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Tech Tip: Saving a picture field to disk
PRODUCT: 4D | VERSION: 2004 | PLATFORM: Mac & Win
Published On: October 6, 2006
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When you want to save your picture field onto the hard disk, you can simply use the WRITE PICTURE FILE command:

For example, the following code will create a .jpg file on disk, next to the structure file.

WRITE PICTURE FILE("Mypicturefile.jpg";[Table 1]Field2;"JPEG")

Please note that this command uses QuickTime conversion routines (version 4 or above recommended) for Mac OS and Windows. If QuickTime is not installed, the command creates a PICT file by default.

For more information on this command, please check the following location:
https://www.4d.com/docs/CMU/CMU00680.HTM