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I read in a book that CreateInstance is a MUST for a source filter in directshow,but when I see this I doubt whetger it’s true:
CFactoryTemplate g_Templates[] =
{
{
L"Virtual Cam",
&CLSID_VirtualCam,
CVCam::CreateInstance,
NULL,
&AMSFilterVCam
},
I can name the CreateInstance static method arbitrarily,like CreateInstance22,right or wrong?
Right.
This field is a pointer to a function of type
CUnknown* (*)(LPUNKNOWN pUnk,
HRESULT* phr
);
So any function of that layout can be used.