blocks|key|710714|text|调用GetKeyboardLayout以检索活动布局值，然后执行一些条件循环以获得您想要的结果。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|710715|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

call the GetKeyboardLayout to retrieve the active layout value, then, do some conditional loop to get the result you want.

blocks|key|710717|text|你应该看看这个方法GetKeyboardState，GetKeyboardLayout，MapVirtualKeyEx，ToUnicodeEx。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|710718|解决方案应该看起来像这样|710719|byte[]+keyboardState+=+new+byte[256];
GetKeyboardState(keyboardState);
IntPtr+handle+=+GetKeyboardLayout(0);
uint+scanCode+=+MapVirtualKeyEx(VirtualKeyCode,+0,+handle);
StringBuilder+stringBuilder+=+new+StringBuilder(2);

int+nResultLower+=+ToUnicodeEx(VirtualKeyCode,+scanCode,+keyboardState,+stringBuilder,
+++++++++++++++++++++++++++++++++++++++stringBuilder.Capacity,+0,+handle);

string+output=+string.Empty;
if+(nResultLower+!=+0)
{
++output+=+stringBuilder.ToString();
}|code-block|syntax|javascript|710720|entityMap|0|LINK|mutability|MUTABLE|url|http://www.pinvoke.net/default.aspx/user32.getkeyboardstate|1|http://www.pinvoke.net/default.aspx/user32/GetKeyboardLayout.html|2|http://www.pinvoke.net/default.aspx/user32/MapVirtualKeyEx.html|3|http://www.pinvoke.net/default.aspx/user32/ToUnicodeEx.html^0|9|G|0|Q|H|1|18|F|2|1O|B|3|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]|$A|12|B|13|1|14]|$A|15|B|16|1|17]|$A|18|B|19|1|1A]]|C|$]]|$1|D|3|E|5|6|7|1B|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1C|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|1D|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|N|O|P|C|$Q|T]]|U|$5|N|O|P|C|$Q|V]]|W|$5|N|O|P|C|$Q|X]]]]

You should take a look at this methods <a href="http://www.pinvoke.net/default.aspx/user32.getkeyboardstate" rel="nofollow">GetKeyboardState</a>, <a href="http://www.pinvoke.net/default.aspx/user32/GetKeyboardLayout.html" rel="nofollow">GetKeyboardLayout</a>, <a href="http://www.pinvoke.net/default.aspx/user32/MapVirtualKeyEx.html" rel="nofollow">MapVirtualKeyEx</a>, <a href="http://www.pinvoke.net/default.aspx/user32/ToUnicodeEx.html" rel="nofollow">ToUnicodeEx</a>.

Solution should look something like

<pre><code>byte[] keyboardState = new byte[256];
GetKeyboardState(keyboardState);
IntPtr handle = GetKeyboardLayout(0);
uint scanCode = MapVirtualKeyEx(VirtualKeyCode, 0, handle);
StringBuilder stringBuilder = new StringBuilder(2);

int nResultLower = ToUnicodeEx(VirtualKeyCode, scanCode, keyboardState, stringBuilder,
 stringBuilder.Capacity, 0, handle);

string output= string.Empty;
if (nResultLower != 0)
{
 output = stringBuilder.ToString();
}
</code></pre>

