Format  Sint32 CDC_SetFiltCon (Sint32 filtno, Sint32 cflag, Sint32 bufno, Sint32 flnout)
 Input  filtno: Aperture number
:  cflag: Aperture connection flag (lower 8 bits are valid)
:  bufno: Buffer partition number to which the true output connector is connected (CDC_NUL_SEL: Disconnected)
:  flnout: Narrowing number for connecting the fake output connector (CDC_NUL_SEL: Disconnect)
 Output  None
 Function value  Returns an error code.
 End flag  ESEL flag
 Functions  Set the following connection destinations for the aperture. If CDC_NUL_SEL is specified, the connection is disconnected.
, , true output connector → buffer partition input connector
 -False output connector-> Other aperture input connector 

 
  (1) Aperture connection flag  

 Format  Sint32 CDC_GetFiltCon (Sint32 filtno, Sint32 * bufno, Sint32 * flnout)
 Input  filtno: Aperture number
 Output  bufno: Buffer partition number to which the true output connector is connected (CDC_NUL_SEL: Not connected)
:  flnout: Aperture number for connecting the fake output connector (CDC_NUL_SEL: Not connected)
 Function value  Returns an error code.
 Function  Gets the aperture connection destination. If not connected, CDC_NUL_SEL is returned.