.net2.0轻松判断NumLock、CapsLock、ScrollLock、Insert键的状态

不多说了，直接插代码：） 不用Api
public Form1()
{
  InitializeComponent();

  Application.Idle += new EventHandler(Application_Idle);
}
private void Application_Idle(object sender, EventArgs e)
{
  if (Control.IsKeyLocked(Keys.NumLock))
    labelNumLock.Text = "ON";
  else
    labelNumLock.Text = "OFF";

  if (Control.IsKeyLocked(Keys.CapsLock))
    labelCapsLock.Text = "ON";
  else
    labelCapsLock.Text = "OFF";

  if (Control.IsKeyLocked(Keys.Scroll))
    labelScrollLock.Text = "ON";
  else
    labelScrollLock.Text = "OFF";

  if (Control.IsKeyLocked(Keys.Insert))
    labelInsert.Text = "ON";
  else
    labelInsert.Text = "OFF";
}