hab (HAB) - input

      Anchor-block handle.

    pswblkBlock (PSWBLOCK) - in/out

      Switch entries block.

      Contains a description of all the entries in the current switch list. This is held in a SWBLOCK structure, which has a count of the number of switch list entries, plus a record for each entry containing data such as the process and session identities, the icon handle, and the window handle for the running program.

      NULL

        No information returned; the return parameter however contains the total number of switch list entries.
      Other
        Switch entries block.

      ulLength (ULONG) - input

        Maximum length of data returnable in bytes.

        This is the maximum length in bytes of the data that can be returned in the pswblkBlock parameter.

      • No information returned, however the return parameter contains the total number of switch list entries.

        Other

          Maximum length of data returnable.

        ulCount (ULONG) - returns

          Total number of switch list entries present in the system.

        • Error occurred Other
            Total number of switch list entries present in the system.

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