How do I highlight specific letters in the text of a QListWidgetItem?

Question

I am writing a search algorithm that searches a QListWidget and returns relevant matches based on what the user types in the search bar. I would like any matches to be highlighted in a yellowish color.

For example:

If the user types "ilt" into the search bar, I would like to highlight the corresponding letters that are in the QListWidgetItem with the text "Write F ilt er" (bolded, for convenience).

Assuming that I have access to both phrases and can programmatically identify which letters in the QListWidgetItem text that I need to highlight, is there an API or algorithm that I can use to do this?

Answer 1

Usually you have to create a custom delegate that paints the text the way you want. You can read about it here .

But if you want to customize a QListWidget you can simply use the QListWidget::setItemWidget method:

QListWidget *list = new QListWidget;

QListWidgetItem *item = new QListWidgetItem(list);

QLabel *label = new QLabel("my <span style=\"color: red\">red</span> text");
list->setItemWidget(item, label);