private void B_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Middle)
{
Block.DisConnect(((OutButton)sender).Index);
NeedInvalidate?.Invoke();
}
}
private void btnIn_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left)
{
return;
}
var s = (Control)sender;
Left = Left + (e.X - ((Point)s.Tag).X);
Top = Top + (e.Y - ((Point)s.Tag).Y);
NeedInvalidate?.Invoke();
}
public Task InvalidateAndRenderAsync()
{
using (LockInternal())
{
if (_invalidateAsync != null)
{
return(_invalidateAsync.Task);
}
if (NeedInvalidate != null)
{
NeedInvalidate?.Invoke(this, EventArgs.Empty);
_invalidateAsync = _invalidateAsync ?? new TaskCompletionSource <bool>();
return(_invalidateAsync.Task);
}
return(Task.FromResult(false));
}
}