IUnknown

Abstract: A new re-exploiture method in SolidWorks is advanced.That is using VC + + as programming lan- guage,startup SolidWorks and obtaining the ISolidWorks interface object by means of component object model (COM)calling out processing component.Re-exploiture is carried out by IUnknown interface and ISolid- Works object.Taking the saddle mast of the gantry crane as an example,the idiographic process that created a parameterized part and assembly is introduced.The part and assembly can be created dynamically by changing parameters based on this method.The seriation design can be realized accordingly,and period of system's ex- ploitation is shortened.

Abstract: An outer COM object can be provided with privileged access to protected functionality in an inner COM object. An inner COM object can offer a custom protected interface to an outer COM object by creating a new inner internals COM object that is not available to a calling application or by creating a new extension IUnknown interface that can be used to access the protected content. An outer COM object can override behavior in an inner COM object. An inner COM object can offer access to custom behavior to an outer COM object by creating a new inner internals COM object that is not available to a calling application. The new inner internals COM object can implement a new interface that provides access to the customized (override) content or can create a new extension IUnknown interface that can be used to provide access to the customized (override) content.

Abstract: We present in this paper the preliminary design of a module system based on a notion of components such as they are found in COM. This module system is inspired from that of Standard ML, and features first-class instances of components, first-class interfaces, and interface-polymorphic functions, as well as allowing components to be both imported from the environment and exported to the environment using simple mechanisms. The module system automates the memory management of interfaces and hides the IUnknown interface and QueryInterface mechanisms from the programmer, favoring instead a higher-level approach to handling interfaces.