qwidget

i'm having difficulties implementing custom widget rendering in a QListView . I currently have a QListView displaying my custom model called PlayQueue based on QAbstractListModel . This is working fine with simple text, but now I would like to display a custom widget for each element. So I subclassed a QStyledItemDelegate to implement the paint method like this: void QueueableDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const { if (option.state & QStyle::State_Selected) painter->fillRect(option.rect, option.palette.highlight()); QWidget

I'm creating a new widget, by subclassing the QWidget class. I'd like to be able to set a ratio (for its height and its width) for this widget, which will always be maintained. For this, I've always searched, using the Qt5 documentation, Google, and Stackoverflow. Obviously, I've found answers: in particular, this one . But, unfortunately, not even one is fully effective: Setting the sizeIncrement does totally nothing, even if the widget is a window I tried to overload resizeEvent, but I really don't know how to do this... If I follow this answer , two things: If the widget is a top-level

I have QSystemTrayIcon with QAction that opens new window of type QWebView. When the window loses focus and I select the QAction again, the window should regain focus. It does on Linux, but doesn't on Mac OS X. The problem is, that when I have another window open and active, let's say Google Chrome, when I call show() on the window I'm trying to open, it always gets opened under the Google Chrome, so I don't see it. The same goes for focusing, when I have multiple windows open, and my QWebView might be the last one in the order, when I click the QAction to focus the window, it will always be

I am using the constructor QWidget(QWidget *parent) . This parent widget contains a lot of child widgets. I need to clear all the child widgets from the parent at runtime. How can I do this? You can use the following in your parent widget class: QList<QWidget *> widgets = findChildren<QWidget *>(); foreach(QWidget * widget, widgets) { delete widget; } galinette Previous answer is wrong!! You cannot use findChildren to delete a widget's children, because Qt4's findChildren recursively lists children. Therefore, you will delete children of children, which then may be deleted twice, potentially