topic Re: changing the index of library part does not work in Archicad C++ API

changing the index of library part does not work

Martin Walter — Wed, 15 Sep 2021 10:34:24 GMT

I'm trying to change the library part index of an element by this code:



API_Element elementMask;
BNZeroMemory(&elementMask, sizeof(API_Element));

ACAPI_ELEMENT_MASK_SET(elementMask, API_WindowType, openingBase.libInd);
element.window.openingBase.libInd = iLibIndex;

const GSErrCode error = ACAPI_Element_ChangeParameters({ element.header.guid }, &element, nullptr, &elementMask);

const GSErrCode errorChange = ACAPI_Element_Change(&element, &elementMask, nullptr, 0UL, false);

But I get the result APIERR_BADPARS for both functions ACAPI_Element_ChangeParameters and ACAPI_Element_Change.

Re: changing the index of library part does not work

Ralph Wessel — Fri, 10 Apr 2020 08:28:47 GMT

Are you attempting to change the element within an active undo session? Otherwise, what error is returned?

Re: changing the index of library part does not work

Martin Walter — Fri, 10 Apr 2020 13:02:27 GMT

Yes I use the command in ACAPI_CallUndoableCommand.

The returned error is APIERR_BADPARS.

Re: changing the index of library part does not work

Martin Walter — Sun, 19 Apr 2020 12:46:37 GMT

Any ideas?

Re: changing the index of library part does not work

Ralph Wessel — Sun, 19 Apr 2020 17:57:46 GMT

I think that changing just the index of the library part may not be sufficient. You probably also need to set the correct parameters for that object – possibly that's what the error is indicating.

You could get the correct parameters by loading the default from the object with ACAPI_LibPart_GetParams. The memo data retrieved with this method can be directly used to update the target element, but you might want to use ACAPI_Element_Change in order to write the changes to both the element and memo data.

Re: changing the index of library part does not work

Martin Walter — Mon, 25 May 2020 14:30:58 GMT

Using the element memo instead of a nullptr was the correct hint. Thanks a lot!