In my case, I am integrating my interface as a plugin in QGIS. So, when closing all the windows and launching from QGIS, the main window is displayed. I don't really know If I need to destroy in this case. Thanks for your reply.