General and Desktop

@mrjj Thank you so much. This takes some worry off my mind.

@Mohammadreza99A Why do you want to access a private variable from another class? Don't do that, use getter/setter. When using threads you would need to synchronise the access to avoid race conditions. Better would be to use signals/slots to exchange data between MyClass and Worker.

Finally I have found error in my code. It was hard because of weird processing. QString::split() works fine. But what about QRegExp - I do not remember why I used it instead of QRegularExpression. May be it looked simpler. This code was redesigned and regular expression was much more complex at beginning.

Nice! Happy coding

From the looks of it, you only want a copy of the content of the tree item.

Hi, Modify the protobuf_decl.output, protobuf_impl.output and protobuf_impl.depends paths to point to where you want.

After a lot more testing and comparing between systems with and without the issue, is does not seem to be related to network reliability after all. System sending regularly and constantly are OK systems spending sporadically take up ever more memory. When about a 100K is sent every 10-20 minutes and additional 40Mb is used up daily compared to sending ever minute. This memory in not released if QNetworkAccessManager is destroyed. Memory is taken during QnetworkAccessManager::post() and the amount can be anything between 2-300K to 3MB at a time and is not related to the amount of data sent. Does anyone have experience with cacheing in QNetworkAccessManager? What is cached by default and how to control it?

I can open this port by: So, as I said, the problem is not in O_LARGEFILE. There are just a few codes in QSP sources in github link This is not a sources, the sources is in.

@jsulm Oh, I didn't notice that the example the link said "For example, Manufacturer A could have an RSSI max value of 100 while Manufacturer B will return RSSI values anywhere from 0 to 127. " So,maybe rssi() == 127 means this signal is the best. Thank you so much!

@Ketan__Patel__0011 Exact error please. And also do complete rebuild: delete build folder, run qmake and build.

@itsnotaron said in How to code a loading'.' '..' '...' page that redirects to another ui after 2 seconds?: I don't need a loading page, but to make it more realistic/to get more marks, I want to add a 2 second loading page. You can make a fake loading screen, which simulates loading some stuff by using a QTimer which will increase the QProgressBar by some value. Skip the "task" - part. Just make the timer consecutively increase your progress by some amount of steps or some value or percentage https://doc.qt.io/qt-5/qprogressdialog.html#details

@Isidro-Perla Use signals & slots to send a signal to your MyOpenGLWidget which will cause a restart. https://doc.qt.io/qt-5/signalsandslots.html Something like this (in your MainWindow) connect(ui->pushbutton_restart, &QPushButton::clicked, myOGLW, &MyOpenGLWidget::restart); Then, make your widget reset / restart itself (in myOpenGLWidget class)

@Vinoth-Rajendran4 Use the official Qt docs: Visual Parent https://doc.qt.io/qt-5/qtquick-visualcanvas-visualparent.html#visual-parent Also this https://doc.qt.io/qt-5/qtquick-visualcanvas-topic.html#visual-parent Here is an example of visual (render) parent + childs. (Have a look at the item coordinate systems) https://doc.qt.io/qt-5/qtquick-visualcanvas-coordinates.html#worked-example See: QObject tree https://doc.qt.io/qt-5/qobject.html

Hi, I see. Thank you very much for your reply. Best regards!

@Kent-Dorfman said in Mixing QT with C++ Standard Library: I am generally paranoid of mixing Qt containers with STL containers Why's that? Have you experienced issues? @TauCeti said in Mixing QT with C++ Standard Library: is it feasible to mix QT commands with Standard Library commands? Yes. as far as I know QT Container are compatible with std-<algorithm> and std-iterators. Is this correct? Is this feasible? Does anybody use it? Does one need special considerations? Yes. Yes. Yes. Yes. For your last question, see the Implicitly Shared Iterator Problem: https://doc.qt.io/qt-5/containers.html#implicit-sharing-iterator-problem What std commands do you use in your QT code? Can you provide examples? e.g. std::sort() seems useful for me. Do you also mix std containers with QT container in one project? I quite happily do things like: Put QString in a std::pair Put std::shared_ptr<MyStruct> inside a QVector Use std::sort(), std::copy_if() on my QVector However, I avoid converting a Qt container to an STL container and vice-versa, like @Christian-Ehrlicher said.

Hi Use https://doc.qt.io/qt-5/qtextformat.html#setForeground instead of ui->textEdit->setTextColor(color2); then chF.setForeground(color2); [image: cwvveY.png]

@cpper Yeah I also found that odd as sorting on the first should also do it. But we since we create them empty for (int i = 1; i <= 4; ++i) table.setItem(row, i, new QTableWidgetItem()); and then fill them later in step 2, it might be related but i did not look into that further.

