SampleApp.MainForm.defineMotionregionsToolStripMenuItem_Click C# (CSharp) Method

        private void defineMotionregionsToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (videoSourcePlayer.VideoSource != null)
            {
                Bitmap currentVideoFrame = videoSourcePlayer.GetCurrentVideoFrame();

                if (currentVideoFrame != null)
                {
                    MotionRegionsForm form = new MotionRegionsForm();
                    form.VideoFrame = currentVideoFrame;
                    form.MotionRectangles = detector.MotionZones;

                    // show the dialog
                    if (form.ShowDialog(this) == DialogResult.OK)
                    {
                        Rectangle[] rects = form.MotionRectangles;

                        if (rects.Length == 0)
                            rects = null;

                        detector.MotionZones = rects;
                    }

                    return;
                }
            }

            MessageBox.Show("It is required to start video source and receive at least first video frame before setting motion zones.",
                "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }