When using QTreeWidget in a Tab widget, the whole UI will be frozen.

Hi,
When using QTreeWidget in a Tab widget, the whole UI will be frozen. OS is alive, but application is frozen and can not exit.

This is found in Symbian SDK since mcl_201024_hw79, I'm not sure what is the Qt version in this SDK.

For verification, I have wrote a simple test code. This code works on windows xp, but frozen on Symbian (You can test it on N8).

This Qt problem has blocked our tools and it is a critical problem for us. Would you please help us to have a look? Thanks.

Please refer to my test code as below, if QTreeWidget is used, UI freeze, delete QTreeWidget, all will be fine.

Also, a test project is attached, it was wrotten on Qt's Tab Dialog example.

//Tab Statistic

tabStatistic = new QWidget(tabWidget);
tabStatistic->setContextMenuPolicy(Qt::NoContextMenu);
tabWidget->addTab(tabStatistic, tr("Statistics"));

QGridLayout *tabStatisticLayout = new QGridLayout(this);
tabStatisticLayout->setVerticalSpacing(2);
tabStatisticLayout->setHorizontalSpacing(2);
tabStatisticLayout->setSpacing(2);
tabStatisticLayout->setMargin(2);

//treeStatistic has problem, delete tree, it is fine.
//Statistic Tab
treeStatistic11 = new QTreeWidget(tabStatistic);
treeStatistic11->setContextMenuPolicy(Qt::NoContextMenu);
treeStatistic11->headerItem()->setText(0, tr("Statistics12"));

executedItems = new QTreeWidgetItem(treeStatistic11);
executedItems->setText(0, tr("Executed Cases(0)"));
passedItems = new QTreeWidgetItem(treeStatistic11);
passedItems->setText(0, tr("Passed Cases(0)"));
failedItems = new QTreeWidgetItem(treeStatistic11);
failedItems->setText(0, tr("Failed Cases(0)"));
crashedItems = new QTreeWidgetItem(treeStatistic11);
crashedItems->setText(0, tr("Crashed Cases(0)"));
abortedItems = new QTreeWidgetItem(treeStatistic11);
abortedItems->setText(0, tr("Aborted Cases(0)"));

tabStatisticLayout->addWidget(treeStatistic11, 0, 0);
tabStatistic->setLayout(tabStatisticLayout);