if you want completelly create one stand alone executable, you can try PyInstaller . i feel it’s better to create one stand alone executable than cx_freeze or py2exe (in my experience). and easy to use (full documentation available in the site). It supports Python 3.6 or newer. Pass the –onefile argument if you want to … Read more
qmake-qt5 –version or qmake –version
I had the same problem: I have a game app whose main window class inherits QMainWindow. Its constructor looks partly like this: m_scene = new QGraphicsScene; m_scene->setBackgroundBrush( Qt::black ); … m_view = new QGraphicsView( m_scene ); … setCentralWidget( m_view ); When I want to display a level of the game, I instantiate a QGridLayout, into … Read more
Use QObject::sender() in the slot, like in the following Example: void MainWindow::someSetupFunction( void ) { … connect( _foobarButton, SIGNAL(clicked()), this, SLOT(buttonPressedSlot()) ); } void MainWindow::buttonPressedSlot() { // e.g. check with member variable _foobarButton QObject* obj = sender(); if( obj == _foobarButton ) { … } // e.g. casting to the class you know its connected … Read more
About the only thing I can think of to add is to further state that QObjects have an affinity with a single thread. This is usually the thread that creates the QObject. So if you create a QObject in the app’s main thread and want to use it in another thread, you need to use … Read more
Insert into the QTableWidget following kind of items: QTableWidgetItem *item = new QTableWidgetItem(); item->setFlags(Qt::ItemIsSelectable|Qt::ItemIsEnabled); Works fine! EDIT: QTableWidgetItem *item = new QTableWidgetItem(); item->setFlags(item->flags() ^ Qt::ItemIsEditable); This is a better solution. Thanks to @priomsrb.
Layouts are actually easy to understand “I think”. 🙂 A simple explanation of layouts can be found in the QT book “C++ Gui programming with QT 2nd edition“ What you should be aware of regarding layouts and their size policies Most Qt widgets have a size policy. This size policy tells the system how the … Read more
In order to change the label size you can select an appropriate size policy for the label like expanding or minimum expanding. You can scale the pixmap by keeping its aspect ratio every time it changes: QPixmap p; // load pixmap // get label dimensions int w = label->width(); int h = label->height(); // set … Read more
// remove question mark from the title bar setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
In Designer, activate the centralWidget and assign a layout, e.g. horizontal or vertical layout. Then your QFormLayout will automatically resize. Always make sure, that all widgets have a layout! Otherwise, automatic resizing will break with that widget! See also Controls insist on being too large, and won’t resize, in QtDesigner