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ICreateTypeInfo::LayOut method (oaidl.h)

  • Article

Assigns VTBL offsets for virtual functions and instance offsets for per-instance data members, and creates the two type descriptions for dual interfaces.

Syntax

HRESULT LayOut();

Return value

This method can return one of these values.

Return code Description
S_OK
Success.
E_OUTOFMEMORY
Insufficient memory to complete the operation.
E_ACCESSDENIED
 Cannot write to the destination.
STG_E_INSUFFICIENTMEMORY
Insufficient memory to complete the operation.
TYPE_E_UNDEFINEDTYPE
 Bound to unrecognized type.
TYPE_E_INVALIDSTATE
 The state of the type library is not valid for this operation.
TYPE_E_WRONGTYPEKIND
 Type mismatch.
TYPE_E_ELEMENTNOTFOUND
 The element cannot be found.
TYPE_E_AMBIGUOUSNAME
 More than one item exists with this name.
TYPE_E_SIZETOOBIG
 The type information is too long.
TYPE_E_TYPEMISMATCH
 Type mismatch.

Remarks

LayOut also assigns member ID numbers to the functions and variables, unless the TYPEKIND of the class is TKIND_DISPATCH. Call LayOut after all members of the type information are defined, and before the type library is saved.

Use ICreateTypeLib::SaveAllChanges to save the type information after calling LayOut. Other members of the ICreateTypeInfo interface should not be called after calling LayOut.

Note  Different implementations of ICreateTypeLib::SaveAllChanges or other interfaces that create type information are free to assign any member ID numbers, provided that all members (including inherited members), have unique IDs. For examples, see ICreateTypeInfo2.
 

Requirements

Requirement Value
Target Platform Windows
Header oaidl.h

See also

ICreateTypeInfo