Performance Attributes

You can use the following attributes in an IDL file to reduce the size of the stub code or otherwise improve performance:

Attribute	Usage
ignore	Designates that a pointer contained in a structure or union and the object indicated by the pointer is not to be transmitted
local	Designates a function that is local to the application for which MIDL does not need to generate stub code.
wire_marshal	Defines a data type as a simpler type for transmission over a network and allows you to implement marshaling and unmarshaling routinesfor the type.