Opening and Closing drawings with ARX

Anonymous — Thu, 04 Apr 2002 10:32:45 GMT

I am currently working on a project that will need to create a new drawing,
add some stuff, and the save it. I will be doing this multiple times (in a
loop) and really need to get some insight from the discussion group.

What functions need to be used to do this. appContextNewDocument() seems to
be a good idea but I don't know how to use it properly even after reading
the documentation.

Thanks,
Matt

Re: Opening and Closing drawings with ARX

Anonymous — Fri, 05 Apr 2002 03:03:00 GMT

Matt,

You may use the COM API to do that.
It will allows you to manage drawings (open / close / save), perform zoom
operations, create entities, customize menus and toolbars and much more.

Here is a little example:

// Utility function to build a double array
HRESULT GetVariantFromDblArray(VARIANT* pVal, const double pt[3])
{
pVal->vt = VT_ARRAY | VT_R8;

SAFEARRAYBOUND rgsaBound;
rgsaBound.lLbound = 0L;
rgsaBound.cElements = 3;

pVal->parray = SafeArrayCreate(VT_R8, 1, &rgsaBound);
if (! pVal->parray)
return E_OUTOFMEMORY;

HRESULT hr;
for (long i = 0; i < 3; i++)
if ((hr = SafeArrayPutElement(pVal->parray, &i, (void*)&pt)) != S_OK)
return hr;
return S_OK;
}

// Performs ZOOM with the corners of zoom window
void ZoomDWG(AcGePoint3d& pti,AcGePoint3d& ptj)
{
CWinApp* pWinApp = acedGetAcadWinApp();
if(!pWinApp) return;
CComPtr pDisp = pWinApp->GetIDispatch(TRUE);
if(!pDisp) return;

CComPtr pComApp;
HRESULT hr = pDisp->QueryInterface(IID_IAcadApplication,(void**)&pComApp);
if(FAILED(hr)) return;

CComPtr pDoc;
hr = pComApp->get_ActiveDocument(&pDoc);
if(FAILED(hr)) return;

VARIANT lowerLeft,upperRight;
double pti_[3] = {pti,pti,pti};
double ptj_[3] = {ptj,ptj,ptj};

GetVariantFromDblArray(&lowerLeft, pti_);
GetVariantFromDblArray(&upperRight, ptj_);

pComApp->ZoomWindow(lowerLeft,upperRight);
}

To get more information about what is possible to do, see the VBA help on
AutoCAD and see the COM Automation subject on VC++ Help.

Regards,
Fernando.

"Matt Reath" wrote in message
news:92CDBD5ADE601ED300C18C1039457B4A@in.WebX.maYIadrTaRb...
> I am currently working on a project that will need to create a new
drawing,
> add some stuff, and the save it. I will be doing this multiple times (in
a
> loop) and really need to get some insight from the discussion group.
>
> What functions need to be used to do this. appContextNewDocument() seems
to
> be a good idea but I don't know how to use it properly even after reading
> the documentation.
>
>
> Thanks,
> Matt
>
>

topic Re: Opening and Closing drawings with ARX in ObjectARX Forum

Opening and Closing drawings with ARX

Re: Opening and Closing drawings with ARX