General and Desktop

@Cervo2paille If you go to https://doc.qt.io/qt-6/qtsql-index.html you will see what you need to add to CMakeLists.txt file.

@marcelnitan said in Draw vertical line at mouse position: ponter.DrawLine What is that? To paint on widgets subclass needed Qt widget class and overrid paintEvent and use https://doc.qt.io/qt-6/qpainter.html for painting. To draw a line use https://doc.qt.io/qt-6/qpainter.html#drawLine-2

Using pixmap.fill(Qt::transparent); solved the problem Thanks a lot

@Cervo2paille your QMainWinow instance it telling you to "Go Fish". Nothing you can do about it. Use a QDialog or one of its derivatives. That said, what exactly do you want to archive here, can you describe it a bit more?

@jsulm @Chris-Kawa Thanks both. I have easily managed to sort my widget by using grid layout as you have suggested

Then please mark this topic as solved, thx.

Hi and welcome to devnet, Did you profile your code ? Are you redoing the calculations every time the widget is painted ? Did you consider creating a QPixmap once and update it when needed rather than repaint everything every time ?

Hi The tricky part is the drag a rect outside the Qt application. I used the transparent window solution as talked about here http://www.ifnamemain.com/posts/2014/Jul/11/screen_capture_1/

@stretchthebits said in QGroupBox and positioning a button on a QGroupBox: And why not calculate and position controls ourselves? You can if you want to do all the calculations by yourself. But this is not trivial and what's the layout manager is for.

You can use a QStackedWidget and change current widget.

Does it preserve transparency? I don't know. Check. Do you mean lockbits? Yeah, probably, although from what I understand it also does a copy and conversion to the format you specify, so maybe it's not worth it.,

Ah okay, seems like the spelling has been changed with the 2022c release of the timezone data (according to https://www.iana.org/time-zones).

Can QWebSocket be created and used in QThead? Yes why should it not?

@ocgltd said in QFile permission not reporting correctly: I couldn't imagine I found such a bug. You produced a simple example, minimal code, clear output to show bad behaviour. If everybody did similar that would be really great :)