全局键盘挂钩 (C#)
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Global Keyboard Hooks (C#)
提问by
Possible Duplicate:
Global keyboard capture in C# application
可能的重复：
C# 应用程序中的全局键盘捕获
Can anyone help me setup a global keyboard hook for my application?
谁能帮我为我的应用程序设置一个全局键盘钩子？
I want to set hotkeys (such as Ctrl+S) that can be used when not focused on the actual form.
我想设置在不关注实际表单时可以使用的热键（例如Ctrl+ S）。
回答by Tim Robinson
Paul's post links to two answers, one telling you how to implement a hook, and another telling you to call RegisterHotKey. You shouldn't need to install a hook for something as simple as a Ctrl+S hotkey, so call RegisterHotKeyinstead.
Paul 的帖子链接到两个答案，一个告诉您如何实现钩子，另一个告诉您调用 RegisterHotKey。您不需要为像 Ctrl+S 热键这样简单的东西安装钩子，因此请改为调用RegisterHotKey。
回答by Tim Robinson
Or you can use C#'s MessageFilter. It should work while any control/form from your application's process has focus.
或者您可以使用 C# 的 MessageFilter。当您的应用程序流程中的任何控件/表单具有焦点时，它应该可以工作。
Sample Code:
示例代码：
class KeyboardMessageFilter : IMessageFilter
{
public bool PreFilterMessage(ref Message m)
{
if (m.Msg == ((int)Helper.WindowsMessages.WM_KEYDOWN))
{
switch ((int)m.WParam)
{
case (int)Keys.Escape:
// Do Something
return true;
case (int)Keys.Right:
// Do Something
return true;
case (int)Keys.Left:
// Do Something
return true;
}
}
return false;
}
}
And than simply add a new MessageFilter to your Application:
而不是简单地向您的应用程序添加一个新的 MessageFilter：
Application.AddMessageFilter(new KeyboardMessageFilter());
