HELP, ACAPI_Element_GetMemo error: APIERR

Author:mar_kq
Posted: Wed Dec 28, 2016 6:53 pm (GMT+1)

Akos Somorjai wrote:

Hi,

Could you please post the relevant part of your code?

That function usually gives that error code when it cannot build up the connection to ARCHICAD from the add-on. The API functions mostly run on the main thread of the application, triggered by some user event, so you cannot really throw API calls randomly at ARCHICAD; this won't work. Is this the case you refer to?
If so, then I can recommend two solutions: if you have a palette in ARCHICAD, then enable idle events for that, and call the API from that idle event handler (PanelIdle ()). If you don't have an interface, then use the ACAPI_Command_CallFromEventLoop () mechanism to get what you want.

I'm not sure how the handles allocated in the ACAPI_Element_GetMemo work with managed code, though.

Regards, Akos

Hi,

Thanks for the Reply. I guess you describe the Problem correctly. I''ll recap my process:
1- I have registered a Menu command (no Palette)
2- This Menu command calls the managed dll which instantiates a custom WPF Interface (also connecting to other applications)
3- An Event in the WPF is calling the "GetPropertiesSpace" function (below) which uses several API methods.
4- So far I experience issues Only with the ACAPI_Element_GetMemo function.

GetPropertiesSpace:

Code:

map<string, string> GetPropertiesSpace (API_Guid& guid, map<string, string> searchMap)
{
API_Element       element;
API_ElementMemo    memo;
GSErrCode       err;
map<string, string> targetMap = map<string, string>();

// GET ELEMENT ------------------------------------------------------------ //
BNZeroMemory (&element, sizeof (element));
element.header.typeID = API_ZoneID;
element.header.guid = guid;
err = ACAPI_Element_Get (&element);

// GET GUID
//WriteReport ("Room_GUID: %s", APIGuidToString (guid).ToCStr ().Get ());
GS::UniString strguid = APIGuidToString(guid).ToCStr().Get();
if(strguid != "")
   targetMap["GUID"] = strguid.ToCStr();

// GET MEMO ------------------------------------------------------------ //
BNZeroMemory (&memo, sizeof (memo));
if (err == NoError && element.header.hasMemo)
{
   err = ACAPI_Element_GetMemo (element.header.guid, &memo, APIMemoMask_AddPars);
   //err = ACAPI_Element_GetDefaults (&element, &memo);
   if (err != NoError)
   {
      ErrorBeep ("ACAPI_Element_Get/Memo (zone)", err);
   }
}

// GET ELEMENT PARAMETERS -- ROOM
if (&memo.params != NULL || *memo.params != NULL)
{
   ... get other params
}

return targetMap;
}

I have attempted to use the ACAPI_Command_CallFromEventLoop you suggested, with the example in the documentation, but so far with no avail.
When I call the Do_CommandCallFromEventLoop(); from the managed Code I get the same Error on the ACAPI_Command_CallFromEventLoop as with the GetMemo.

I also tried with a sample for the DWG IO Add-On but I get the same Error as before):

Code:

bool APIHandler::Test ()
{
// API_ModulID mdid = { developerID, localID };
API_ModulID mdid = { 1198731108, 1322668197 };    // DXF/DWG add-on
try {
   GSErrCode err = NoError;
   GSHandle paramHandle;
   err = ACAPI_Goodies (APIAny_InitMDCLParameterListID, &paramHandle, NULL);
   if (err == NoError) {
      err = ACAPI_Command_CallFromEventLoop (&mdid, 'GDCO', 1, paramHandle, false, CommandCallBackProc);
      if (err != NoError) {
WriteReport_Err ("ACAPI_Command_CallFromEventLoop failed", err);
ACAPI_Goodies (APIAny_FreeMDCLParameterListID, &paramHandle, NULL);
            return false;
      }
   }
   else{
      return false;
   }
}
catch (...) {
}
return true;
}

I also found a post that was perhaps related: http://archicad-talk.graphisoft.com/viewtopic.php?printertopic=1&t=50872&start=0&postdays=0&postorder=asc&vote=viewresult&sid=dab5266f1e6f57c7fa2d8c06641f8725
Am I moving in the right direction? Would you happen to have a small example of how to achieve this otherwise?

Thanks again.