QT中的Q_PROPERTY？ [英] Q_PROPERTY in Qt?

问题描述

我无法真正弄清楚为什么我需要它，请阅读：
http://doc.qt.io/qt-4.8/properties.html#requirements-for-declaring-properties

I cant really figure out why do I need it, Been reading: http://doc.qt.io/qt-4.8/properties.html#requirements-for-declaring-properties

仍然不能真正理解它的使用。
任何种类的帮助将是巨大的！

still cant really understand the use of it. any kind of help would be great!

推荐答案

阅读 Qt属性系统，这就像一个通常的类方法，但它可以与Qt的元对象系统一起使用：

Read about the Qt Property System , this is just like a usual class method but it can be used with Qt's meta-object system:

 QPushButton *button = new QPushButton;
 QObject *object = button;

 button->setDown(true);
 object->setProperty("down", true);

这些属性也将在Qt Designer下可见，因此您可以创建一个自定义窗口部件，请在Qt Designer中进行关联，请参阅本文详情。

Also these properties will be visible under Qt Designer too so you could create a custom widget with some properties and hook it up in Qt Designer, see this article for details.

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