标签：foreach window ast win object_c level widget ptr color
MainWidget* mainWindow = nullptr; foreach (QWidget *w, qApp->topLevelWidgets()){ if (MainWidget* mainWidget = qobject_cast<MainWidget*>(w)) mainWindow = mainWidget; }
标签：foreach window ast win object_c level widget ptr color
原文地址：https://www.cnblogs.com/azbane/p/12119380.html
