Hi Everyone,
I am trying to write an MDL that creates and attaches certain Attributes to new created graphic Elements into an Access MDB-Database. Therefore I want to make sure, before the creation of new Elements starts, that the correct Database is attached. To have an overview, that the correct MDB is attached to the DGN-file there are the following 3 files with same Name created, before the MDL starts:
- <filename>.dgn (DGN-file)
- <filename>.mdb (Access MDB-Database)
- <filename>.udl (Universal-Data-Link-file)
Here is a part of the Code, that should do this:
int attachDatabaseUDL
(
void
)
{
char dgnDevice[MAXFILENAMELENGTH]="\0"; // DGN-Device
char dgnPath[MAXFILENAMELENGTH]="\0"; // DGN-Path
char dgnName[MAXFILENAMELENGTH]="\0"; // DGN-Name (WITHOUT Suffix!)
char udl_file[MAXFILENAMELENGTH]="\0"; // UDL-Filename
int ret=0; // Return-Value
// Reading Name-parts of actual Design-File
mdlFile_parseName (tcb->dgnfilenm, dgnDevice, dgnPath, dgnName, NULL);
// Creation of UDL-Name
strcpy (udl_file, dgnDevice);
strcat (udl_file, ":");
strcat (udl_file, dgnPath);
strcat (udl_file, dgnName);
strcat (udl_file, ".udl\0");
// Attaching Database by use of UDLl-file
ret=mdlDB_activeDatabase(udl_file);
// Information about Success
if (ret==SUCCESS) mdlOutput_status ("DB attached");
else mdlOutput_status ("ERROR! DB NOT attached!");
return ret;
}
When I call this function the first time I opened the DGN-file I get an error-message
"Datenbank-Server nicht aktiv" (= Database-Server is not active)
The same happens if I key-in "DB=<full Path>\<filename>.udl" the first time. If I choose via menu "Create Database-Connection" another udl-file, detach the database afterwards and call this function again (or repeat the mentioned key-in), than it works.
So my question is, with which function can make the database-server active, so that the function works, or is there any other reason for this behaviour?
Many thanks for your help,
Ines Wieland
