Qt: QListWidget separator line after particuler items?
qlistwidget, qt
Solution
Create a `QListWidgetItem` representing the separator. Such item would need to have defined the `setSizeHint()`, so its height is small, and also the `setFlags()` should define `Qt::NoItemFlags`, so the item is not selectable, etc. Then, after adding the item to the `QListWidget`, place a `QFrame`, with its shape set to `QFrame::HLine`, as the item's widget (using `QListWidget::setItemWidget()`).
As for your additional question from the comment, which is:
I want to add some gap on each sides of this separator line/frame. How can I achieve this?
The only solution that comes to my mind right now is to embed the `QFrame` inside of another `QWidget` and put the `QWidget` as item's widget (remember that you need to add a layout manager to the `QWidget` in order to embed anything in it). Then set proper margins on the widget: `QWidget::setContentsMargins(int left, int top, int right, int bottom)`
Problem
This is related to Qt: QListWidget separator line between items? But this above answer adds separator line after each items, I would like to know a way to add the separator line after particular items.