// Place clip points, maximum 4
private void ImagePanel_MouseClick(object sender, MouseEventArgs e)
{
if (ClipPoints.Count < 4)
{
Point p = ImagePanel.PanelToImage(e.Location);
if (p.X < 0 || p.Y < 0 || p.X > ImagePanel.img.Width || p.Y > ImagePanel.img.Height)
{
return;
}
ClipPoints.Add(p);
if (ClipPoints.Count == 4)
{
ImageClipButton.Enabled = true;
}
}
}