typedef PMIXERLINECONTROLSW PMIXERLINECONTROLS;

typedef PMIXERLINECONTROLSA PMIXERLINECONTROLS;

typedef struct tMIXERLINECONTROLS {
    DWORD           cbStruct;       
    DWORD           dwLineID;       
    union {
        DWORD       dwControlID;    
        DWORD       dwControlType;  
    };
    DWORD           cControls;      
    DWORD           cbmxctrl;       
    LPMIXERCONTROL  pamxctrl;       
} MIXERLINECONTROLS, *PMIXERLINECONTROLS, FAR *LPMIXERLINECONTROLS;