topic Pointer Array Length in Archicad C++ API

Pointer Array Length

poco2013 — Tue, 14 Sep 2021 07:39:46 GMT

This is a novice question so maybe someone can help!!

I am using Goodies(APIAny_ActParametersID, &getParams, Nullptr);

getParams->params (API_AddParType) returns a pointer to a list of the parameters in a Library Part

How do I get the number parameters pointed to in order to iterate through the list and find the parameter I'm interested in?? I tried sizeof and just got garbage , so doing something wrong?

Thanks

Re: Pointer Array Length

Viktor Kovacs — Mon, 26 Apr 2021 14:22:22 GMT

This one is a bit tricky. Here is the relevant code from Element_Test Add-On:


API_GetParamsType getParams;
BNZeroMemory (&getParams, sizeof (API_GetParamsType));
err = ACAPI_Goodies (APIAny_GetActParametersID, &getParams);
if (err == NoError) {
	UInt32 nParams = BMGetHandleSize ((GSHandle) getParams.params) / sizeof (API_AddParType);
	for (UInt32 ii = 0; ii < nParams; ++ii) {
		const API_AddParType& actParam = (*getParams.params)[ii];
		DBPrintf ("%-3u. param: \"%s\" (%s)\n", ii, actParam.name, (actParam.flags & API_ParFlg_Disabled) != 0 ? "disabled" : "");
	}
}
ACAPI_Goodies (APIAny_CloseParametersID);
ACAPI_DisposeAddParHdl (&getParams.params);

Re: Pointer Array Length

poco2013 — Mon, 26 Apr 2021 16:41:47 GMT

Thanks Viklor:

UInt32 nParams = BMGetHandleSize ((GSHandle) getParams.params) / sizeof (API_AddParType);

was exactly what I was looking for. Don't know how I missed it but I did.

Thanks again