// When the SongAlert closes set it to null in this scope so we know
private void Song_Alert_Close(object sender, FormClosingEventArgs e)
{
// We must handle an unsafe thread disposal here so that the parent forms Dispose method does not cause cross thread errors
// But first we have to check if the handle is created yet, if it isn't we attach to the HandleCreated event
if (alert.IsHandleCreated)
{
Control.CheckForIllegalCrossThreadCalls = false;
alert.Dispose();
Control.CheckForIllegalCrossThreadCalls = true;
alert = null;
}
else
{
alert.HandleCreated += (send, ev) =>
{
Control.CheckForIllegalCrossThreadCalls = false;
alert.Dispose();
Control.CheckForIllegalCrossThreadCalls = true;
alert = null;
};
}
}
