I had a similar problem and it was solved using jecjackal’s comment. As sjwarner said, it would be much more noticeable in the form of an answer. So I’ll provide it. For the benefit of any future viewers. Again, it isn’t my answer! Appreciate jecjackal for it! As it is said in the Qt’s stylesheets … Read more
Finally I am starting to be happy. When adjusting this question I had to try all the ways how to define LIBS. Listing them manually helped, at first I wrote them somehow wrong. This is how it works finally: LIBS += -LC:\\Programs\\opencv24\\opencv_bin2\\bin \ libopencv_core240d \ libopencv_highgui240d \ libopencv_imgproc240d \ libopencv_features2d240d \ libopencv_calib3d240d \
I had this problem as well. This fixed it for me: Go to your MinGW folder (should be C:\MinGW) Open the bin folder. There should be a file called libstdc++-6.dll Copy this into the same directory as your executable. That should work…
Use ldd (man ldd) to show shared library dependencies. Running this on libqxcb.so …/platforms$ ldd libqxcb.so shows that xcb depends on libQt5DBus.so.5 in addition to libQt5Core.so.5 and libQt5Gui.so.5 (and many other system libs). Add libQt5DBus.so.5 to your collection of shared libs and you should be ready to move on.
Michal Kottman’s answer is valid and give expected result for some images but it’ll fail on some cases. Here is a solution i found to that problem. QImage imgIn= QImage((uchar*) img.data, img.cols, img.rows, img.step, QImage::Format_RGB888); Difference is adding img.step part. qt won’t complain without it but some images won’t show properly without it. Hope this … Read more
I guess you can use setItemDelegate method of the treeview to setup custom painter for your treeview items. In the delegate’s paint method you can use QTextDocument to load item’s text as html and render it. Please check if an example below would work for you: treeview initialization: … // create simple model for a … Read more
The error is caused because the program can’t find qwindows.dll qwindows.dll has to be in a folder named platforms so that the path from your executable to the dll is platforms/qwindows.dll Whereas this wasn’t enough in my case. I had also to add following line at the beginning of my main() QCoreApplication::addLibraryPath(“./”); Then everything worked.
Starting from Qt 5.2, there is windeployqt tool you can use. Just run it from command line to get help. But basic usage is, give it the .exe file, it will copy Qt dependencies to go with it. You will want to use –qmldir option to let the tool know where your QML files are, … Read more
Introduction The PIMPL is a private class that contains all of the implementation-specific data of the parent class. Qt provides a PIMPL framework and a set of conventions that need to be followed when using that framework. Qt’s PIMPLs can be used in all classes, even those not derived from QObject. The PIMPL needs to … Read more
Use isatty: #include <stdio.h> #include <io.h> … if (isatty(fileno(stdin))) printf( “stdin is a terminal\n” ); else printf( “stdin is a file or a pipe\n”); (On windows they’re prefixed with underscores: _isatty, _fileno)