Hi, i'v tested your app and i have problems with mouse click... in intfgraphics.pas the TLazIntfImage.Create(ARawImage: TRawImage; ADataOwner: Boolean); receive the raw image, but when Create(Desc.Width, Desc.Height, []); is called the coordinates are negatives, instead of 389, 114 they are -388, -113 and then raise FPImageException.Create('Invalid Size'); is called inside TLazIntfImage.InternalSetSize