public bool F4 = false;
private void Form1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
if (e.KeyCode == Keys.F4 && e.Alt == true)
{
F4 = true;
}
}
private void Form1_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
F4 = false;
}
private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
if (F4) e.Cancel = true;
}