topic Re: Smartpointer question? in ObjectARX Forum

Smartpointer question?

D_D_K — Tue, 23 Mar 2021 19:32:39 GMT

Hi,

can I combine AcDbObjectPointer and AcDbVoidPtrArray ?

The problem I'm having is the pointer doesn't seem to be valid after the end of the function.

How do I use smartpointer in this case? because I want to avoid delete pointer.

bool Dosomething(AcDbCircle* c,...); // void myfunc(AcDbVoidPtrArray &vrr){ AcDbObjectPointer<CIR> cptr; cptr.create(); CIR* cir = cptr.object(); if (Dosomething(cir,...)) vrr.append(cir); }

Thanks for the explanation.

Re: Smartpointer question?

Alexander.Rivilis — Tue, 23 Mar 2021 19:46:57 GMT

@D_D_K wrote:

Hi,

can I combine AcDbObjectPointer and AcDbVoidPtrArray ?

The problem I'm having is the pointer doesn't seem to be valid after the end of the function.

How do I use smartpointer in this case? because I want to avoid delete pointer.

bool Dosomething(AcDbCircle* c,...); // void myfunc(AcDbVoidPtrArray &vrr){ AcDbObjectPointer<CIR> cptr; cptr.create(); CIR* cir = cptr.object(); if (Dosomething(cir,...)) vrr.append(cir); }

Thanks for the explanation.

bool Dosomething(AcDbCircle* c,...); // void myfunc(AcDbVoidPtrArray &vrr){ AcDbObjectPointer<CIR> cptr; cptr.create(); CIR* cir = cptr.object(); if (Dosomething(cir,...)) { CIR *cir1 = NULL; cir.release(cir1); // <- prevent from destructor vrr.append(cir1); }

Other way is not using smart pointer in this case.

Re: Smartpointer question?

D_D_K — Tue, 23 Mar 2021 21:18:18 GMT

Thank sir!

I got it. maybe I'll save it for other cases. 🗯

Re: Smartpointer question?

trithuongle — Sun, 26 Jun 2022 02:29:30 GMT

Good morning , I have a question .

With the above sample , when AcDbObjectPtrArray vrr go out of its scope in main function , do we need to delete or close its member 's pointers ?

I also have the similar code in which i'm using AcDbObjectPtrArray.

Thanks in advance !

AcDbVoidPtrArray lineObjs; AcDbObjectPointer<AcDbLine> tempLine; AcDbObjectId oId; ads_point startPnt, nextPnt; acedGetPoint(NULL, _T("\nStart point : "), startPnt); for (int i = 0; i < 10; i++) { acedGetPoint(startPnt, _T("\nNext point : "), nextPnt); tempLine.create(); tempLine->setStartPoint(asPnt3d(startPnt)); tempLine->setEndPoint(asPnt3d(nextPnt)); tempLine->setLayer(_T("1")); addToCurSpace(oId, tempLine); AcDbLine* pTemp = nullptr; tempLine.release(pTemp); lineObjs.append(pTemp); acdbPointSet(nextPnt, startPnt); } acutPrintf(_T("\nNumber of lines : %d"), lineObjs.length()); //<- do we need to delete or close AcDbVoidPtrArray 's member pointer here ? //If not does it cause memory leak ?