protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (Items.Count == 0)
{
return;
}
if (Items.Count != boxes.Count)
{
ClearBoxes();
for (int i = 0; i < Items.Count; i++)
{
UICheckBox box = new UICheckBox
{
Font = Font,
Parent = this,
Tag = i,
Style = Style
};
box.ValueChanged += Box_ValueChanged;
boxes.Add(box);
}
}
int startX = StartPos.X;
int startY = TitleTop + StartPos.Y;
for (int i = 0; i < Items.Count; i++)
{
boxes[i].Text = Items[i].ToString();
int rowIndex = i / ColumnCount;
int columnIndex = i % ColumnCount;
boxes[i].Left = startX + ItemSize.Width * columnIndex + ColumnInterval * columnIndex;
boxes[i].Top = startY + ItemSize.Height * rowIndex + RowInterval * rowIndex;
boxes[i].Show();
}
}
private void Box_ValueChanged(object sender, bool value)
{
UICheckBox checkBox = (UICheckBox)sender;
ValueChanged?.Invoke(this, checkBox.Tag.ToString().ToInt(), checkBox.Text, checkBox.Checked);
}