如何在C#中停止进一步处理全局热键

using System.Runtime.InteropServices;

[DllImport("user32.dll")]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);

[DllImport("user32.dll")]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);

private const int MY_HOTKEY_ID = 1;
private const uint MOD_ALT = 0x0001;   // ALT键
private const uint MOD_CONTROL = 0x0002;   // Ctrl键
private const uint MOD_SHIFT = 0x0004;   // Shift键
private const uint MOD_WIN = 0x0008;   // Win键

private const uint VK_F1 = 0x70;   // F1键
private const uint VK_F2 = 0x71;   // F2键
// 其他键位的VK值可以参考：https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes

IntPtr hWnd = Process.GetCurrentProcess().MainWindowHandle;
RegisterHotKey(hWnd, MY_HOTKEY_ID, MOD_CONTROL, VK_F1);

protected override void WndProc(ref Message m)
{
    if (m.Msg == 0x0312 && m.WParam.ToInt32() == MY_HOTKEY_ID)
    {
        // 全局热键触发后的处理逻辑
        // 可以在这里停止进一步处理全局热键

        // 取消注册全局热键
        UnregisterHotKey(m.HWnd, MY_HOTKEY_ID);
    }
    base.WndProc(ref m);
}

IntPtr hWnd = Process.GetCurrentProcess().MainWindowHandle;
UnregisterHotKey(hWnd, MY_HOTKEY_ID);