我正在使用 QtDataVisualization 来设置单点的 3d 图。 到目前为止,按照 Qt 示例中记录的方式使用相应的 Q3DScatter:
QGuiApplication app(argc, argv);
Q3DScatter scatter;
scatter.setFlags(scatter.flags() ^ Qt::FramelessWindowHint);
QScatter3DSeries *series = new QScatter3DSeries;
QScatterDataArray data;
data << QVector3D(0.5f, 0.5f, 0.5f) << QVector3D(-0.3f, -0.5f, -0.4f) << QVector3D(0.0f, -0.3f, 0.2f);
series->dataProxy()->addItems(data);
scatter.addSeries(series);
scatter.show();
return app.exec();
当我通过围绕该图包装 QWidget 对其进行修改时,该图未显示。该小部件显示为空(灰色)。
QGuiApplication app(argc, argv);
Q3DScatter scatter;
scatter.setFlags(scatter.flags() ^ Qt::FramelessWindowHint);
QWidget *container = QWidget::createWindowContainer(scatter);
QSize screenSize = scatter->screen()->size();
container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.5));
container->setMaximumSize(screenSize);
container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
container->setFocusPolicy(Qt::StrongFocus);
QScatter3DSeries *series = new QScatter3DSeries;
QScatterDataArray data;
data << QVector3D(0.5f, 0.5f, 0.5f) << QVector3D(-0.3f, -0.5f, -0.4f) << QVector3D(0.0f, -0.3f, 0.2f);
series->dataProxy()->addItems(data);
scatter.addSeries(series);
container->show();
return app.exec();
我的代码有问题吗?
最佳答案
来自 QGuiApplication ,“对于基于 QWidget 的 Qt 应用程序,请改用 QApplication,因为它提供了创建 QWidget 实例所需的一些功能”。然后可以进行以下操作:
// QGuiApplication app(argc, argv);
QApplication app(argc, argv);
QMainWindow w;
Q3DScatter scatter;
scatter.setFlags(scatter.flags() ^ Qt::FramelessWindowHint);
QWidget *container = QWidget::createWindowContainer(&scatter);
w.setCentralWidget(container);
QSize screenSize = scatter.screen()->size();
container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.5));
container->setMaximumSize(screenSize);
container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
container->setFocusPolicy(Qt::StrongFocus);
QScatter3DSeries *series = new QScatter3DSeries;
QScatterDataArray data;
data << QVector3D(0.5f, 0.5f, 0.5f) << QVector3D(-0.3f, -0.5f, -0.4f) << QVector3D(0.0f, -0.3f, 0.2f);
series->dataProxy()->addItems(data);
scatter.addSeries(series);
// container->show();
w.show();
return app.exec();
关于c++ - Q3DScatter 没有出现在 QWidget 中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54197961/