private void buttonSavePNG_Click(object sender, EventArgs e)
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "PNG Files (*.png)|*.png";
saveFileDialog1.FilterIndex = 1;
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
int width = checkBoxSize.Checked ? 800 : (int)this.plot1.Model.Width;
int height = checkBoxSize.Checked ? 600 : (int)this.plot1.Model.Height;
Brush backgnd = checkBoxBgnd.Checked ? null : new SolidBrush(Color.White);
MousePlot.Export(this.plot1.Model, saveFileDialog1.FileName, width, height, backgnd);
}
}