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我想知道像下面這樣的課程,是否需要手動撥打delete mainLayout
?QApplication會在退出()時自動釋放其所有子窗口小部件嗎?
class Dummy : public QWidget {
public:
Dummy() { mainLayout = new QHBoxLayout(); setLayout(mainLayout); }
~Dummy() { delete mainLayout; }
private:
QHBoxLayout *mainLayout;
}
QApplication會自動發佈其所有子窗口小部件嗎?