// show context menu when user presses the right button
private void _flex_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
// hide current note, if any
if (_note != null)
{
_note.HideNote();
_note = null;
}
// make sure user clicked a valid cell
int row = _flex.MouseRow;
int col = _flex.MouseCol;
if (row >= _flex.Rows.Fixed && col >= _flex.Cols.Fixed)
{
// select cell that was clicked
_flex.Select(row, col);
// update context menu
bool hasNote = GetNoteAtMouse() != null;
_mInsertNote.Visible = !hasNote;
_mEditNote.Visible = hasNote;
_mDeleteNote.Visible = hasNote;
// show the menu
_menuActive = true;
_menu.Show(_flex, new Point(e.X, e.Y));
//Application.DoEvents();
_menuActive = false;
}
}
}
private void _mInsertNote_Click(object sender, System.EventArgs e)
{
// create note
CellNote1 note = new CellNote1("Note: ");
// attach note to cell
CellRange rg = _flex.Selection;
rg.UserData = note;
_flex.Invalidate();
// go edit the new note
_mEditNote_Click(sender, e);
}
//------------------------------------------------------------------------------------------------------
#region ** menu event handlers
private void _mDeleteNote_Click(object sender, System.EventArgs e)
{
// get note
CellRange rg = _flex.Selection;
CellNote1 note = rg.UserData as CellNote1;
// clear note
if (note != null)
{
rg.UserData = null;
_flex.Invalidate();
}
// resume showing notes
_menuActive = false;
}
private void _mEditNote_Click(object sender, System.EventArgs e)
{
// get note
CellRange rg = _flex.Selection;
CellNote1 note = rg.UserData as CellNote1;
// edit note
if (note != null)
{
Rectangle r = _flex.GetCellRect(rg.r1, rg.c1);
r = _flex.RectangleToScreen(r);
note.EditNote(r);
}
// resume showing notes
_menuActive = false;
}
//------------------------------------------------------------------------------------------------------
#region ** grid event handlers
// show/hide cell notes
private void _flex_MouseHoverCell(object sender, System.EventArgs e)
{
// hide current note, if any
if (_note != null)
{
_note.HideNote();
_note = null;
}
// don't show note if the grid is not focused or if the context menu is active
if (!_flex.Focused || _menuActive)
{
return;
}
// show new note, if any
_note = GetNoteAtMouse();
if (_note != null)
{
Rectangle r = _flex.GetCellRect(_flex.MouseRow, _flex.MouseCol);
r = _flex.RectangleToScreen(r);
_note.ShowNote(r);
}
}
