本文详细介绍了Unity中OnOpenAsset属性的使用方法及注意事项。该属性可用于定义当通过双击项目浏览器中的资源文件来打开资源时所触发的回调函数。文章还解释了如何通过静态方法实现这一功能，并说明了方法返回值的作用。
Description
Callback attribute for opening an asset in Unity (e.g the callback is fired when double clicking an asset in the Project Browser).
Adding this attribute to a static method will make the method be called when Unity is about to open an asset. The method should have the following signature:
static bool OnOpenAsset(int instanceID, int line)
Return true if you handled the opening of the asset or false if an external tool should open it.
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