Hot Keys

RESOURCES

Hot Key sample project

Virtual key list

RegisterHotKey Function

Control.WndProc Method

C# CODE

Add Interop Services above the namespace:

using System.Runtime.InteropServices;

Add the following to the form class:

#region DllImports
[DllImport("user32.dll")]
public static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, uint vlc);
[DllImport("user32.dll")]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
#endregion

protected override void WndProc(ref Message msg)
{
    if (msg.Msg == 0x0312) //our hot button recognition and function triggering
    {
        int id = msg.WParam.ToInt32();
        if (id == 1) { //our designated ID to execute
            execFunction(); //our function to execute
        }
        if (id == 2) { //our designated ID to execute
            execSecondFunction(); //our second function to execute
        }
    }
    base.WndProc(ref msg);
 }

In your form load or initialize function register the hotkey like so:

public Form1()
{
    RegisterHotKey(this.Handle, 1, 0x0002, '1'); //hold down CTRL (0x0002) and press 1 key, trigger ID 1 in WndProc
    RegisterHotKey(this.Handle, 2, 0x0000, '2'); //second example. Just press 2 key, trigger ID 2 in WndProc
}

Our execFunction(). This is just an example function, change it to whatever you want:

void execFunction() {
    MessageBox.Show("You pressed the hotkey!");
}

void execSecondFunction() {
    MessageBox.Show("You pressed the 2nd hotkey!");
}