string control value change event not triggering

[loayn]

thanks for all the posts.......

[CoastalMaineBird]

Well, I don't understand why you need an event for each digit, even if it's scanned, but that's your call.

You can consider a couple of options:

1... Have a SCAN / MANUAL switch, which changes the property of the control that accepts the code from the scanner. (UPDATE VALUE WHILE TYPING is a programmable property).

Kind of ugly, but do-able.

2... Have TWO controls.  One the user sees and can type into, another one that's hidden and the scanner types into. (Hiiden controls can still generate events).

Looking at this part:

if the user needs to press the enter key or click on the front panel after ever scan of a barcode scanner that would be annoying.

You want the scan to be a complete operation - scan --> event... scan---> event.

Not scan <enter> - event... scan <enter> event.

I can see that.

But I don't see how to get there unless you can guarantee that all scans are 10 digits or end with a ? or something easily detectable.

[loayn]

You want the scan to be a complete operation - scan --> event... scan---> event.

this is exactly what i want, but the event is only triggered when i click on the front panel if i use the barcode scanner.

[CoastalMaineBird]

Then your only choice is to detect the VALUE CHANGED yourself.

three options:

1... Count N digits assuming a fixed length code.

2... Detect each digit via the existing VALUE CHANGED event, and set a timer for now + 50 mSec (or something).  When the timer expires, declare it to be done and use the value. (each digit received extends the deadline).

3... if the code has a terminating character from the scanner, use that.

[loayn]

yeah i think option 1 as johnsold previously posted......

thanks all...........