I am trying to use TAdvSmoothImageListBox, creating Images dynamically and loading from stream. When I use zoom, it basically re-size thumbnail picture instead of original picture, so the quality of zoomed image is too bad.
When loading images other than via thread, the images are loaded at the itemappearance imagewidth / ItemWidth and imageheight / ItemHeight properties. changing the ItemWidth to a large value before loading them, and changing them to a lower value after loading the images should give you a better quality image when zooming.
Thank you, this solved it.