출처 :&nbsp;<a href="https://www.fluxbytes.com/csharp/how-to-register-a-global-hotkey-for-your-application-in-c/" target="_blank" class="tx-link">https://www.fluxbytes.com/csharp/how-to-register-a-global-hotkey-for-your-application-in-c/</a>출처2 :&nbsp;<a href="https://stackoverflow.com/questions/400113/best-way-to-implement-keyboard-shortcuts-in-a-windows-forms-application/400325#400325" target="_blank" class="tx-link">https://stackoverflow.com/questions/400113/best-way-to-implement-keyboard-shortcuts-in-a-windows-forms-application/400325#400325</a> <a href="http://motolies.tistory.com/541" target="_blank">2016/08/26 - [프로그램 자료/Visual C#] - 글로벌 키보드/마우스 후킹 훅킹 Global Hook</a> <div class="txc-textbox" style="border-style: solid; border-width: 1px; border-color: rgb(254, 254, 184); background-color: rgb(254, 254, 184); padding: 10px;">using System;

using System.Windows.Forms;

&nbsp;

namespace GlobalHotkeyExampleForm

{

&nbsp;&nbsp;&nbsp;
public partial class ExampleForm :
Form

&nbsp;&nbsp;&nbsp;
{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
[System.Runtime.InteropServices.DllImport("user32.dll")]

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
private static
extern bool
RegisterHotKey(IntPtr hWnd, int id, int
fsModifiers, int
vk);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
[System.Runtime.InteropServices.DllImport("user32.dll")]

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
private static
extern bool
UnregisterHotKey(IntPtr hWnd, int id);

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
enum KeyModifier

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; None =
0,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Alt =
1,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Control =
2,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Shift =
4,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; WinKey =
8

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
public ExampleForm()

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; InitializeComponent();

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // The id of the hotkey.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int
id = 0;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // Register Shift + A as global hotkey.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; RegisterHotKey(this.Handle,
id, (int)KeyModifier.Shift,
Keys.A.GetHashCode());

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
protected override void
WndProc(ref
Message m)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; base.WndProc(ref m);

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if
(m.Msg
== 0x0312)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /*
Note that the three lines below are not needed if you only want to register one
hotkey.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; * The below lines are useful
in case you want to register multiple keys, which you can use a switch with the
id as argument, or if you want to know which key/modifier was pressed for some
particular reason. */

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // The key of the hotkey that was pressed.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Keys key = (Keys)(((int)m.LParam &gt;&gt; 16) &amp; 0xFFFF);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // The modifier of the hotkey that was pressed.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; KeyModifier modifier = (KeyModifier)((int)m.LParam &amp; 0xFFFF);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // The id of the hotkey that was pressed.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int
id = m.WParam.ToInt32();

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MessageBox.Show("Hotkey has been pressed!");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // do
something

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}

&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
private void
ExampleForm_FormClosing(object sender,
FormClosingEventArgs e)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // Unregister hotkey with id 0 before closing the form. You
might want to call this more than once with different id values if you are
planning to register more than one hotkey.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; UnregisterHotKey(this.Handle, 0);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}

&nbsp;&nbsp;&nbsp;
}

}</div>

[C#] 글로벌 키보드 후킹 global key hook