IDispatch::GetTypeInfoCount
This method retrieves the number of type information interfaces that an object provides, either 0 or 1.
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;
}
Requirements
| Runs on | Versions | Defined in | Include | Link to |
|---|---|---|---|---|
| Windows CE OS | 2.0 and later | Oaidl.h |
Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.
Last updated on Tuesday, July 13, 2004
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