Hi,

I want to have something similar to the UltraTextEditor->ButtonRight propertey.

But instead of a button I want to have an additional TextUIElement, so I tried to write my own via CreationFilter. But why is the TextUIElement dissapearing if I enter the edit mode.

The creation filter code:

public class AddLabelCreationFilter : IUIElementCreationFilter
{
public void AfterCreateChildElements(UIElement parent)
{
if (parent is EditorWithTextUIElement)
{
EditorWithTextUIElement editorUIElement = parent as EditorWithTextUIElement;
TextUIElement txtElem = new TextUIElement(parent, "AB");

int xPos = editorUIElement.Rect.Width - 40;

txtElem.Rect = new Rectangle(xPos, 1, 40, editorUIElement.Rect.Height);

UIElement dispElem = editorUIElement.ChildElements.FirstOrDefault(x => x is EditorWithTextDisplayTextUIElement);

if (dispElem != null)
{
dispElem.Rect = new Rectangle(dispElem.Rect.X, dispElem.Rect.Y, dispElem.Rect.Width - 40, dispElem.Rect.Height);
}

editorUIElement.ChildElements.Add(txtElem);
}
}

public bool BeforeCreateChildElements(UIElement parent)
{
return false;
}

}