QItemDelegate displays different strings representing boolean values depending on whether or not the item is being edited.

When editing the boolean value, a QComboBox is used as the editor, which contains "False" and "True" as the entries. These strings are also set up for translation, so they will display as "Falsch" and "Wahr" if a German translation is used.

However, when not in editing mode, the string representations are retrieved from QVariant, which returns lower-case "false" and "true" for the two boolean values.

Items containing boolean values should display the same string representation of the value whether or not the item is being edited.