General and Desktop

I found a solution. Not the expected, for this reason I will not mark it as solved, but works QString thresholdText = "Threshold " + QString::number(threshold); set2->setLabel("<b><font size=4 face = 'Nina'>"+thresholdText+"</font></b>");

Now I tried this code on Ubuntu 18.04, the program can run but don't get the result before using threading. (Nothing drew).

@Julian I don't know how behaves canReadLine() with binary data. But if you send "a 100 value" from a mobile, this probably means that you are sending the data in BINARY but by using readLine(), you are trying to read data in ASCII. So you have to use the same format for sending and reading the data. Can you try to send a string "100\n" from your mobile? This should work In binary, this will make the following frame: [0x31, 0x30, 0x30, 0x13] in hex or [49, 48, 48, 19] in integer.

thank you so much for information @beecksche i will check it out

@Hetal Have you rerun qmake and rebuilt of whole application? After checks above you need to make sure that you are compiling in debug mode and use the debugger. With the debugger you can set break points and see how far you can get without crash.

Hi, uses the class QFileInfo, and you pass to its constructor your file or the path of your file then to see the extension of your file you will use the suffix() method of the class QFileInfo

me too,i aslo have this error

Thank you very much @mrjj j for your help because it works well; sorry for the delay in my answer, the school really took too much of my mind once again I'm sorry

@koahnig thank you very much. I really appreciate the explanations

@qxoz This "works" but does not use 255.255.255.255 as broadcast address. Instead, it uses the network's broadcast address (e.g. 192.168.0.255)

hhmmmm @JKSH You are right. It is my complete oversight by just looking the list clear.

thanks very much

@J.Hilk said in Connection to worker(QThread) get broken in 5.12 update: @sierdzio uh really? hadn‘t yet the time to download it. I was hoping for magical fixes of a couple of issues I had I have a release date next week and I kind of wanted to use the new lte 😭 Try it out, maybe it'll work for you. I didn't yet have the time to check and report the issues, but it is mighty annoying that working apps suddenly have all their layouts completely broken - and no warnings or errors on the console. "Dear developer, guess what we've changed" kind of thing. I think I tried it back in Beta1 stage and the app worked, so maybe it will be fixed soon. As far as I know, Qt 5.12.1 already has 200+ bug fixes prepared (if you wonder why on earth would they release 5.12.0 when they already have hundreds of patches ready... I guess they rushed it so they can release during Qt conference).

@Kycho said in Conditional error: QPushButton *test[2]; This declaration is array of pointers. These two pointers are not initialised with anything. So you don't know what will get initialised. It will have some random value. !<randomvalue> will be always false. So result is as per your code.

@Princein I understand you solved your issue with help from the community, so please mark your post as SOLVED. Thanks

Hi, I am using QT 5.11. It was a build problem I gess. I did a Make Clean / Make Install and it worked. Thank You!

Hi Well its fairly easy to make. https://forum.qt.io/topic/24530/solved-shortening-a-label/3 you can just promote your widgets to ElideLabel http://doc.qt.io/qt-5/designer-using-custom-widgets.html make it easy to switch them out.