Clear Binary Variable

[malkishtini]

This is clearing the binary var for me: (8.1.7)

Do ivBinary.$assign()   ;;This will make it null
Do ivBinary.$assign('')  ;;this will return empty

Mayada

-----Original Message-----
From: omnisdev-en [mailto:omnisdev-en-bounces at lists.omnis-dev.com] On Behalf Of Michael Houlberg
Sent: Thursday, May 14, 2020 4:17 PM
To: OmnisDev List - English
Subject: Clear Binary Variable

Omnis $listers:

How do I clear a binary variable?  This variable holds an image, but when I load a new record which doesn’t have an image attached to it, I want to clear it.  Then when another record has an image, I want it to display that image again.

Calculate ivBinary as “"  ## this leaves the variable in a state where it can’t be assigned a new image later
Do ivBinary.$clear() ## doesn’t clear it.
Do ivBinary.$destruct() ## doesn’t clear it.

Do bitclear(ivBinary,1,binlength(ivBinary))  ## this works OK, but just turns the binary into all zeroes, preserving it’s previous length.  The picture control retains a little square, like a missing image.

Thanks,
Michael Houlberg
Houlberg Development, LLC




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