public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof(string))
{
ImageOverlay imageOverlay = value as ImageOverlay;
if (imageOverlay != null)
{
if (imageOverlay.Image == null)
{
return("(none)");
}
else
{
return("(set)");
}
}
TextOverlay textOverlay = value as TextOverlay;
if (textOverlay != null)
{
if (String.IsNullOrEmpty(textOverlay.Text))
{
return("(none)");
}
else
{
return("(set)");
}
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
/// <summary>
/// Initialize the standard image and text overlays
/// </summary>
protected virtual void InitializeStandardOverlays()
{
OverlayImage = new ImageOverlay();
AddOverlay(OverlayImage);
OverlayText = new TextOverlay();
AddOverlay(OverlayText);
}
