General and Desktop

Very, very interesting. Never knew about that QMAKE_SUBSTITUTES. In my project file: GIT_VERSION = $$system(git --git-dir="C:/wifibutton"/.git --work-tree="C:/wifibutton" describe --always --tags) win32 { // this is to remove characters that could prevent compilation. GIT_VERSION ~= s/-\d+-g[a-f0-9]{6,} } QMAKE_SUBSTITUTES += config.h.in and config.h.in: #ifndef CONFIG_H_IN #define CONFIG_H_IN #define APP_VERSION '"$$GIT_VERSION"' #endif // CONFIG_H_IN and in my source code: QString version(APP_VERSION); // etc. Thanks!

@Helg1980 said in How do I delete the current QTreeWidget element correctly?: QCssParser::parseColorValue: Specified color without alpha value but alpha given: 'rgb 27, 29, 35, 0' You have a css somewhere which defines a wrong color rgb value.

@A-Newbie said in QFile, QThread, QConcurrent and how to Qt: Regardless, I got answers pretty much to all of my questions and everyone helped a lot. great 👍 Is there a way to simply have this topic as solved without picking a specific answer? sure bottem right side, topic tools button, simply set it to solved there

@mganesh Please read through https://doc.qt.io/qt-5/signalsandslots.html, looking at the examples. Please move away from SIGNAL/SLOT() macros, which are very old, and use the "new" syntax described there.

@Merlino Try to start it with strace: strace ./YOUR_APP You can post its output here. It can give some hints.

It looks like "model" is a C++ object, but I cannot trace where it is added or exposed to QML. If anyone can tell me how I can trace this ?

@Bonnie It was the reason. Thank you very much!

@Bonnie OK, thank you.

@jsulm Thank you! That makes a lot of sense. I will go with a SQLite database (or whatever is simplest).

@helloworldddd said in DHT11 Sensor with RPI: do u know how to use plot values to time, time as x axis on pyqtgraph? Sorry, I never used pyqtgraph. Did you check its documentation?

I have given up on that project for now. It has many many bugs :(

Okay so that got me going in the correct direction, My headers were actually okay, but I was not running the commands the right way. I was using a standard old cmd.exe, which appeared to have gcc.exe configured in the path, alone with g++.exe and mingw32-make.exe, except for some reason the "\bin" directory was not in the PATH variable somehow. I assumed that it was because it found gcc.exe, and I was wrong (still not sure how I was wrong with that logic). TL;DR there is a "mingw-w64.bat" in the PROGFIL~1 directory that you need to execute (which sets the PATH) and then run the configure.bat command inside that window that pops up.

Attached it to a QDialog and it worked. Woops.

I fixed the problem by forcing a compiler and manually getting the dll from the correspondant compiler Thanks for the help and reactivity

@jsulm Ah ok thank you :]