Image Display

[SteveE]

I have a verification DB where a barcode is scanned which brings up details and an image of the item which is displayed on the screen for visual comparision by the operator. Once verified as correct item this Bar Code is then set to a check data string, my next scan check against the stored code. If the code is correct OK, if not not an error screen is displayed.

My problem is that once the correct image is displayed on the screen I want it to stay there unless an error occurs, I can make this happen by requery the source each time a scan is made but this creates a time lag while the image is pulled from the table and not really good. If I remove my requery of the source table the scans verifications are very fast but I have no image.

What I really want to to hold and display the image in a temp field and only requery the source when an error has occured?

Any advise appriciated
Steve

 

[jal]

I don't understand. I would think you'd WANT to pull the current image from the table during each new scan. If you leave the previous image onscreen it might be the wrong image for the current scan. Care to explain?

 

[SteveE]

Many thanks for the reply.
FYI
The scans should all be of the same product set by the operator, the image which causes the lag in responce when loading does not need to re-present every time a correct scan is made ONLY when an error scan has been recorded, tat tis point I requert the sourse to get the correct image.

I have managed to get around this now by using unbound fields on my form which take their values at the initial setting of the scans. These will refersh only if I get errors in the scanning.

Not sure if this is the best way to go about this but on our test track I am able to now scan 600 per/hour without any major time lags and this is approx 50% above what is required. so everybody is now happy.

I appreaicate your interest though if you have any ideas on how I should have approached this better then I would be glad to hear.
regards
Steve