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.
|
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