Hi,
I've only used ClarionFreeImage a bit (mostly use ImageEx4, but have been replacing it with ClarionFreeImage).
At a rough guess:
ThumbImage FreeImageClass
Code
If ThumbImage.iImage.Load('ImageFile.jpg')
ThumbImage.iImage.Rotate(90)
ThumbImage.iImage.SaveAs('ImageFile90.jpg')
End
Regards
Bill