Hi,

UltraCheckEditor doesn't have any built-in support for multi-line text. But I was about to find a pretty simple workaround for you using a CreationFilter. All you have to do is tell the TextUIElement in the UltraCheckeditor to support multiline. So here's a little sample CreationFilter. You could create one instance of this class and attach it to any number of UltraCheckEditor controls and it watches for the creation of the TextUIElement and sets Multiline to true.

        private MultiLineCheckEditorCreationFilter multiLineCheckEditorCreationFilter = new MultiLineCheckEditorCreationFilter();
        private void Form1_Load(object sender, EventArgs e)
        {
            this.ultraCheckEditor1.CreationFilter = multiLineCheckEditorCreationFilter;
            this.ultraCheckEditor1.Text = "Line 1" + Environment.NewLine + "Line 2";
        }

        public class MultiLineCheckEditorCreationFilter : IUIElementCreationFilter
        {
            #region IUIElementCreationFilter Members

            void IUIElementCreationFilter.AfterCreateChildElements(UIElement parent)
            {
                TextUIElement textUIElement = parent as TextUIElement;
                if (textUIElement != null)
                {
                    textUIElement.MultiLine = true;
                }
            }

            bool IUIElementCreationFilter.BeforeCreateChildElements(UIElement parent)
            {
                // Do nothing. 
                return false;
            }

            #endregion
        }