Margin between checkbox and image

this.radCheckedListBox1.VisualItemFormatting += this.RadCheckedListBox1_VisualItemFormatting;
private void RadCheckedListBox1_VisualItemFormatting(object sender, ListViewVisualItemEventArgs e)
{
    e.VisualItem.Image = Resources.bul;
    //space between image and text
    e.VisualItem.Layout.LeftPart.Margin = new Padding(0, 0, 15, 0);
    //space between checkbox and image
    ((e.VisualItem as SimpleListViewVisualItem).Children[0] as ListViewItemCheckbox).Padding = new Padding(0, 0, 15, 0);
}