General and Desktop

@ocgltd said in Strange signal handling (nested eventloops): Since the db connection cannot be shared between threads Each thread can have its own db connection

@Christian-Ehrlicher Thank you very much for your great effort. The C++ container method solved my problem perfectly.

QTimer::singleShot is a static function so there's no need to create an instance for it.

Ohh yes thank you so much its already solved sorry for the inconvenience caused

@Sandres92 backgound-color - looks like a typo (missing r). Do you have any other stylesheets with backgound-color?

@HeerokNewbie https://doc.qt.io/qt-5/qjsondocument.html#setObject https://doc.qt.io/qt-5/qjsondocument.html#toJson

@harish__rajora said in How to read Japanese and Korean characters?: It takes char * as input And what encoding does it expect? ASCII, UTF16, UTF8, ...? For Japanese you have to use Unicode and that can't be represented in normal C ASCII string (char*).

@ocgltd I found StackOverFlow post which suggests using 'index' instead of 'createIndex' in my function. And that works. Can someone explain why? What's the difference?

@SGaist said in QAbstractItemDelegate.paint seems to be called with wrong option.rect: Just thinking quickly, shouldn't you adjust the rect position based on the index row ? In this case, images can have different aspect ratios, so I'd need ratio of each image before current one to calculate where to paint it. (It can be done, but seems to be going against design of delegate.) More importantly, values of rect seem to still affect how mouse events are handled, so even if I'd adjust paintings, selecting element's would work on offsets defined by rect and click event's wouldn't work properly. By the way, I think you should use QStyledItemDelegate as base class for your delegate since it's the default class used for the item views. Thanks for the tip!

Thanks. That helped

Wanted to do something similar and found this while checking if QProcess could handle it conveniently (it can't, as seen above). Just use std::system. Doing it with QProcess just makes extra work. E.g. for the OP: #include <cstdlib> std::system("adb -s device shell"); If you want to just open a command shell, the command depends on the platform but it'd be something like: std::system("cmd"); // windows std::system("/bin/bash"); // linux, maybe osx? // etc... For that Python example above: std::system("\"C:\\Program Files\\Inkscape\\python.exe\""); // or if necessary: std::system("cmd /K \"C:\\Program Files\\Inkscape\\python.exe\""); // or if python is in the path, just: std::system("python"); PS This whole thread is a bit silly. The OP didn't want to open a shell on a phone, and there's definitely good reasons to start adb in a console window (it's a console-based interactive shell for debugging an attached Android device). The OP wanted to start it in a console window so they could continue to use it in said console window after starting it.

Hi SGaist , thanks for your welcome... I'm drawing these lines like this chartview=QChartView(self.__candlechart) chartview.setRubberBand(QChartView.HorizontalRubberBand) chartview.setRenderHint(QPainter.Antialiasing) lineserie1=QLineSeries() for i in self.times: lineserie1.append(QPointF(i,random.random())) pen = lineserie1.pen() pen.setWidth(3) pen.setBrush(QBrush(QColor(255,0,0))) lineserie1.setPen(pen) lineserie2=QLineSeries() for i in self.times: lineserie2.append(QPointF(i,random.random())) pen = lineserie2.pen() pen.setWidth(3) pen.setBrush(QBrush(QColor(0,0,255))) lineserie2.setPen(pen) self.__candlechart.addSeries(lineserie1) self.__candlechart.addSeries(lineserie2) If I change the order (I mean add the lines before set rubber band option I got the same result. Thanks!

So my suggestion was correct ?

@SGaist Problem is solved after I added Q_DECLARE_METATYPE for my custom structures. Thank you

Hi Rifky , I know that I' m not answering exactly to your question , but maybe this link will help you, or inspire you. The graph shown another ways to show info https://doc.qt.io/qt-5/qtcharts-donutbreakdown-example.html Bye!

You can also start fresh and reconfigure your project. With QtCreator closed; delete the build folder(s) and the CMakeLists.txt.user file in your project folder. Then open the project again in QtCreator.