c# to unmanaged c++ and managed c++

[kang0kid]

I have the following code in C#:
Visio.Shape lifeLineMaster;
Visio.Document aDoc;
Visio.Shape newLifeLine;
lifeLineMaster = VisioStencil.Masters["Lifeline"].Shapes[1];
newLifeLine = aDoc.Pages[1].Drop(lifeLineMaster, 5, 5);

How do I change this to managed and unmanaged c++. I've tried various
things, but continue getting compiler errors.

Thanks