QNX Developer Support
snd_ctl_open()
Create a connection and handle to the specified control device
Synopsis:
#include <sys/asoundlib.h> int snd_ctl_open( snd_ctl_t **handle, int card );
Arguments:
- handle
- A pointer to a location in which snd_ctl_open() stores a handle for the card, which you need to pass to the other snd_ctl_* functions.
- card
- The card number.
Library:
libasound.a
Description:
The snd_ctl_open() function creates a new handle and opens a connection to the control interface for sound card number card (0-N). This handle may be used in all of the other snd_ctl_*() calls.
Returns:
Zero on success, or a negative value if an error occurs.