| 摘要 |
Controlling the usage of a software component by an application program in an end user computer system includes obtaining an identifier of the application program by a controller computer system and generating a first password from the received application program identifier and an identifier of the component. The component, the component's identifier and the first password are communicated to the end user computer system. The component is registered with the application program as a "snap-in" or "plug-in" component. The application program generates a second password from the application program identifier and the received component identifier, compares the first password and the second password, and allows use of the "snapped-in" component by the application program on the end user computer system when the first password matches the second password.
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