private void AddNoteItem(Note item)
        {
            NoteItem noteItem = new NoteItem(item);

            noteItem.NoteItemClick       += NoteItem_NoteItemClick;
            noteItem.NoteItemDoubleClick += NoteItem_NoteItemDoubleClick;
            flowLayoutPanelNoteList.Controls.Add(noteItem);
        }
 private void flowLayoutPanelNoteList_Click(object sender, EventArgs e)
 {
     if (focusingNoteItem != null)
     {
         focusingNoteItem.BackColor = Color.PaleGoldenrod;
     }
     focusingNoteItem = null;
 }
 private void ChangeBackColorNoteItem(NoteItem item)
 {
     if (focusingNoteItem != null)
     {
         focusingNoteItem.BackColor = Color.PaleGoldenrod;
     }
     item.BackColor   = Color.Gold;
     focusingNoteItem = item;
 }