在作为函数参数的句柄上调用 CloseHandle? [英] Call CloseHandle on handle that is a function parameter?

问题描述

如果一个句柄是作为函数参数创建的，函数结束时它会自己关闭吗?

If a handle is created as a function parameter, will it close itself when the function ends?

例如:

int readMem(HANDLE processHandle, int address)
{
    int memValue = 0;

    bool success = ReadProcessMemory(processHandle, (LPVOID)address, &memValue, sizeToReadBytes, NULL);
    if (!success)
        std::wcout << "Memory read failed on address: " << std::hex << address << "\n";

    return memValue;
}

我是否需要在 return 语句之前显式关闭它，还是最好尽可能将它们作为引用传递?

Do I need to explicitly close it before the return statement or is it best to just pass them as references whenever possible?

或者我只是误解了 Handles 的全部内容?我对 winapi 很陌生.

Or am I just misunderstanding Handles all together? I am quite new to the winapi.

推荐答案

a HANDLE 只是一个 typedef 到一个 void *.

a HANDLE is a just a typedef to a void *.

Microsoft 明确规定，当您使用完句柄后，请务必使用 CloseHandle 将其关闭.

Microsoft clearly specifies that when you are finished with the handle, be sure to close it using CloseHandle.

您的 readMem 函数没有创建句柄，因此在那里关闭它没有意义.

Your readMem function didn't create the handle, therefore it doesn't makes sense to close it there.

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