qt对象树析构详细顺序

#include "mainwindow.h" #include "a.h" #include "c.h" #include "qdebug.h" #include "ui_mainwindow.h" #include "b.h" #include "formc.h" #include <QTimer> MainWindow* pMainWindow = nullptr; extern A* aGlobal; MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow) { pMainWindow = this; ui->setupUi(this); setObjectName("MainWindow"); // c = new C(this); fc = new FormC(this); fc->show(); } MainWindow::~MainWindow() { delete ui; qDebug()<<"~MainWindow"; } void MainWindow::on_pushButton_clicked() { // delete c; // c->deleteLater(); delete fc; // fc->deleteLater(); // delete aGlobal; } void MainWindow::on_pushButtonInit_clicked() { }