barcode

[sakti]

1. how can vfp read barcode ?<br>
2. I have been building file.exe, but it can't permanent on the screen, why ?

 

[Dataman]

By using a barcode reader with a &quot;keyboard wedge&quot;, you can scan barcodes. VFP (or any other program) sees the barcode as coming from the keyboard. Some barcode readers also have a serial connection that you can use.<br>
<br>
You have to set up an event handler to keep the EXE running. I usually set up a prg called start.prg and it will contain variable definitions, opening the database, reading configuration files, etc. But the main thing it does is to have the following code:<br>
<br>
Public OkToRun<br>
OkToRun = .T.<br>
Do While OkToRun<br>
Read Events<br>
EndDo<br>
<br>
Then in the menu choice, button (or whatever the user clicks on to exit) I put the following code:<br>
<br>
OkToRun = .F.<br>
Clear Events<br>

 

[prangster]

Check out a company called TAL. They make a product called BC-Wedge. It's software for Windows that allows communication from the reader through a serial port directly into the keyboard buffer. I believe it is less clunky than the &quot;keyboard wedge&quot; approach (although that works okay). <br>
<br>
TAL has the &quot;keyboard wedge&quot; solution too. I just found the BC-Wedge cheap, easy to implement, and reliable.<br>
<br>
Good Luck!<br>