General and Desktop

Yes, I not properly read documentation and really mess with indexes, thank you for the answer .

great Thank You!

@vadim.savchuk Take a look at the links I posted. For example http://doc.qt.io/qt-5/qmake-advanced-usage.html could be helpful.

@jsulm compiler output looks like this: ../NicksImageProcessor/mainwindow.cpp: In member function 'void MainWindow::runLinescanClicked()': ../NicksImageProcessor/mainwindow.cpp:79:132: error: no matching function for call to 'mappedReduced(QList<linescanData>&, linescanIntermediate (*)(const linescanData&), cv::Mat (*)(cv::Mat&, const linescanIntermediate&), QtConcurrent::ReduceOption)' QFuture<cv::Mat> final = QtConcurrent::mappedReduced(images, &linescanLoadAndPick, &linesToImage, QtConcurrent::UnorderedReduce); ^ In file included from C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/QtConcurrentMap:1:0, from ../NicksImageProcessor/mainwindow.cpp:7: C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:121:21: note: candidate: template<class ResultType, class Sequence, class MapFunctor, class ReduceFunctor> QFuture<T> QtConcurrent::mappedReduced(const Sequence&, MapFunctor, ReduceFunctor, QtConcurrent::ReduceOptions) QFuture<ResultType> mappedReduced(const Sequence &sequence, ^ C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:121:21: note: template argument deduction/substitution failed: ../NicksImageProcessor/mainwindow.cpp:79:132: note: couldn't deduce template parameter 'ResultType' QFuture<cv::Mat> final = QtConcurrent::mappedReduced(images, &linescanLoadAndPick, &linesToImage, QtConcurrent::UnorderedReduce); ^ In file included from C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/QtConcurrentMap:1:0, from ../NicksImageProcessor/mainwindow.cpp:7: C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:134:74: note: candidate: template<class Sequence, class MapFunctor, class ReduceFunctor> QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> QtConcurrent::mappedReduced(const Sequence&, MapFunctor, ReduceFunctor, QtConcurrent::ReduceOptions) QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> mappedReduced(const Sequence &sequence, ^ C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:134:74: note: template argument deduction/substitution failed: C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h: In substitution of 'template<class Sequence, class MapFunctor, class ReduceFunctor> QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> QtConcurrent::mappedReduced(const Sequence&, MapFunctor, ReduceFunctor, QtConcurrent::ReduceOptions) [with Sequence = QList<linescanData>; MapFunctor = linescanIntermediate (*)(const linescanData&); ReduceFunctor = cv::Mat (*)(cv::Mat&, const linescanIntermediate&)]': ../NicksImageProcessor/mainwindow.cpp:79:132: required from here C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:134:74: error: invalid use of incomplete type 'struct QtPrivate::ReduceResultType<cv::Mat (*)(cv::Mat&, const linescanIntermediate&)>' In file included from C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:49:0, from C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/QtConcurrentMap:1, from ../NicksImageProcessor/mainwindow.cpp:7: C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentfunctionwrappers.h:246:8: note: declaration of 'struct QtPrivate::ReduceResultType<cv::Mat (*)(cv::Mat&, const linescanIntermediate&)>' struct ReduceResultType; ^ In file included from C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/QtConcurrentMap:1:0, from ../NicksImageProcessor/mainwindow.cpp:7: C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:148:21: note: candidate: template<class ResultType, class Iterator, class MapFunctor, class ReduceFunctor> QFuture<T> QtConcurrent::mappedReduced(Iterator, Iterator, MapFunctor, ReduceFunctor, QtConcurrent::ReduceOptions) QFuture<ResultType> mappedReduced(Iterator begin, ^ C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:148:21: note: template argument deduction/substitution failed: ../NicksImageProcessor/mainwindow.cpp:79:132: note: deduced conflicting types for parameter 'Iterator' ('QList<linescanData>' and 'linescanIntermediate (*)(const linescanData&)') QFuture<cv::Mat> final = QtConcurrent::mappedReduced(images, &linescanLoadAndPick, &linesToImage, QtConcurrent::UnorderedReduce); ^ In file included from C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/QtConcurrentMap:1:0, from ../NicksImageProcessor/mainwindow.cpp:7: C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:162:74: note: candidate: template<class Iterator, class MapFunctor, class ReduceFunctor> QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> QtConcurrent::mappedReduced(Iterator, Iterator, MapFunctor, ReduceFunctor, QtConcurrent::ReduceOptions) QFuture<typename QtPrivate::ReduceResultType<ReduceFunctor>::ResultType> mappedReduced(Iterator begin, ^ C:/Qt/5.10.0/mingw53_32/include/QtConcurrent/qtconcurrentmap.h:162:74: note: template argument deduction/substitution failed: ../NicksImageProcessor/mainwindow.cpp:79:132: note: deduced conflicting types for parameter 'Iterator' ('QList<linescanData>' and 'linescanIntermediate (*)(const linescanData&)') QFuture<cv::Mat> final = QtConcurrent::mappedReduced(images, &linescanLoadAndPick, &linesToImage, QtConcurrent::UnorderedReduce); ^ Makefile.Debug:609: recipe for target 'debug/mainwindow.o' failed mingw32-make[1]: Leaving directory 'C:/Users/elp14nab/Documents/Qt/build-NicksImageProcessor-Desktop_Qt_5_10_0_MinGW_32bit-Debug' mingw32-make[1]: *** [debug/mainwindow.o] Error 1 Makefile:36: recipe for target 'debug' failed mingw32-make: *** [debug] Error 2

