topic GSHandle to structure [SOLVED] in Archicad C++ API

GSHandle to structure [SOLVED]

ReignBough — Tue, 01 Aug 2023 16:58:34 GMT

I have a structure and I saved it on attribute user data using:


API_AttributeUserData user_data;
user_data.dataVersion = MY_ATTS_VERS;
user_data.platformSign = GS::Win_Platform_Sign;
user_data.dataHdl = BMAllocateHandle(sizeof(MyUserData), ALLOCATE_CLEAR, 0);
GSErr ud_err = BMPtrToHandle(&UserData, &user_data.dataHdl, sizeof(MyUserData));
ACAPI_Attribute_SetUserData(&UDHead, &user_data);

UserData is the user data to be saved, and UDHead has the typeID and index.

When I use ACAPI_Attribute_GetUserData(), I am able to get the version and platform sign. But I am lost in retrieving the saved user data.

Help anyone?

>> ArchiCAD 17

Re: GSHandle to structure

Tibor Lorantfy — Thu, 17 Oct 2013 12:17:20 GMT

Hi,

I think it should work this way:

err = ACAPI_Attribute_GetUserData (&attribute.header, &userData); 
if (err == NoError) { 
	MyUserData** myUserData = reinterpret_cast<MyUserData**> userData.dataHdl; 
	// now you can use the userdata 
	// after working with it, don't forget to free the handle! 
	BMKillHandle (&(userData.dataHdl)); 
} else { 
	ACAPI_WriteReport ("Error: ACAPI_Attribute_GetUserData", false); 
}

Regards,
Tibor

Re: GSHandle to structure

ReignBough — Fri, 18 Oct 2013 01:47:15 GMT

Thanks Tibor.