private System.Drawing.Bitmap DoAction(enOperation en)
{
System.Drawing.Bitmap bm = null;
switch (en)
{
case enOperation.undo:
if (m_GetCurrentIndex > 0)
{
m_GetCurrentIndex--;
bm = lst_bitmaps[m_GetCurrentIndex];
}
break;
case enOperation.redo:
if (m_GetCurrentIndex < lst_bitmaps.Count - 1)
{
m_GetCurrentIndex++;
bm = lst_bitmaps[m_GetCurrentIndex];
}
break;
default:
break;
}
return(bm);
}
public System.Drawing.Bitmap SetOperation(enOperation en)
{
m_enOperation = en;
return(DoAction(en));
}
