Mine

void lectures::on_table_lectures_cellDoubleClicked(int row, int column){	QString start,dat;	dat=dir_lectures;	dat+="/";	dat+=ui->articles->currentItem()->text();	dat+="/";	dat+=ui->table_lectures->item(row,0)->text();	dat+=ui->table_lectures->item(row,1)->text();	QProcess *proc=new QProcess;	start="libreoffice ";	start+=dat;	proc->start(start);}