General and Desktop

@kook said in having trouble reading from textstream: QString str = in.readAll(); ... while (in.readLineInto(&line)) If you have already done a readAll() from the stream, where do you expect a subsequent readLineInto() to start reading from? Either do your work on the str containing all the read data or don't do that and do the readLineInto(), not both. Or if you do want to use both as you have shown, it is not surprising you have to go datafile.seek(pos); to reposition the reader; but I would either do everything off the str or everything off the in.

@KroMignon said in Proper use of QPrivateSignal: @jeremy_k said in Proper use of QPrivateSignal: Did you try the code above? QTimer::timeout is a private signal, and yet still callable using a clang 13 C++. Sorry, now I understand what you are meaning... sad situation :( Or curious. I don't know if this is a failure with Qt, C++, or my understanding.

@KARMA said in executable file is not created when project is started: What should I do to turn this file into a ready-to-run .exe on windows? You need to build your project on Windows...

@SPlatten said in QObject: Cannot create children for a parent that is in a different thread: @J-Hilk , thank you, I will give that a go, although the UDP goes to all clients. I know, I usually have an ID - byte at the front of my UDP datagrams, that identifies it as a Datagram for all or for a specific recipient

@WesLow If your program uses functions from libzmq. compiled. and linked cleanly then the linker options are OK (but possibly not perfect). If you built and installed libzmq as you describe then the result is installed under /usr/local/bin, lib etc. The "-L" part of your LIBS variable is wrong but is possibly not required because /usr/local/lib will often be searched by default. If the black screen is from your running program then that is a different problem.

@lincoln Actually you could simply move these two lines QVBoxLayout *mainLayOut=new QVBoxLayout(&licenciDlg); QTextEdit *teLicencia=new QTextEdit(&licenciDlg); after if(!fileName.open(QFile::ReadOnly | QFile::Text)){...} then there is no need to delete anything. Create things when they are needed, not before.

@Mitzury said in Not Responding during install: And i'm close Windows 10 (disable) defender. Yes, try this. I never had such issues on Windows 10, but who knows...

@SandSnip3r Yes, Region of interest. You do not resize text items at all since font size does not change. You always keep these text items on the top of all items in QGraphicsView if they are visible. Simply move them in the view(their positions change) when ROI changes(zooming). Like they are floating on the view.

@Nethzz said in cannot open file 'shell32.lib': @SGaist plz can you tell me how to find shell.32 lib automatically?? ":-1: error: LNK1104: cannot open file 'shell32.lib'" How are you linking to it ?

@Christian-Ehrlicher Hi Seems to call it from QPushButton::sizeHint() but I failed to find way to trigger it without altering text. I guess for full disclosure the source is needed and single step :9 I use wobog for it.

@Andrea_M It looks like the OpenCV libs are not passed to the linker. Do a complete rebuild: delete build folder, run qmake and build.

Hi. Thanks both. I installed qt in d:\qt. It is looking explicitly for files in c:\users\name\qt. which is currently empty. I can try to run from the IDE or launch the exe with the same result. I understand programs dont need .cpp to run, its for compiling. However, it wants it. Probably because im running in debug and its trying to link a pdb. I have no definitive proof that CCleaner did it but there is a trend. Works been very busy so have done what mrjj said, but i shall try now!

Great thanks!. Let me give it a try :)

Hi Qt should be able to scale SVG. or any vector format. Only if you use some libs for it. Qt dont support many vector formats besides SVG will I be able to run a Qt application at the boot of a Linux system startup, Even the desktop is not required to be loaded. Yes but you will need an Xserver or similar. and do note that open Qt has less options than pay for Qt in this area. https://doc.qt.io/QtForDeviceCreation-5.12/qtb2-index.html but yes its possible if you know your way around linux. I dont know what use case really is but make sure its not covered from things like https://imagemagick.org/index.php but its mostly raster based.

I tried Even in picture above, I took a screenshot from 5 best repositories

Looks like latitude and longitudes were enough to calculate the right angle for the marker to point to the center of the sphere. Here is the final result: Node{ position: calculatedPosition() eulerRotation{ x: 180-latitude y: longitude z: 0 } //Properties property int radiusEarth: 1180 property real latitude: 0 property real longitude: 0 Node { Image { anchors.centerIn: parent source: "qrc:/3DGlobe/textures/Hexagon_LightGreen.png" } } //Functions function calculatedPosition(){ var latitude_rad = latitude * Math.PI / 180; var longitude_rad = longitude * Math.PI / 180; var zPos = radiusEarth * Math.cos(latitude_rad) * Math.cos(longitude_rad); var xPos = -radiusEarth * Math.cos(latitude_rad) * Math.sin(longitude_rad); var yPos = radiusEarth * Math.sin(latitude_rad); return Qt.vector3d(-xPos-10, yPos+10, zPos+10) } } My pointer is 2d so this could need a 180 degree rotation with a 3d pin.

@jsulm Thank you.