ScreenToGif.Pages.Crop.pictureCrop_MouseDown C# (CSharp) Method

        private void pictureCrop_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                _posX = e.X;
                _posY = e.Y; ;

                _posXmove = e.X;
                _posYmove = e.Y;
            }
        }