如何显示QGraphicsScene？
我有以下代码，但我不确定如何将 QGraphicsScene 添加到我的布局中。
class MainForm(QDialog):
def __init__(self, parent=None):
super(MainForm, self).__init__(parent)
self.scene = QGraphicsScene(self)
self.scene.setSceneRect(0, 0, 500, 500)
self.view = QGraphicsView()
self.view.setRenderHint(QPainter.Antialiasing)
self.view.setScene(self.scene)
self.view.setFocusPolicy(Qt.NoFocus)
zoomSlider = QSlider(Qt.Horizontal)
zoomSlider.setRange(5, 200)
zoomSlider.setValue(100)
self.pauseButton = QPushButton("Pause")
quitButton = QPushButton("Quit")
layout = QVBoxLayout()
layout.addWidget(zoomSlider)
self.setLayout(layout)
self.startTimer(10)
如何让我的 QGraphicsScene 运行？我是 Qt 新手。我是否应该将 QGraphicsScene 添加到布局/
I've got the following code and I'm not sure how to add the QGraphicsScene to my layout..
class MainForm(QDialog):
def __init__(self, parent=None):
super(MainForm, self).__init__(parent)
self.scene = QGraphicsScene(self)
self.scene.setSceneRect(0, 0, 500, 500)
self.view = QGraphicsView()
self.view.setRenderHint(QPainter.Antialiasing)
self.view.setScene(self.scene)
self.view.setFocusPolicy(Qt.NoFocus)
zoomSlider = QSlider(Qt.Horizontal)
zoomSlider.setRange(5, 200)
zoomSlider.setValue(100)
self.pauseButton = QPushButton("Pause")
quitButton = QPushButton("Quit")
layout = QVBoxLayout()
layout.addWidget(zoomSlider)
self.setLayout(layout)
self.startTimer(10)
How can I get my QGraphicsScene running? I'm new to Qt. Am I even supposed to be adding a QGraphicsScene to a layout/
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你必须做这样的事情：
You'll have to do something like this:
您已经添加了要查看的场景，这就足够了。但是您应该将视图添加到 MainForm 和布局中。视图是一种可以由应用程序显示的小部件，而场景不是小部件，不能添加到布局中，它是视图的组件。此外，您可能需要向场景添加一些图形项（例如矩形、图像）并查看其工作原理。
You have added a scene to view, and it's enough. But you should add the view to your MainForm and Layout. View is a kind of widget that can be displayed by your application, while scene is not a widget and cannot be added to layout, it's a component of view. In addition, you may need to add some graphics items(e.g. rectangle, image) to scene and see how it works.