Lists
The list
controls provide single-select or multiple-select states for complex audio
lines. These controls use the MIXERCONTROLDETAILS_BOOLEAN structure to retrieve and
set control properties. The MIXERCONTROLDETAILS_LISTTEXT structure is also used to
retrieve all text descriptions of a multiple-item control. The following table
describes the types of list controls.
|
Control |
Description |
|
Single-select |
Restricts
the control selection to one item at a time. Unlike the multiplexer control,
this control can be used to control more than audio source lines. For
example, you could use this control to select a low-pass filter from a list of
filters supported by a mixer device. |
|
Multiplexer
(MUX) |
Restricts
the line selection to one source line at a time. |
|
Multiple-select |
Allows the
user to select multiple items from a list simultaneously. Unlike the mixer
control, the multiple-select control can be used to control more than audio
source lines. |
|
Mixer |
Allows the
user to select source lines from a list simultaneously. |