QTreeWidget: Accessing QPushButton Widget in a Specific Column

This\u0020code\u0020is\u0020trying\u0020to\u0020cast\u0020the\u0020widget\u0020of\u0020the\u0020item\u0020in\u0020column\u00204\u0020of\u0020a\u0020QTreeWidget\u0020to\u0020a\u0020QPushButton\u0020pointer.\n\nHere's\u0020a\u0020breakdown\u0020of\u0020the\u0020code:\n\n- treewgt:\u0020This\u0020is\u0020a\u0020pointer\u0020to\u0020a\u0020QTreeWidget\u0020object.\n- treewgt->currentItem():\u0020This\u0020returns\u0020a\u0020pointer\u0020to\u0020the\u0020currently\u0020selected\u0020item\u0020in\u0020the\u0020QTreeWidget.\n- treewgt->itemWidget(treewgt->currentItem(), 4):\u0020This\u0020returns\u0020a\u0020pointer\u0020to\u0020the\u0020widget\u0020associated\u0020with\u0020the\u0020item\u0020in\u0020column\u00204\u0020of\u0020the\u0020QTreeWidget.\n- qobject_cast<QPushButton*>(...):\u0020This\u0020is\u0020a\u0020dynamic\u0020cast\u0020that\u0020attempts\u0020to\u0020convert\u0020the\u0020widget\u0020pointer\u0020to\u0020a\u0020QPushButton\u0020pointer.\u0020If\u0020the\u0020cast\u0020is\u0020successful,\u0020it\u0020returns\u0020a\u0020pointer\u0020to\u0020the\u0020QPushButton\u0020object.\u0020If\u0020the\u0020cast\u0020fails,\u0020it\u0020returns\u0020nullptr.\n\nSo,\u0020the\u0020code\u0020is\u0020essentially\u0020trying\u0020to\u0020get\u0020the\u0020QPushButton\u0020widget\u0020associated\u0020with\u0020the\u0020item\u0020in\u0020column\u00204\u0020of\u0020the\u0020QTreeWidget,\u0020and\u0020store\u0020it\u0020in\u0020a\u0020QPushButton\u0020pointer\u0020named\u0020"col".