Waveform-Audio Input Data Types
The following data types are defined for waveform-audio input functions.
| Type | Description |
| HWAVEIN | Handle of an open waveform-audio input device. |
| WAVEFORMATEX | Structure that specifies the data formats supported by a particular waveform-audio input device. This structure is also used for waveform-audio output devices. |
| WAVEHDR | Structure used as a header for a block of waveform-audio input data. This structure is also used for waveform-audio output devices. |
| WAVEINCAPS | Structure used to inquire about the capabilities of a particular waveform-audio input device. |