AddByCenterRadius, can the last parameter be NULL in C++?

[oransen]

I've seen some code like this

CComPtr<SketchCircle> pSketchCircle;
pSketch->SketchCircles->AddByCenterRadius(pCenter,kDiam/2.0,&pSketchCircle);

But if I don't care about getting the actual object created can I pass NULL instead of &pSketchCircle?

[xiaodong_liang · Accepted solution]

Hi,

I do not think so. But if you do not need the circle object, you could use the other function MethodXXX.

[oransen]

Actually I've just looked at the intellisense function prototype, and the last parameter is a default parameter and the default parameter is 0.

So yes, if you don't pass in a pointer to a circle then the last parameter is NULL by default.

[xiaodong_liang]

Hi,

yes, you are correct. The param in this case can be NULL. I confused with others which require the param to be initialized.