function LoadFromFileTIFF(const FileName: WideString): integer:
Description
Loads an image from a TIFF file (rev. 6.0, Packbits, LZW, CCITT G.3 and G.4, etc). FileName is the file name including extension.
Returns the number of images contained in TIFF file. Result will be -1 if an error was encountered while loading, such as the file not being TIFF format (Aborting will be true). Loading errors due to a file not being available will raise an exception.
Note: ◼You can abort loading by setting Aborting to true ◼If AsyncMode = True then the result will always be -1.