故障模拟击键 [英] Trouble Simulating Keystrokes

问题描述

我过去曾经使用WIN32API调用来模拟击键而没有太多麻烦.即使到现在，从表面上看，它似乎仍然有效.我正在使用Win32 SendMessage调用将WM_KEYDOWN，WM_CHAR，WM_KEYUP消息发送到记事本实例.

I've used WIN32API calls in the past to simulate keystrokes without much trouble. Even now, at a superficial level, it seems to work. I'm using the Win32 SendMessage call to send a WM_KEYDOWN, WM_CHAR, WM_KEYUP message to an instance of Notepad.

当然，我发送的任何内容都会出现在记事本中.

And sure enough, whatever I send appears in Notepad.

但是在使用Spy ++检查消息时；我注意到，我发送的击键与我实际键入的键或使用屏幕键盘上内置的Windows创建的键明显不同.

But while using Spy++ to inspect the messages; I noticed that my sent Keystrokes were noticeably different than the keys I had actually typed or the ones created using Windows built-in on screen keyboard.

在Spy ++中，我的单个WM_KEYDOWN生成两行:

In Spy++ my single WM_KEYDOWN generates two lines:

<001> 00234 S WM_KEYDOWN nVirtKey:'W'....
<002> 00234 R WM_KEYDOWN

实际按下W键(或使用OnScreenKeyboard)仅生成一行

Pressing the W key for real (or using the OnScreenKeyboard) generates only a single line

<003> 00234 P WM_KEYDOWN nVirtKey:'W'...

如果我展开这些消息，我会看到"S"代表已发送，R-已接收"，P-已发布".

If I expand these messages, I can see that 'S' represents Sent, R - 'Received', and P - 'Posted'.

有人可以告诉我如何通过编程更准确地模拟键盘输入吗?我已经匹配了其余消息(包括lParam值).

Can anyone tell how I can more accurately simulate keyboard input programatically? I've matched the rest of the message (including the lParam value).

推荐答案

我认为您需要使用 PostMessage 而不是 SendMessage .除了将邮件传递到收件人的方式外，几乎是相同的.

I think you will need to use PostMessage rather than SendMessage. It's pretty much the same other than the way that the message is delivered to the reciever.

http://msdn.microsoft.com/zh-CN/library/windows/desktop/ms644944%28v=vs.85%29.aspx

这篇关于故障模拟击键的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！