API for Shared/MSI Interrupt
![](drex_api_for_shared_msi_interrupt_custom.png)
The wLevel returned by SetRtInterruptHandlerEx and the pointer to the respective parameter block is passed to the interrupt handler as a parameter.
Use the INtime Application wizard to generate the necessary code for shared interrupts and MSI interrupts.
Note: A call to EnterRtInterruptHandler is not required since INtime sets the context before the handler is entered.