Can I store some user data in every item of a QListWidget?
I want to store some filenames in a QListWidget. I need to have the full file paths, but I only want to show the base filename. I probably could store the full 开发者_运维技巧filename in the tooltip for each item, but I'd rather not have tooltips for the list items.
You can set data for and get data from each QListWidgetItem. See QListWidgetItem::setData() and QListWidgetItem::data(). Data can be set for different roles. Use Qt::UserRole, which is "The first role that can be used for application-specific purposes."
Try something like this:
QListWidgetItem *newItem = new QListWidgetItem;
QString fullFilePath("/home/username/file");
QVariant fullFilePathData(fullFilePath);
newItem->setData(Qt::UserRole, fullFilePathData);
newItem->setText(itemText);
listWidget->insertItem(row, newItem);
and:
QListWidgeItem* currentItem = listWidget->currentItem();
if (currentItem != 0) {
QVariant data = currentItem->data(Qt::UserRole);
QString fullFilePath = data.toString();
}
Here is how it looks like in Python (PyQt5):
from PyQt5 import QtCore, QtWidgets
# Creates a QListWidgetItem
item_to_add = QtWidgets.QListWidgetItem()
# Setting your QListWidgetItem Text
item_to_add.setText('String to Display')
# Setting your QListWidgetItem Data
item_to_add.setData(QtCore.Qt.UserRole, YOUR_DATA)
# Add the new rule to the QListWidget
YOUR_QListWidget.addItem(item_to_add)
Retrieving the data:
# Looping through items
for item_index in range(YOUR_QListWidget.count()):
# Getting the data embedded in each item from the listWidget
item_data = YOUR_QListWidget.item(item_index).data(QtCore.Qt.UserRole)
# Getting the datatext of each item from the listWidget
item_text = YOUR_QListWidget.item(item_index).text()
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