>I am having difficulty with setting a registry key value using API calls.
>
>Let me try to explain this. In the registry under HKEY_CLASSES_ROOT, there are file extentions, such as ".dbc" and it has a DEFAULT value of "Visual.Foxpro.Database".
>
>When I try to set this with API calls (using registry.vcx in the FFC) I can set a value, but it is not the DEFAULT value. (It adds a Name and a value to the key underneath the default value.) Searching through MSDN, the only tip I could find is to add the Name as '' and supposedly it will add the value to the default entry, but this does not work.
>
>The reason I need it to be the default value is becuase that is what Windows looks for in a file association. If a FileType is not noted in the default value, it thinks that there is no association, even if the next entry down holds the file type.
>
>If anyone has been able to figure this out, please let me know. My next approach is to try this in C++, but I am very weak in that language.
>
Greg,

It's a problem with the registry class. The problem is shown below:

DO CASE
  CASE TYPE("This.nCurrentKey") # 'N' OR This.nCurrentKey = 0
    nErrCode = ERROR_BADKEY
  CASE TYPE("cValueName") # "C" OR TYPE("cValue") # "C"
    nErrCode = ERROR_BADPARM
  <b>CASE EMPTY(cValueName) OR EMPTY(cValue)
    nErrCode = ERROR_BADPARM</b>
  OTHERWISE
    nErrCode = ERROR_SUCCESS
ENDCASE

In order to set the default value, you have to pass an empty string as the value name parameter here

nErrCode = RegSetValueEx(This.nCurrentKey, <b>cValueName</b>, 0, lntype, cValue, nValueSize)

However, this code never executes because of the setting of the error in the case statement.