Catia V5 Automation from C++

[dchabaud]

Hello,
I am trying to use Catia V5 Automation from a C++ program. I already succeeded in creating a Pad and a Sweep from an existing sketch. I am now trying to create a spline in an empty sketch.

After getting the sketch, I create 5 control points with success (they appear in the Catia tree). But I failed with the call to CreateSpline because it takes a SAFEARRAY but I don't know what data type to put inside...

		// Get Sketch
		BSTR MySketchName = SysAllocString(L"Sketch.1");
		INFITF::CATBaseDispatchPtr pCatiaSketchDispatchPtr;
		pCatiaSketchesPtr->GetItem(&MySketchName, &pCatiaSketchDispatchPtr);
		MECMOD::SketchPtr pCatiaSketchPtr = pCatiaSketchDispatchPtr;


		// Get the 2D factory
		MECMOD::Factory2DPtr pCatiaFactory2DPtr;
		pCatiaSketchPtr->get_Factory2D(&pCatiaFactory2DPtr);

		// Create control points
		const long nb = 5;
		MECMOD::ControlPoint2DPtr pControlPoint2DPtr[nb];
		hrResult = pCatiaFactory2DPtr->CreateControlPoint(  0.0,  100.0, &(pControlPoint2DPtr[0]));
		hrResult = pCatiaFactory2DPtr->CreateControlPoint(-50.0,   50.0, &(pControlPoint2DPtr[1]));
		hrResult = pCatiaFactory2DPtr->CreateControlPoint(-60.0,    0.0, &(pControlPoint2DPtr[2]));
		hrResult = pCatiaFactory2DPtr->CreateControlPoint(-50.0,  -50.0, &(pControlPoint2DPtr[3]));
		hrResult = pCatiaFactory2DPtr->CreateControlPoint(  0.0, -100.0, &(pControlPoint2DPtr[4]));
		for (long i = 0; i < nb; i++)
			pControlPoint2DPtr[i]->put_ReportName(i + 20);

		// Store control points in a COM safearray
		SAFEARRAY* saPoints;
		SAFEARRAYBOUND  Bound;
		Bound.lLbound	= 0;
		Bound.cElements	= nb;
		saPoints = SafeArrayCreate(VT_UINT_PTR, 1, &Bound);
		for (LONG i = 0; i < (LONG)nb; i++)
		{
			hrResult = SafeArrayPutElement(saPoints, &i, &(pControlPoint2DPtr[i]));
		}

		// Create a spline with the control points
		MECMOD::Spline2DPtr pSpline2DPtr;
		hrResult = pCatiaFactory2DPtr->CreateSpline(saPoints, &pSpline2DPtr);

I tried with VBA and there is no problem, the control points are stored in a Dim array then the array is directly pass to CreateSpline.
Any idea?
Thanks

 

[Little Cthulhu]

VT_DISPATCH?

 

[dchabaud]

Thanks, I already tried VT_DISPATCH, SafeArrayPutElement still returns ok but the Spline is not ok.
As with VT_UINT_PTR I got an invalid Spline in the Catia tree and control points stay orphan.

 

[Little Cthulhu]

iPoles
An array of CATIAPoint2D forming the poles of the b-spline.

 

[dchabaud]

This is what:

hrResult = SafeArrayPutElement(saPoints, &i, &(pControlPoint2DPtr[i]));

is supposed to do...