## Virtual Device Driver Reference for OS/2

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### VDHQueryVIRQ - Format

This function returns information about the virtual mask, interrupt request flag, interrupt in-service flag, and pending virtual device driver Interrupt Return (IRET) handlers for the specified IRQ, device, or DOS session.

    #include mvdm.h

    HVDM     VDMHandle;  /*  IRQ handle from DOS session handle */

    HIRQ     IRQHandle;  /*  IRQ handle from VDHOpenVIRQ */

    ULONG    rc;

    rc = VDHQueryVIRQ(VDMHandle, IRQHandle);