void MainWindow::show_contextmenu(const QPoint &pos)
{
m_currentItem = ui->treeWidget->itemAt(pos);
if( m_currentItem == 0)
return;
QMenu *cmenu = new QMenu(ui->treeWidget);
QAction *deleAction = cmenu->addAction("Delete");
QAction *openAction = cmenu->addAction("Open");
if(m_currentItem->parent() == 0)
{
QAction *inviteAction = cmenu->addAction("Invide");
connect(inviteAction, SIGNAL(triggered(bool)), this, SLOT(onInvide()));
}
connect(deleAction, SIGNAL(triggered(bool)), this, SLOT(onDele()));
connect(openAction, SIGNAL(triggered(bool)), this, SLOT(onOpen()));
cmenu->exec(QCursor::pos());
}
//在树形结点上，右键菜单删除 需要操作数据库
void MainWindow::onDele()
{
//删除的是问卷结点
if(m_currentItem->parent() == 0)
{
int i = ui->treeWidget->indexOfTopLevelItem(m_currentItem);
m_currentItem->takeChildren();
ui->treeWidget->takeTopLevelItem(i);
}
else//删除用户结点
{
m_currentItem->parent()->removeChild(m_currentItem);
}
//数据库操作
}