Events with static functions

[Cristo4]

I have a class that is able to detect a global key press. However, I don't seem to be able to create a working event that notifies the Form1 of a global keypress.

The function "HookCallback" is static and for some reason it does work to the point of " MyAKeyWasPressed(int vkKeyCode)" displaying it's 2 messageboxes but the function in Form1 doesn't get fired and displays no messagebox.

What do I do wrong? I'm breaking my head on it for days now. Thanks in advance.

The code in Form1:

...
        InterceptKeys Hook = new InterceptKeys();
 
        private void Form1_Load(object sender, EventArgs e)
        {
            Hook.MyKeyPressed += new MyOnKeyPressHandler(MyAKeyWasPressed);
         }
 
        private void MyAKeyWasPressed(int vkKeyCode)
        {
            MessageBox.Show("Form1 succesfully received an event from the class!");
            MessageBox.Show(((Keys)vkKeyCode).ToString());
        }
 

The code in the class:

...
namespace MK
{
    public delegate void MyOnKeyPressHandler(int KeyCode);
    class InterceptKeys
{
        public event MyOnKeyPressHandler MyKeyPressed;
...
        public InterceptKeys()  // constructor
        {
            MyKeyPressed = new MyOnKeyPressHandler(OnKeyPressed);
        }
        private static void OnKeyPressed(int vkKeyCode)
        {
            MessageBox.Show("The function OnKeyPressed in the class worked! The key I found was: "+((Keys)vkKeyCode).ToString());
        }
        private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
        {
            if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
            {
                int vkCode = Marshal.ReadInt32(lParam);
                OnKeyPressed(vkCode);
            }
 
            return CallNextHookEx(_hookID, nCode, wParam, lParam);
        }
 
...
 
}