public Bitmap GetImage(int x, int y, int w, int h)
{
var img = VideoCapture.GetImage(x, y, w, h);
SampleImage = img;
// update controls
form.checkBoxGraphicSampling.Checked = false;
PictureBoxShow(img);
form.textBoxGraphicX.Text = x.ToString();
form.textBoxGraphicY.Text = y.ToString();
form.textBoxGraphicWidth.Text = w.ToString();
form.textBoxGraphicHeight.Text = h.ToString();
form.textBoxGraphicColorR.Text = string.Empty;
form.textBoxGraphicColorG.Text = string.Empty;
form.textBoxGraphicColorB.Text = string.Empty;
form.textBoxGraphicWebColor.Text = string.Empty;
form.textBoxGraphicCode.Text = GenerateCode(x, y, form.comboBoxGraphicFilename.Text);
return(img);
}