QTreeWidgetItem* item = new QTreeWidgetItem(); item->setText(0, "Item 1");
QTreeWidgetItem* item = new QTreeWidgetItem(); item->setText(0, "Column 1"); item->setText(1, "Column 2"); item->setText(2, "Column 3");Brief Description: The first example demonstrates how to create a new tree widget item and set its text for a single column. The second example shows how to set the text for multiple columns in a tree widget item. Package Library: The QTreeWidgetItem class is part of the Qt GUI library. Therefore, to use the class and its functions, the Qt library must be installed on the system and linked in the C++ project code.