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NF:oaidl.IDispatch.GetTypeInfoCount |
IDispatch::GetTypeInfoCount (oaidl.h) |
Retrieves the number of type information interfaces that an object provides (either 0 or 1). |
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automat\idispatch_gettypeinfocount.htm |
automat |
da876d53-cb8a-465c-a43e-c0eb272e2a12 |
12/05/2018 |
GetTypeInfoCount, GetTypeInfoCount method [Automation], GetTypeInfoCount method [Automation],IAccessible interface, GetTypeInfoCount method [Automation],IDispatch interface, IAccessible interface [Automation],GetTypeInfoCount method, IAccessible::GetTypeInfoCount, IDispatch interface [Automation],GetTypeInfoCount method, IDispatch.GetTypeInfoCount, IDispatch::GetTypeInfoCount, _oa96_IDispatch::GetTypeInfoCount, automat.idispatch_gettypeinfocount, oaidl/IAccessible::GetTypeInfoCount, oaidl/IDispatch::GetTypeInfoCount |
oaidl.h |
Windows |
OaIdl.idl |
Windows |
19H1 |
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Retrieves the number of type information interfaces that an object provides (either 0 or 1).
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.
This method can return one of these values.
| Return code | Description |
|---|---|
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Success. |
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Failure. |
The method 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 or a VTBL, but does not provide run-time type information for browsers, compilers, or other programming tools that access type information. This can be useful for hiding an object from browsers.
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 * pctinfo)
{
if (pctinfo == NULL) {
return E_INVALIDARG;
}
*pctinfo = 1;
return NOERROR;
}