General and Desktop

@JonB : Yes, it's a mixed app as it relays onto some 3rd party libs that are only available in C#. Not nice, but without alternative for now... @hskoglund : I've been convinced that you were on to something until I learned, that Dispose-Pattern is very useful to free unmanaged resources immediately instead of wating for the garbage collector. But there is no way in C# for an object to destroy itself and free the used memory leaving nothing but a dangling pointer behind... I dug a little deeper into the topic and it seems, that this isn't Qt related. I tried the same, using only standard C++ and the ComBaseApi (combaseapi.h), and got pretty much to the same result. The COM objects reference count actually drops to zero as it is supposed. Here I learned tha when creating a COM object a Runtime Callable Wrapper (RCW) is created to own the object and hold a strong reference to it which could possibly prevent tha GC from doing it's job. I guess I will have a closer look on that...

@JonB Hi, sorry for the late reply. extacly, i already have signal parameter, only want to write generic mathod - which has its own inbuilt signal-side parameters for connect() but accepts the slot-side as parameters.

@bsomervi Tools->Options->Kits->Add

As Bob64 said, setSizeHint(const QSize &) is the way to define a widget's preferred size. A widget's runtime size is also depends the widget's size policy. If the widget is held by a layout, the layout type and (if existing) other widgets and their sizes are also considered. This is why setting a size hint does not necessarily lead to predictable column sizes of your list view. In case you want that, you can set the column sizes directly by setColumnWidth(int column, int width). A user-friendly way to remember widget sizes for the next session is to store them in a QSettings object, which you read in your constructor and update in your destructor.

I have the same problem too. try adding QTabBar { qproperty-drawBase: 0; } btw, if DockWidgets will be dragged, look this: topic/59450

@Publicnamer Use a delegate: class Delegate: public QStyledItemDelegate{ public: using QStyledItemDelegate::QStyledItemDelegate; void setEditorData(QWidget *editor, const QModelIndex &index) const{ if(QLineEdit *lineEdit = qobject_cast<QLineEdit *>(editor)){ lineEdit->setText("Foo"); } } }; tableWidget->setItemDelegate(new Delegate);

Because there's no reason to have anything pre-built in the sources. I was thinking about the binaries installed using the online installer.

@mpergand It worked for me. I did this: void home::on_AddPeopleBut_clicked() { addpeople dialog(this); dialog.exec(); QStringList a; a=dialog.getList(); qDebug() << a[0]; } I printed the first element to test . it worked perfectly. Thanks!!

@JonB Thank you so much. I didn't know about whatsThis() :)

@n-2204 said in How to add validation in column data in Qtableview?: so this will show () braces for all the data I mean not only -ve data in column That's exactly what this code does. I'd direct your attention on the if(value<T(0)) condition

Creation time is the "old" time, modification time is the "new" time. In the Explorer, the "old" time is displayed. A new aspect: this only seems to affect Windows 7, not Windows 10.

Hi, thank you very much for the hint! Works great! [image: c4662aa0-2272-4225-8215-33ec0ac6b33e.png] The elements where I manually change font continue to work as before. ... and the elements, I don't want to use bother with font size use the new application font. Great! Thanks again - that's exactly what I was looking for :)

@walle19 said in should QPushButton added to a QMessageBox be freed from memory?: Or maybe they are freed after the QMessageBox is deleted because adding them to the QMessageBox define them as children of the QMessageBox? Bingo! if they are sub-widgets then they are child and will be deleted with the parent

My situation change, after many help and manipulation, my map change ! The map is not black but, is white ! [Edit] it's work ! After many help and research i fixe my probleme ! En effect, i add the line : qputenv("QT_OPENGL", "angle"); QCoreApplication::setAttribute(Qt::AA_UseOpenGLES,true); and i add many depedency ".dll" on my repertory. After this, my application work's Thank's for your help !

@raven-worx said in Compilation Problem with Qt 5.14.2: deploy with QtCreator to your phone and check the output messages Hello, Thanks for your feedback, but even with the logs I can't find the error. I can put you the logs I get from the application output with the command 'adb logcat'. Thanks [image: f4155279-9ec0-4f96-b6e1-b6e878440828.PNG] [image: 5585624c-f20e-4bcc-916e-f06416a12c24.PNG] [image: 08ba0c94-6b17-41cd-9e67-81d7ad59f6de.PNG] [image: 1aed6bc7-a60e-4ddc-8a71-f50bf37228ef.PNG]

@jsulm , sorry, no idea, however, having removed that, now its fine, thank you.

@jsulm sorry i added that part its working thank you for your time and solution

@jsulm Hi; Your reply is appreciated! This code gave the SSIDs of all APs which are connected in future with the PC. If one time it stores the list then it does not update the new active wireless in the surrounding after saving in the TreeWidget why? After scanning these SSIDs is it possible to find MACs corresponding these SSIDs collected. Kindly help me regarding this. Thanks in advance!