directX directInput键盘抛出E_accessdenied [英] directX directInput Keyboard throws E_accessdenied

问题描述

我正在尝试使用DirectInput键盘，并且我的代码抛出了一个奇怪的错误。
我可以经历所有的创建，设置，它们都返回S_OK，但是当我尝试运行时

I am trying to work with DirectInput keyboard, and my code is throwing a weird error. I can go through the creation, and setting of everything and they all return S_OK, but when I try to run

HRESULT hr;
hr = m_pDIKeyboard->GetDeviceState( sizeof(keyBuffer), (LPVOID)&keyBuffer );

hr返回（十六进制地址）访问代码无效，并且在我进行检查时

hr comes back as (hex address) "access code is invalid", and when I do a check for

if(FAILED(hr))

它以E_ACCESSDENIED
的形式返回，在keyBuffer或该行的任何部分都没有错误（或关于该问题的警告）。

it comes back as E_ACCESSDENIED there are no errors (or warnings for that matter) on the keyBuffer, or any part of the line.

对此有任何想法

推荐答案

IDirectInputDevice8 :: GetDeviceState 给出以下可能的返回值：

The documentation for IDirectInputDevice8::GetDeviceState give the following possible return values:

返回值

方法成功，返回值为DI_OK。如果该方法失败，则返回值可以是以下错误值之一：DIERR_INPUTLOST，DIERR_INVALIDPARAM，DIERR_NOTACQUIRED，DIERR_NOTINITIALIZED，E_PENDING。

Return Value
If the method succeeds, the return value is DI_OK. If the method fails, the return value can be one of the following error values: DIERR_INPUTLOST, DIERR_INVALIDPARAM, DIERR_NOTACQUIRED, DIERR_NOTINITIALIZED, E_PENDING.

您应检查 DIERR _ * 宏是否与 E_ACCESSDENIED 重叠。

You should check that none of the DIERR_* macros overlap with E_ACCESSDENIED.

此外，我见过一些代码处理 E_ACCESSDENIED 的方式与 DIERR_INPUTLOST 相同。您可能想要尝试重新获取输入内容，然后再进行一次输入。

Further, some code I've seen handles E_ACCESSDENIED the same way as DIERR_INPUTLOST. You might want to try to re-Acquire the input and have another go.

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