Scanning works once, but fails the second time

[NDFCU]

I am an IT developer at Notre Dame Federal Credit Union in the US. We are considering the use of GDTwain on our Intranet, but I am having some issues getting it to work properly.

Although I can get the OCX to function properly the *first* time upon opening Internet Explorer, the OCX gives an error message the *second* time I try to run it.

In order to get it to work again, I have to close and reset Internet Explorer. It seems like there might be a memory leak of some sort. Perhaps you know what might be wrong.

Here is the debug error message:

End: OpenDefaultSource
RC: TWRC_FAILURE
CC: TWCC_MAXCONNECTIONS (DS is connected to max possible apps)
State: 3

Again, I can get to state 4 the first time, and the rest of the scan goes smoothly. But the second time, it gives me that error message.

Here is my source (vbscript):

Code: Select all

Set oTWAIN = CreateObject("gdtwain.twain")

   oTWAIN.SetLicenseNumber("XXXXXXXXXXXXXXXXXXXXXXX")

   oTWAIN.TwainOpenDefaultSource

   oTWAIN.TwainHasFeeder()
   oTWAIN.TWAINSetAutoFeed(TRUE)
   
   nImageID = oTWAIN.TwainAcquireToImageID
         
   If nImageID <> 0 Then
     oTWAIN.SaveAsPdf ("c:\gdtwaintest.pdf")
     oTWAIN.CloseImage (nImageID)
      MsgBox "Save c:\gdtwaintest.pdf completed"
   End If
   
   oTWAIN.TwainCloseSource
   oTWAIN.TwainUnloadSourceManager
   oTWAIN.TwainCloseSourceManager

[Loïc]

Hi,

I think the oTWAIN object created should be released from the memory.


You can try to add this line at the end of your code to do that:

Code: Select all

Set oTWAIN = Nothing

If the problem has not gone away with this, please send me your web page for test at esupport (at) gdpicture (dot) com.

Best regards,

Loïc Carrère