This method retrieves the number of type information interfaces that an object provides, either 0 or 1.
At a Glance
Header file: | Oaidl.h |
Windows CE versions: | 2.0 and later |
Syntax
HRESULT GetTypeInfoCount( unsigned int FAR* pctinfo );
Parameters
pctinfo
Pointer to a location that receives the number of type information interfaces provided by the object. If the object provides type information, this number is 1; otherwise the number is 0.
Return Values
One of the values described in the following table is returned.
Value | Description |
S_OK | Success. |
E_NOTIMPL | Failure. |
Remarks
The function may return zero, which indicates that the object does not provide any type information. In this case, the object may still be programmable through IDispatch, but does not provide type information for browsers, compilers, or other programming tools that access type information. This can be useful for hiding an object from browsers or for preventing early binding on an object.
Example
This code from the Lines sample file Lines.cpp implements the GetTypeInfoCount member function for the CLines class (ActiveX or OLE object).
STDMETHODIMP
CLines::GetTypeInfoCount(UINT FAR* pctinfo)
{
*pctinfo = 1;
return NOERROR;
}