访问Windows句柄 [英] Accessing Windows handle

问题描述

我在一个类中声明了一个事件句柄对象。我需要在另一个类中访问该句柄。

I have an event handle object declared in one class. I need that handle to be accessible in another class.

class A
{

private:
HANDLE m_hEvent;

void DoSomthing()
{
...
...
SetEvent(m_eEvent);
}
}


class B
{

  void Do()
{
 Initialize  the handle and wait for the event to set
}
}

是否可以声明他处理第二类的朋友并使用它？使用这样的手柄是一个好的设计吗？因为我有这样的场景。还有其他方法吗？

Is it OK to declare he handle a friend of the second class and use it? Is it a good design to use handles like this? Because I have such a a scenario .Is there any other method?

推荐答案

[...]还有其他方法吗？

[...] Is there any other method?

我认为您也可以在两个类中调用 CreateEvent ，通过
lpName 参数。 （参见 OpenEvent ）。如果
A 和 B 处于不同的流程中，这也是合适的。

I think that you can also call CreateEvent in both of the classes, specifying the same name via lpName parameter. (See OpenEvent too). This is also suitable if A and B are in different processes.

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