本文介绍了C ++中的VTable何时创建？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想知道何时创建vtable？
是在main（）之前的启动代码中还是在其他时间？
I would like to know when is a vtable created?Whether its in the startup code before main() or is it at some other point of time??
推荐答案
vtable 不是C ++概念，因此是否使用它们以及何时使用它们将取决于实现。
A vtable isn't a C++ concept so if they are used and when they are created if they are used will depend on the implementation.
通常， vtables 是在编译时创建的结构（因为它们可以在编译时确定）。在运行时创建特定类型的对象时，它们将具有一个 vptr ，它将在构造时初始化为指向静态 vtable 。
Typically, vtables are structures created at compile time (because they can be determined at compile time). When objects of a particular type are created at runtime they will have a vptr which will be initialized to point at a static vtable at construction time.
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