One way to think about it is any object that knows how to display itself on the screen is a QWidget (in particular, some subclass of QWidget). There are some objects like QPicture that represent …

Jul 21, 2010 · A QWidget is the base class for all drawable classes in Qt. Any QWidget -based class can be shown as a window by showing it when it has no parent. A QDialog is based on …

Jun 9, 2015 · I've been having this issue a lot of times. When I modify some properties of a QWidget after the widget.show(), the widget won't update. Most of the time, a mouse click or …

You can also add spacers when you need empty spaces. Extending a QWidget to override the QWidget::sizeHint method does not sound ridiculous to me, as you change the widget …

How to set QWidget width? I know setGeometry(QRect& rect) function to do that, but in that case I should use geometry() function to get former parameters of my QWidget, then I should …

Jul 25, 2013 · QWidget now lives in its own library (QtWidgets); it was necessary to provide the abstraction of a "toplevel window" for non-widgets based applications, and thus QWindow was …

QWidget does not have a clicked () signal, and QMainWindow does not have an exit () slot. It is impossible to connect to an unexisting signal and unexisting slot. The return value of the …

You need to call setAutoFillBackground(True) on the widget. By default, a QWidget doesn't fill its background. For more information, see the documentation for the setAutoFillBackground …

May 29, 2012 · 1) Subclass your QWidget and use a special/own setVisible () replacement method witch turns on/off the painting of the widget (if the widget should be invisible simply …

Jan 21, 2012 · I want to take an action when a widget was resized. Is there a way to catch that without installing an event filter on that widget (and, obviously, without subclassing it)? AFAIK, …