public void ResetCover()
{
if (CoveredControl != null)
{
this.Bounds = CoveredControl.RectangleToScreen(CoveredControl.Bounds);
}
Invalidate();
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if ((e.Button & MouseButtons.Left) == MouseButtons.Left)
{
if (Bounds.IsEmpty || (CoveredControl != null && !CoveredControl.RectangleToScreen(CoveredControl.Bounds).Contains(this.Bounds)))
{
ResetCover();
}
}
}
private void AdjustBounds()
{
if (CoveredControl != null)
{
Rectangle coveredBounds = CoveredControl.RectangleToScreen(CoveredControl.Bounds);
this.Left = Math.Max(this.Left, coveredBounds.Left);
this.Top = Math.Max(this.Top, coveredBounds.Top);
this.Width = Math.Min(this.Right - this.Left, coveredBounds.Right - this.Left);
this.Height = Math.Min(this.Bottom - this.Top, coveredBounds.Bottom - this.Top);
mouseLocation = PointToClient(Cursor.Position);
Invalidate();
}
}