Hi SGaist. Sorry if my explanations lack experience here. However, I tried installing NVIDIA CUDA toolkit 10.2 Should that be enough to properly setup CUDA? Do I need to add something in my .pro file? Thanks Here is my .pro file (if necessary) #------------------------------------------------- # # Project created by QtCreator 2018-02-20T14:33:13 # #------------------------------------------------- QT += core gui opengl QT += network QT += opengl QMAKE_CXXFLAGS += -std=c++14 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets printsupport TARGET = MGA-GUI TEMPLATE = app INCLUDEPATH += /usr/local/include/opencv /home/tosson/Desktop/root/include /usr/local/include/ LIBS += -L/usr/local/lib -lopencv_core -lopencv_imgcodecs -lopencv_highgui -L/usr/local/lib/ -lhpdf $$system(root-config --glibs) $$system(root-config --libs --cflags) LIBS += -lglut -lGLU SOURCES += main.cpp\ mainwindow.cpp \ recomb.cpp \ qcustomplot.cpp \ singanalysis.cpp \ maianalysis.cpp \ spottrap.cpp \ qq.cpp \ spottrapped.cpp \ energyspectrumauto.cpp \ matrial.cpp \ englimits.cpp \ indexuser.cpp \ livestream.cpp \ frames.cpp \ gpuconnect.cpp \ parsoptimization.cpp \ progress.cpp \ unitcell.cpp \ baseclass.cpp \ dialog.cpp \ maincal.cpp \ glwidget.cpp \ analysisequation.cpp \ rings.cpp OTHER_FILES += rec.cu \ HEADERS += mainwindow.h \ recomb.h \ qcustomplot.h \ singanalysis.h \ maianalysis.h \ spottrap.h \ qq.h \ spottrapped.h \ energyspectrumauto.h \ matrial.h \ englimits.h \ indexuser.h \ livestream.h \ frames.h \ gpuconnect.h \ parsoptimization.h \ progress.h \ pixelstype.h \ spotstypy.h \ unitcell.h \ baseclass.h \ conv_pixel.h \ dialog.h \ pointtype.h \ analysisequation.h \ rings.h \ glwidget.h FORMS += mainwindow.ui \ recomb.ui \ singanalysis.ui \ spottrap.ui \ englimits.ui \ indexuser.ui \ frames.ui \ RESOURCES += \ pics.qrc win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../root/lib/release/ -lGraf3d else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../root/lib/debug/ -lGraf3d else:unix: LIBS += -L$$PWD/../root/lib/ -lGraf3d INCLUDEPATH += $$PWD/../root/include DEPENDPATH += $$PWD/../root/include win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../root/lib/release/ -lSpectrum else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../root/lib/debug/ -lSpectrum else:unix: LIBS += -L$$PWD/../root/lib/ -lSpectrum INCLUDEPATH += $$PWD/../root/include DEPENDPATH += $$PWD/../root/include DEPENDPATH += /usr/local/lib CUDA_SOURCES += rec.cu CUDA_SDK = "/usr/" # Path to cuda SDK install CUDA_DIR = "/usr/" # Path to cuda toolkit install # DO NOT EDIT BEYOND THIS UNLESS YOU KNOW WHAT YOU ARE DOING.... SYSTEM_NAME = unix # Depending on your system either 'Win32', 'x64', or 'Win64' SYSTEM_TYPE = 64 # '32' or '64', depending on your system CUDA_ARCH = sm_21 # Type of CUDA architecture, for example 'compute_10', 'compute_11', 'sm_10' NVCC_OPTIONS = --use_fast_math # include paths INCLUDEPATH += $$CUDA_DIR/include # library directories QMAKE_LIBDIR += $$CUDA_DIR/lib/ CUDA_OBJECTS_DIR = ./ # Add the necessary libraries CUDA_LIBS = -lcuda -lcudart # The following makes sure all path names (which often include spaces) are put between quotation marks CUDA_INC = $$join(INCLUDEPATH,'" -I"','-I"','"') #LIBS += $$join(CUDA_LIBS,'.so ', '', '.so') LIBS += $$CUDA_LIBS # Configuration of the Cuda compiler CONFIG(debug, debug|release) { # Debug mode cuda_d.input = CUDA_SOURCES cuda_d.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.o cuda_d.commands = $$CUDA_DIR/bin/nvcc -D_DEBUG $$NVCC_OPTIONS $$CUDA_INC $$NVCC_LIBS --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME} cuda_d.dependency_type = TYPE_C QMAKE_EXTRA_COMPILERS += cuda_d } else { # Release mode cuda.input = CUDA_SOURCES cuda.output = $$CUDA_OBJECTS_DIR/${QMAKE_FILE_BASE}_cuda.o cuda.commands = $$CUDA_DIR/bin/nvcc $$NVCC_OPTIONS $$CUDA_INC $$NVCC_LIBS --machine $$SYSTEM_TYPE -arch=$$CUDA_ARCH -c -o ${QMAKE_FILE_OUT} ${QMAKE_FILE_NAME} cuda.dependency_type = TYPE_C QMAKE_EXTRA_COMPILERS += cuda } DISTFILES += \ ../streaking/report_Nickel.pdf \ ../streaking/report_Aluminum.pdf \ ../streaking/pole22.jpg \ ../streaking/pole2.jpg \ ../streaking/pole.jpg \ ../streaking/img.jpg \ ../streaking/convimg.jpg \ ../streaking/333.jpg \ ../streaking/3D33_img.jpg \ ../streaking/3D_img2.jpg \ ../streaking/3D_img1.jpg \ ../streaking/3D_img.jpg \ ../streaking/pole2.png \ ../streaking/pole.png

Did you already read the Graphics View Overview in Qt's documentation ?