@Rory_1 Update: I have partially solved my problem by resetting permissions on my macbook. diskutil resetUserPermissions / `id -u` The code now works consistently for all applications, including adobe Bridge, except photoshop. I assumed (bad plan) that photoshop accepted command line arguments (and it does in windows) but might not in MacOS. I do not believe the remaining issues are related to QProcess so I am marking this as solved. Thanks to @SGaist, @mpergand and @mrjj for your assistance!

Thx, That's it!!!

Hi, Since Qt 5.7, C++11 being mandatory this CONFIG line is not necessary anymore unless you are targeting older versions of Qt. You can however ask for a more recent version of the standard with c++14 and c++17. Did you setup your cmake project to use c++17 ? If so, how did you do it ? What version of Qt Creator are you using ?

@Allerknappe should your question better suited for AWS support team? or cloud forum? It seems not related to Qt itself. Anyway, from little experience with a (non Qt) REST server running in AWS, in that case the server was configured with "internal" IP and then the AWS security team forwarded the proper port(s) so the solution could be available from outside.

@shwoods said in Alpha channel not written to bmp by QImage::save?: Did you ever get feedback on this? no, since i never asked anyone :) You can ask on the Qt mailing-list if you like.

@sonichy, Just adjust width and radius of slider handle width 11px; radius:5px;

@Piyush Simply connect to the appropriate signals of your table widget: QTableView::doubleClicked(QModelIndex) QTableWIdget::cellDoubleClicked(int row, int column) QTableWidget::itemDoubleClicked(QTableWidgetItem*) And open up a new QTableWidget in the slot: QTableWidget* t = new QTableWidget( parent ); t->setWindowFlags( Qt::Window ); t->setAttribute( Qt::WA_DeleteOnClose ); // initialize table widget t->show();

Yeah, guys! Qt::WA_MacShowFocusRect works. It's awesome! Thank you a lot for your time and help! P.S. Style_tweaks didn't work for me. It called only PE_FrameLineEdit and PE_PanelLineEdit, instead of PE_FrameFocusRect. Maybe I should set on some other flags and settings for that, I don't know...

@linolium said in Forward declaration of QExplicitlySharedDataPointer<T>: So my question is whether it is possible to forward declare a class that uses QExplicitlySharedDataPointer<T> and how? Forward declaration of templated classes: template <class T> QExplicitlySharedDataPointer;

@jsulm : Thanks for your answers. I found the solution. I had a typing error when indicating the LD_LIBRARY_PATH in the Run Environment. I corrected the path for LD_LIBRARY_PATH and now my application is running on the target system.

@ivanicy does it really have to be a composition of labels? Depending on your requirements it would be easier (at least less code) if you just do the painting (on a custom QFrame widget): void MyFrame::paintEvent( QPaintEvnet* event ) { QFrame::paintEvent( event ); QPainter p(this); p.setRenderHints( QPainter::TextAntialiasing | QPainter::Antialiasing ); const int sectionWidth = this->contentsRect().width() / 7; const int sectionHeight = this->contentsRect().height(); // draw color rects p.setBrush( Qt::yellow ); p.drawRect( 0 * sectionWidth , 0 , sectionWidth, sectionHeight ); p.setBrush( Qt::blue ); p.drawRect( 1 * sectionWidth , 0 , sectionWidth, sectionHeight ); p.setBrush( Qt::green ); p.drawRect( 2 * sectionWidth , 0 , sectionWidth, sectionHeight ); ..... // draw text p.setFont( ... ); p.setPen( Qt::white ); p.drawText( this->contentsRect(), Qt::AlignCenter, "LabelText" ); }

Answer at https://stackoverflow.com/a/48491350/1017348. The documentation of QLoggingCategory has a wrong separator character (https://bugreports.qt.io/browse/QTBUG-66050) and is insufficient (https://bugreports.qt.io/browse/QTBUG-66051).

Hi, What error are you getting ?

@Cobra91151 you can use a validator instead of a mask