DispGetIDsOfNames - OLE Programmer's Reference

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DispGetIDsOfNames

ptinfo, rgszNames, cNames, rgdispid)
ITypeInfo * ptinfo
OLECHAR FAR* FAR* rgszNames
unsigned int cNames
DISPID FAR* rgdispid

Uses type information to convert a set of names to DISPIDs. This is the recommended implementation of IDispatch::GetIDsOfNames.

Parameters
ptinfo
Pointer to the type information for an interface. Note that this type information is specific to one interface and language code, so it is not necessary to pass an IID or LCID to this function.

rgszNames
An array of name strings, which can be the same array passed to DispInvoke in the DISPPARAMS structure. If cNames is greater than one, the first name is interpreted as a method name and subsequent names are interpreted as parameters to that method.

cNames
The number of elements in rgszNames.

rgdispid

Pointer to an array of DISPIDs to be filled in by this function. The first ID corresponds to the method name; subsequent IDs are interpreted as parameters to the method.

Return Value
The SCODE obtained from the returned HRESULT is one of the following:

SCODE	Meaning
S_OK	The interface is supported.
E_INVALIDARG	One of the arguments is invalid.
DISP_E_UNKNOWNNAME	One or more of the given names were not known. The returned array of DISPIDs will contain DISPID_UNKNOWN for each entry that corresponds to an unknown name.
Other returns	Any of the ITypeInfo::Invoke errors may also be returned.

Example
This code from the Lines sample file POINTS.CPP implements the member function GetIDsOfNames for the CPoints class using DispGetIDsOfNames.

STDMETHODIMP

CPoints::GetIDsOfNames(

REFIID riid,

char FAR* FAR* rgszNames,

UINT cNames,

LCID lcid,

DISPID FAR* rgdispid)

{

return DispGetIDsOfNames(m_ptinfo, rgszNames, cNames, rgdispid);

}

See Also
CreateStdDispatch, IDispatch::GetIDsOfNames

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