private MIXERCONTROL GetLineControl(int controlType)
{
MIXERCONTROL mxc=new MIXERCONTROL();mxc.Bounds=new Volume();
MIXERLINECONTROLS mxlc=new MIXERLINECONTROLS();
IntPtr p=Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(MIXERCONTROL)));
Marshal.StructureToPtr(mxc,p,true);
mxlc.cbStruct = Marshal.SizeOf(typeof(MIXERLINECONTROLS));
mxlc.dwLineID =this.lineid;
mxlc.dwControlType =controlType;
mxlc.cControls = 1;
mxlc.cbmxctrl = Marshal.SizeOf(typeof(MIXERCONTROL));
mxlc.pamxctrl = p;
Mixer.mixerGetLineControls((int)mixer.Handle,ref mxlc,Mixer.MIXER_OBJECTF_HMIXER |Mixer.MIXER_GETLINECONTROLSF_ONEBYTYPE);
mxc=(MIXERCONTROL)Marshal.PtrToStructure(mxlc.pamxctrl,typeof(MIXERCONTROL));
return mxc;
}
public static extern int mixerGetLineControls( int hmxobj, ref MIXERLINECONTROLS pmxlc, uint fdwControls );