IMsRdpClientNonScriptable ::的SendKeys [英] IMsRdpClientNonScriptable::SendKeys

问题描述

我想使用IMsRdpClientNonScriptable :: SendKeys函数将键击传输到嵌入在Form中的RDP ActiveX插件。
我正在使用C＃，VS2008，.NET 3.5和一个干净的测试项目只包含几个文件。

如本主题所述：
http://social.msdn.microsoft.com/Forums/en-US/netfxcompact/thread/ba56a8f9-e3c2-4cc4-9565-67d6a1c5cb96
生成的IMsRdpCleintNonScriptable界面不正确，但这不是我的主要问题。

我正在试图找出如何发送键组合，如alt + f4，ctrl + alt + end到远程计算机。

第一个问题：

根据MSDN，定义了SendKey功能（ http://msdn.microsoft.com/en-us/library/aa381294(VS.85).aspx ）像这样：

  HRESULT SendKeys（
 
 
 
 
 
 
 
 [in] LONG  numKeys ，
 
 
 
 
 
 
 
 [in] VARIANT_BOOL *  pbArrayKeyUp ，
 
 
 
 
 
 
 
 [ in] LONG *  plKeyData  
 
 
 
 
 
 
 
）;  
 
 
 
 
 
 
 
 

plKeyData根据MSDN与WM_KEYDOWN消息中的lParam相同（但MSDN文章中的WM_KEYDOWN链接已损坏）。

  lParam（plKeyData） 
 
 
 
 
 
 
 
 $ b指定重复次数，扫描码，扩展 - 键标志，上下文代码，上一个键状态标志和转换状态标志，如下表所示。 
 
 
 
 
 
 
 
 0-15 
 
 
 
 
 
 
 
指定当前消息的重复计数。该值是用户按住键时键击自动重复的次数。如果按键保持足够长的时间，则会发送多条消息。但是，重复计数不是累积计数。 
 
 
 
 
 
 
 
 $ 16-23 
 
 
 
 
 
 
 
指定扫描码。价值取决于OEM。 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 $ b指定密钥是否为扩展密钥，例如增强型101键或102键键盘上显示的右侧ALT和CTRL键。如果它是扩展密钥，则值为1;否则，它是0. 
 
 
 
 
 
 
 
 25-28 
 
 
 
 
 
 
 
保留;不使用。 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 $ b指定上下文代码。对于WM_KEYDOWN消息，该值始终为0。 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 $ b指定先前的键状态。如果在发送消息之前密钥已关闭，则值为1;如果密钥已启动，则该值为零。 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 $ b指定过渡状态。对于WM_KEYDOWN消息，该值始终为零。 
 
 
 
 
 
 
 
 

但是通过这个因为plKeyData不起作用！与MSDN声称的扫描码必须放在偏移0（而不是16）相反。所以没有重复计数。

第二个问题：

有时候功能失败了E_FAIL（有同样问题的人：http://stackoverflow.com/questions/1069990/keep-alive-code-fails-with-new-rdp -client ）我不知道为什么。

所以我想知道 - 我在哪里可以找到正确的规格功能？
- 为什么SendKey有时会因异常而失败？
- 有没有人知道如何使用IMsRdpClientNonScriptable接口发送键击如alt + f4（Form.SendKeys和keybd_event不可靠）

解决方案

如果您想知道它们存在的代码段中的空行，因为此站点的编辑功能被严重破坏IE6。

I'd like to use the IMsRdpClientNonScriptable::SendKeys function to transfer keystrokes to an RDP ActiveX plugin embedded in a Form.
I'm using C#, VS2008, .NET 3.5 and a clean test project only containing a few files.

Like in this topic:
http://social.msdn.microsoft.com/Forums/en-US/netfxcompact/thread/ba56a8f9-e3c2-4cc4-9565-67d6a1c5cb96 
the generated interface of IMsRdpCleintNonScriptable is not correct, however that's not my main issue.

I'm currently trying to figure out how to send key combinations like alt+f4, ctrl+alt+end to the Remote Computer.


FIRST issue:

According to MSDN the SendKey function is defined (http://msdn.microsoft.com/en-us/library/aa381294(VS.85).aspx) like this:

HRESULT SendKeys(







  [in]  LONG numKeys,







  [in]  VARIANT_BOOL *pbArrayKeyUp,







  [in]  LONG *plKeyData







);

plKeyData is according to MSDN the same as lParam in a WM_KEYDOWN message (link to WM_KEYDOWN in the MSDN article is broken, though).

lParam (plKeyData)







Specifies the repeat count, scan code, extended-key flag, context code, previous key-state flag, and transition-state flag, as shown in the following table. 







0-15







Specifies the repeat count for the current message. The value is the number of times the keystroke is autorepeated as a result of the user holding down the key. If the keystroke is held long enough, multiple messages are sent. However, the repeat count is not cumulative.







16-23







Specifies the scan code. The value depends on the OEM.







24







Specifies whether the key is an extended key, such as the right-hand ALT and CTRL keys that appear on an enhanced 101- or 102-key keyboard. The value is 1 if it is an extended key; otherwise, it is 0.







25-28







Reserved; do not use.







29







Specifies the context code. The value is always 0 for a WM_KEYDOWN message.







30







Specifies the previous key state. The value is 1 if the key is down before the message is sent, or it is zero if the key is up.







31







Specifies the transition state. The value is always zero for a WM_KEYDOWN message.

But passing this as plKeyData does NOT work! Contrary to what MSDN claims the scancode has to be put at offset 0 (instead of 16). So there is no repeat count, whatsoever.

SECOND issue:

Also sometimes the function fails with E_FAIL (someone with same problem: http://stackoverflow.com/questions/1069990/keep-alive-code-fails-with-new-rdp-client) and I'm not sure why.



So I'd like to know
- Where can I find a correct spec of the function?
- Why does SendKey sometimes fail with an Exception?
- Does anyone know how to send keystrokes like alt + f4 using the IMsRdpClientNonScriptable Interface (Form.SendKeys and keybd_event aren't reliable)

解决方案

If you are wondering about the empty lines in the code-sections they exist because the edit function of this site is severly broken on IE6.

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