hi,i have this table: CREATE TABLE pois( uid integer not null, name VARCHAR(128), catcode VARCHAR(32) not null, catname VARCHAR(32), others VARCHAR(32) ); SELECT AddGeometryColumn('pois', 'location', 4214, 'POINT', 2);
and then in my codes,i use this invoke to get location column in tuple: tuple = heap_getnext(pHeapScanDesc,ForwardScanDirection); datum = heap_getattr(tuple,6,pRawRelation->rd_att,&isnull); then on the next,how to write to get Point? is this right? Point *p = isnull?NULL:(Point *)(PG_DETOAST_DATUM(datum)); i've tried it,but it seems not work. thanks a lot. peng
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