property ImageOriginalHeight[idx: Integer]: Integer;
Use ImageOriginalHeight to read or set the original height of the image, idx
This is useful only when images are stored as thumbnails (StoreType
= ietThumb/ietFastThumb) and you need to know the original image size.
Note: If images are being loaded on demand, then the image dimensions will not be valid until the image is loaded. Either use the OnImageLoaded
to delay until the image is ready, or force loading of the image by using EnsureImageLoaded