blocks|key|1412572|text|不太确定我们讨论的是相同的场景，但我最近遇到了类似的问题，ToUnicodeEx中断了用户的击键(当使用'alt%2Bnumpad‘或在德语键盘上使用'%2B’键修饰符时)，导致意外的字母被打印到屏幕上，如果需要的话。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1412573|通过在运行ToUnicodeEx之前将@Nejchy的代码与ClearKeyboardBuffer方法相结合，解决了我的问题：|1412574|private+static+bool+ClearKeyboardBuffer(uint+vk,+uint+sc,+IntPtr+hkl)
{
++++StringBuilder+sb+=+new+StringBuilder(10);
++++int+rc+=+-1;
++++bool+isDeadKey+=+false;
++++while+(rc+<+0)
++++{
++++++++rc+=+user32.ToUnicodeEx(vk,+sc,+new+byte[256],+sb,+sb.Capacity,+0,+hkl);
++++++++if+(!isDeadKey+&&+rc+==+-1)+isDeadKey+=+true;
++++++++Console.Write(rc);
++++}
++++return+isDeadKey;
}|code-block|syntax|javascript|1412575|在执行“ToUnicodeEx”的代码中：|1412576|var+isDeadKey+=+ClearKeyboardBuffer((uint)aKey,+0,+hKd);
if+(isDeadKey)+return;
user32.ToUnicodeEx((uint)aKey,+vkCode,+keyboardState,+characters,+10,+(uint)0,+hKd);|1412577|参考：http://www.siao2.com/2006/03/23/558658.aspx+http://www.siao2.com/2006/04/06/569632.aspx|offset|length|1412578|另请看他的代码：https://stackoverflow.com/a/8705696/802848|1412579|entityMap|0|LINK|mutability|MUTABLE|url|http://www.siao2.com/2006/03/23/558658.aspx|1|http://www.siao2.com/2006/04/06/569632.aspx|2|https://stackoverflow.com/a/8705696/802848^0|0|0|0|0|0|3|17|0|1B|17|1|0|8|16|2|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|16|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|17|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|18|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|19|8|@]|9|@$O|1A|P|1B|1|1C]|$O|1D|P|1E|1|1F]]|A|$]]|$1|Q|3|R|5|6|7|1G|8|@]|9|@$O|1H|P|1I|1|1J]]|A|$]]|$1|S|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]|10|$5|V|W|X|A|$Y|11]]|12|$5|V|W|X|A|$Y|13]]]]

Not quite sure we're talking about same scenario, but I recently encountered similar problem where ToUnicodeEx interrupted users' key strokes (when using modifiers like 'alt+numpad' or on German keyboard the '+' key modifier), causing unexpected letters to be printed into screen instead if the desired ones.

Solved my problem by combining @Nejchy's code with ClearKeyboardBuffer method right before running ToUnicodeEx:

<pre><code>private static bool ClearKeyboardBuffer(uint vk, uint sc, IntPtr hkl)
{
 StringBuilder sb = new StringBuilder(10);
 int rc = -1;
 bool isDeadKey = false;
 while (rc &lt; 0)
 {
 rc = user32.ToUnicodeEx(vk, sc, new byte[256], sb, sb.Capacity, 0, hkl);
 if (!isDeadKey &amp;&amp; rc == -1) isDeadKey = true;
 Console.Write(rc);
 }
 return isDeadKey;
}
</code></pre>

In your code that does 'ToUnicodeEx':

<pre><code>var isDeadKey = ClearKeyboardBuffer((uint)aKey, 0, hKd);
if (isDeadKey) return;
user32.ToUnicodeEx((uint)aKey, vkCode, keyboardState, characters, 10, (uint)0, hKd);
</code></pre>

Reference: 
<a href="http://www.siao2.com/2006/03/23/558658.aspx" rel="nofollow noreferrer">http://www.siao2.com/2006/03/23/558658.aspx</a>
<a href="http://www.siao2.com/2006/04/06/569632.aspx" rel="nofollow noreferrer">http://www.siao2.com/2006/04/06/569632.aspx</a>

Also look at his code:
<a href="https://stackoverflow.com/a/8705696/802848">https://stackoverflow.com/a/8705696/802848</a>

I've implemented a low-level keyboard hook using SetWindowsHookEx() function. It works fine and returns a virtual key code for each keystroke. I can convert this virtual key code to a System.Windows.Input.Key using KeyInterop.KeyFromVirtualKey(). But the target is to get a symbol that corresponds to this virtual key code in current keyboard layout.

I.e. for German layout I want to get "Y" for Key.Z, "Z" for Key.Y.

Does anyone can help?

Thank you.

Intercept keyboard input using current keyboard layout

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我已经使用SetWindowsHookEx()函数实现了一个低级键盘钩子。它工作得很好，每次击键都会返回一个虚拟键码。我可以使用KeyInterop.KeyFromVirtualKey()将这个虚拟密钥代码转换为System.Windows.Input.Key。但目标是在当前键盘布局中获得与此虚拟键码相对应的符号。例如...

问使用当前键盘布局截取键盘输入
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