VB6, The Registry and PDF Printing

[MLC]

I have read many threads and discussions on how to supress the PDF Writer prompt screen and allocate a filename directly to the PDF file from a VB6 program. I am therefore trying to set the Registry value 'PDFFileName' to the filename I want before attempting to print.

The line of code I have is:

retval = RegSetValueExString(HKEY_CURRENT_USER, "Software\ADOBE\Acrobat PDFWriter\PDFFileName", 0, REG_SZ, MyFilename, mylen)

MyFilename is a string which has a filename with full path, and mylen is the length of this string in bytes as returned by LenB. The return value I get is 0 - ie. there is no error, and yet it doesn't actually do anything!

The information I have read about the function RegSetValueExString says that it will create the value if it is not already there.

I have tried creating the PDFFileName value directly via regedit before running the code but it doesn't set it.

I have tried creating the PDFFileName value in regedit and allocating it a valid filename and path. Then the VB6 behaves as I want, as it bypasses the prompt window from PDF Writer and creates the file (and then removes the PDFFilename setting!)

I feel like I am going round in circles - any thoughts anyone??????

Thanks

[Killer42]

I think you need to "open" and "close" the key. See this example code from MS' website...

Private Sub SetKeyValue (sKeyName As String, sValueName As String, _
   vValueSetting As Variant, lValueType As Long)
  Dim lRetVal As Long         'result of the SetValueEx function
  Dim hKey As Long         'handle of open key
 
  'open the specified key
  lRetVal = RegOpenKeyEx(HKEY_CURRENT_USER, sKeyName, 0, _
                                 KEY_SET_VALUE, hKey)
  lRetVal = SetValueEx(hKey, sValueName, lValueType, vValueSetting)
  RegCloseKey (hKey)
End Sub
 

[MLC]

Thanks for the reply.

I have just tried what you suggested - both the 'open' and the 'set' return a zero (no error) return value but it is still not doing anything to the registry!