qDebug()<<"%%%%%%%%%%%%%%%%%%%"<<" "<<this->mainLayout->count(); while(mainLayout->count()) { QWidget *p=this->mainLayout->itemAt(0)->widget(); p->setParent (NULL); this->mainLayout->removeWidget(p); delete p; } qDebug()<<"################"<<" "<<this->mainLayout->count();
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原文:http://luoqiu.blog.51cto.com/2198651/1702493