1     //獲取選擇的目錄路徑
 2     QString selectedDir=QFileDialog::getExistingDirectory(this,"選擇一個目錄","/",QFileDialog::ShowDirsOnly);
 3     //若目錄路徑不為空
 4     if (!selectedDir.isEmpty())
 5     {
 6         //將路徑中的斜杠替換為反斜杠
 7         selectedDir = selectedDir.replace(QRegExp("\\"), "/");
 8         //顯示選擇的目錄路徑
 9         ui->savePath->setText(selectedDir);
10         m_savePath = ui->savePath->text();
11     }