/* File Print */
private void menuFilePrint_Click(object sender, EventArgs e)
{
if (this.tabControl.TabCount <= 0) return;
RichTextBox rtb = (RichTextBox)this.tabControl.SelectedTab.Controls[0];
RichTextBoxDocument document = new RichTextBoxDocument(rtb);
dialogPrint.Document = document;
if (dialogPrint.ShowDialog() == DialogResult.OK)
{
document.Print();
}
}
