今天在Qt里使用树控件的时候，绑定自定义节点取数据会报以下错误：
Type is not registered, please use the Q_DECLARE_METATYPE macro to make it known to Qt's meta-object system
用以下方法解决：
Q_DECLARE_METATYPE(你的自定义数据类名)
即可。
今天在Qt里使用树控件的时候，绑定自定义节点取数据会报以下错误：
Type is not registered, please use the Q_DECLARE_METATYPE macro to make it known to Qt's meta-object system
用以下方法解决：
Q_DECLARE_METATYPE(你的自定义数据类名)
即可。
今天在Qt里使用树控件的时候，绑定自定义节点取数据会报以下错误： 用以下方法解决： 即可。
error: C2338: Type is not registered, please use the Q_DE...
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