General and Desktop

@Dragoon yes... it was... using a precompiled QtCreator binary found here the plugin works. Nope it was not... the problem was the path of plugins directory. As QtCreator config file states the folder in which it search for plugins is the plugins\bin\designer subfolder of the QtCreator tool directory i.e. (in standard Windows installs): C:\Qt\Tools\QtCreator\bin\plugins\designer And not (as make install script like to think): C:\Qt\<release>\<toolchain>\plugins\designer BTW on Windows the plugin must be compiled as Release otherwise QtCreator will not load it but you will have an explanation on the: Tools->Form Editor->About Qt Designer Plugins dialog.

@jorTry85 said in C2102: '&' requires I-Value: When i now try to comile it in QT Qt is not a compiler. You seem to be using MSVC compiler. That is where you you should be looking. I suggest you Google for C2102 and read e.g. the stackoverflow posts. It looks like you either change the compiler options ("disabling /permissive-") or better actually "fix". I believe it is telling you that those functions return a "temporary" object, so you shouldn't take its address, you should rather assign to a local variable and use that, or pass a const reference?

I was looking for bool MyBaseClass::event(QEvent* e) { if (e->type() == QEvent::DynamicPropertyChange && qobject_cast<QDockWidget*>(parent())) //... }

@SGaist, I faced the same problem on Ubuntu 20.04. I have Qt5 and Qt6 installed, in both versions toolTips are not displayed. However, in Windows 10 everything works without problems. Windows 10: [image: 1e3bfadc-2a1a-475d-be1a-dc214a2a252a.png] Ubuntu 20.04 [image: d589b262-f452-4fd5-9e36-6a55b7d550e4.png]

@agmar C++ basics. What you wrote is not valid C++. A style-sheet is a string... And you also need to use https://doc.qt.io/qt-6/qwidget.html#styleSheet-prop if you want to set style-sheet in code.

@masa4 said in Proper way for adding 2nd language: But how will i change dynamically created widget's texts like this messagebox? Since you can't show a MessageBox and change the language simulatneously this shouldn't be a problem since the next time you call the message box you text is properly translated due to the tr() call. If you changed a text in your ui after setupUi() you have to do the same manually after the language change event. See the documentation.

@wuj10n When adding QListWidgetItem to QListWidget, update QListWidgetItem flag like this listeWidgetItem.setFlags(listWidgetItem.flags() & (~Qt.ItemIsSelectable))

@Christian-Ehrlicher forget it I was editing the reply...

@stryga42 Thank you for your reply, what I want to do is on the Mac system, when I switch the desktop space, let the window switch with it and display it on the top layer forever. What I did try is as follows: // in .mm file, My own widget is subclass of QWidget NSPanel *window = [[NSPanel alloc] initWithContentRect:NSMakeRect(0, 0, size.width(), size.height()) styleMask:NSWindowStyleMaskFullSizeContentView | NSWindowStyleMaskBorderless | NSWindowStyleMaskNonactivatingPanel backing:NSBackingStoreBuffered defer:YES]; [window setHasShadow:false]; [window setHidesOnDeactivate:false]; [window setBackgroundColor:NSColor.clearColor]; [window setTitlebarAppearsTransparent:true]; [window setTitleVisibility:NSWindowTitleHidden]; [window setFloatingPanel:true]; [window setLevel:NSScreenSaverWindowLevel - zPosition]; [window setCollectionBehavior:NSWindowCollectionBehaviorCanJoinAllSpaces | NSWindowCollectionBehaviorFullScreenAuxiliary]; NSView *nativeWidgetView = (NSView*)(this->winId()); window.contentView = nativeWidgetView; This approach achieved my purpose, but it also caused a series of event distribution problems, such as not receiving QEvent::Enter...I don't know what to do and if there is any other way to do it?

@JonB Got it, let me try that. Thank you!

@Dummie1138 Good on the backslashes, but no you are going too far. The attempt you had is actually close. It would need to be "^\\S*$" But if that doesn't work the link I referenced says QRegExpValidator already assumes ^...$ around your expression, i.e. complete match. So your ^/$ may be being taken literally. Try just "\\S*" ?

@jsulm said in Scroll a pdf document in QPdfView: @Faust-Faust Since it inherits https://doc.qt.io/qt-6/qabstractscrollarea.html it is possible I knew, but he didn't give me the method. QScrollBar *scrol = view->verticalScrollBar(); scrol->setSliderPosition(scrol->sliderPosition() + 100); Thank you.

@stryga42 Ubuntu 22.04.2 LTS with the standard wayland WM. I am dragging within my app (I drag a treeItem from its location to another in the same treeview). The code itself is very basic and it works as expected on windows void ProjectWidget::dragMoveEvent(QDragMoveEvent * event) { QTreeWidgetItem* currentItem = itemAt(event->position().toPoint()); if (currentItem == NULL) { event->ignore(); return; } if (latestDraggedItem == NULL) { event->ignore(); return; } QVariant v = latestDraggedItem->data(0,Qt::UserRole); if (v.value<ModelTemplate *>()) { if (currentItem == cardNode) { event->setDropAction(Qt::MoveAction); event->accept(); return; } } event->ignore(); }

@UmeyrMSekban Usually I use only a standard connection string, try with this //Driver={SQL Server Native Client 11.0};Server=myServerAddress;Database=myDataBase;Uid=myUsername;Pwd=myPassword; m_database = QSqlDatabase::addDatabase("QODBC", connectionName); QString dns = QString("Driver={SQL Server Native Client 11.0};Server=%1;Database=%4;Uid=%2;Pwd=%3;") .arg(m_host,m_userName,m_password, m_nameDB); qDebug() << "ODBC connection string" << dns << "driver"; m_database.setDatabaseName(dns); stato = m_database.open(); if(!stato){ qCritical() << m_database.lastError().text() << QSqlDatabase::drivers(); }

@jorTry85 As @SGaist wrote: you need to use Microsoft compiler, not MinGW.

@Chris-Kawa Thanks for the pointer to the code. I'm new to Qt and still finding my way around.

@manykim said in Can I create a so file for CMAKE Project, using QT?: I do not reckon where i did wrong... Did the linker even find your my_hello library? Post the link related commands and output executed by the Makefile that CMake generated for you. make VERBOSE=1