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void Panel::on_userListWidget_itemDoubleClicked(QListWidgetItem* item)
{
QString nameStr = ui->userListWidget->currentItem()->text();
nameStr.replace("\n","");
QString tempstr(nameStr);
chatForm *c = chatFormHash.value(nameStr);
if(c == 0)
{
c = new chatForm(this->id,this->ip,this->port,udpSocket);
c->setWindowTitle("chatting with " + nameStr + ".");
chatFormHash.insert(nameStr,c);
}
c->show();
}