How do I delete a PyQt widget?

How do I delete a PyQt widget?

deleteLater() method allows us to explicitly delete the reference of the widget.

1. Syntax : widget.deleteLater()
2. Argument : It takes no argument.
3. Action performed : It deletes/remove the reference of the widget from the memory.

How do I delete all widgets?

Tap and hold on a widget to reveal the options. Here, select the “Remove Widget” button. If you’re in the Home screen editing mode, tap the “-” icon from the top-left corner of a widget. From there, choose the “Remove” option to delete the widget from your Home screen.

How do I hide widgets in Qt?

Re: How to do auto show/hide a widget in Qt

1. // This is mainWidget, where in I’ll show the menu.
2. #include “cmainwidget.h”
3. CMainWidget::CMainWidget(QWidget *parent)
4. : QWidget(parent)
5. this->setMouseTracking(true);
6. this->setFixedSize(650, 400);
7. menuWidget = new CMenuWidget(this);
8. menuWidget->hide();

What is QVBoxLayout?

QVBoxLayout is a convenience class for a box layout with vertical orientation. In general, the QBoxLayout class takes the space it gets (from its parent layout or from the parent widget), divides it up into a series of boxes, and makes each managed widget fill one box.

How do you remove a widget in qgridlayout?

If you do this, QGridLayout will guess how to distribute the size over the columns/rows (based on the stretch factors). To remove a widget from a layout, call removeWidget (). Calling QWidget::hide () on a widget also effectively removes the widget from the layout until QWidget::show () is called.

How do you remove a widget from a PyQt layout?

To remove a widget from a layout, call removeWidget (). Calling QWidget.hide () on a widget also effectively removes the widget from the layout until QWidget.show () is called. removeWidget is inherited from QLayout, that’s why it’s not listed among the QGridLayout methods.

What happens when you empty a layout in PyQt?

The answer from PALEN works well if you do not need to put new widgets to your layout. But you will get a “Segmentation fault (core dumped)” at some point if you empty and fill the layout many times or with many widgets. It seems that the layout keeps a list of widget and that this list is limited in size.

How does the qgridlayout function work in Python?

QGridLayout takes the space made available to it (by its parent layout or by the parentWidget () ), divides it up into rows and columns, and puts each widget it manages into the correct cell. Columns and rows behave identically; we will discuss columns, but there are equivalent functions for rows.