## Virtual Device Driver Reference for OS/2

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### VDHArmContextHook Parameter - VDMHandle

VDMHandle (HVDM) DOS session handle. A value of -1 indicates a global context.

Hook routine interface:

     VOID HOOKENTRY fnarm(pRefData, pcrf)

          ENTRY    pRefData - Pointer to reference data

                   pcrf     - Pointer to client register frame

          EXIT     None

          USES     EAX, ECX, EDX, FS, GS, Flags

          CONTEXT  Task (global) or DOS session-task (local)

          NOTE     pcrf is valid only for local context hook handlers