topic Re: How to fix COMPtr' problem? in ObjectARX Forum

How to fix COMPtr' problem?

D_D_K — Mon, 14 Jun 2021 13:06:03 GMT

Hi,

After running the following code, my cad crashes at the end.

because there are some custom functions with parameter IAcadBlocksPtr, so I used it like below:

CComQIPtr<IAcadApplication> pApp(acedGetIDispatch(FALSE)); CComPtr<IAcadDocument> pDoc; //getcurrent doc IAcadBlocksPtr pblks; hR = pDoc->get_Blocks(pblks); //do something Ok pblks.Release(); HRESULT hr = pDoc->Close(vb); //Ok pDoc.Release(); return true;// <---crash;

How do I avoid this?

Re: How to fix COMPtr' problem?

Alexander.Rivilis — Mon, 14 Jun 2021 13:21:39 GMT

1. pDoc is not initilaize

2. pDoc release twice as far as you call pDoc.Release() and destructor of pDoc also call pDoc.Release()

Re: How to fix COMPtr' problem?

D_D_K — Mon, 14 Jun 2021 13:37:05 GMT

Hi sir,

the reason I call pDoc.release(); because when using the original code below -> cad crashes first.

I'm not sure where is wrong. these variables are initialized and working correctly.

CComQIPtr<IAcadApplication> pApp(acedGetIDispatch(FALSE)); CComPtr<IAcadDocument> pDoc; pApp->get_ActiveDocument(&pDoc); IAcadBlocksPtr pblks; hR = pDoc->get_Blocks(pblks); //do something Ok pblks.Release(); HRESULT hr = pDoc->Close(vb); //success return true;// <---crash;

Re: How to fix COMPtr' problem?

Alexander.Rivilis — Mon, 14 Jun 2021 13:42:57 GMT

Are you trying to close active document?

It is look like error not in this code.

Re: How to fix COMPtr' problem?

D_D_K — Mon, 14 Jun 2021 14:55:58 GMT

Thanks sir,

I have reviewed my code. the error comes from a subroutine.

Remove it and now the code works fine.