[英]Center children widget in parent widget(parent widget was added in layout)
您可以通過設置子窗口小部件的固定大小並將其放置在父窗口小部件的網格布局中來執行此操作。
QGridLayout *layout = new QGridLayout();
QWidget *parentWidget = new QWidget();
layout->addWidget(parentWidget );
QWidget *childWidget = new QWidget(parentWidget);
QGridLayout *parentLayout = new QGridLayout();
parentWidget->setLayout(parentLayout);
parentLayout->addWidget(childWidget);
childWidget->setFixedSize(/*some fixed size for child widget*/);
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