function opens the given waveform-audio input device for recording.
| LPHWAVEIN phwi,
| UINT uDeviceID,
| LPWAVEFORMATEX pwfx,
| DWORD dwCallback,
| DWORD dwCallbackInstance,
| DWORD fdwOpen
Address filled with a handle identifying the open waveform-audio input device.
Use this handle to identify the device when calling other waveform-audio input
functions. This parameter can be NULL if WAVE_FORMAT_QUERY is specified for fdwOpen
Identifier of the waveform-audio input device to open. It can be either a
device identifier or a handle of an open waveform-audio input device.You can use
the following flag instead of a device identifier:
The function selects a waveform-audio input device capable of recording in the
Address of a WAVEFORMATEX
structure that identifies the desired format for recording waveform-audio
data. You can free this structure immediately after waveInOpen
Address of a fixed callback function, an event handle, a handle to a window,
or the identifier of a thread to be called during waveform-audio recording to
process messages related to the progress of recording. If no callback function is
required, this value can be zero. For more information on the callback
function, see waveInProc
User-instance data passed to the callback mechanism. This parameter is not
used with the window callback mechanism.
Flags for opening the device. The following values are defined:
parameter is an event handle.
parameter is a callback procedure address.
No callback mechanism. This is the default setting.
parameter is a thread identifier.
parameter is a window handle.
If this flag is specified, the ACM driver does not perform conversions on the
The function queries the device to determine whether it supports the given
format, but it does not open the device.
parameter specifies a waveform-audio device to be mapped to by the wave
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error
values include the following:
||Specified resource is already allocated.
||Specified device identifier is out of range.
||No device driver is present.
||Unable to allocate or lock memory.
||Attempted to open with an unsupported waveform-audio format.
Use the waveInGetNumDevs
function to determine the number of waveform-audio input devices present on
the system. The device identifier specified by uDeviceID
varies from zero to one less than the number of devices present. The
WAVE_MAPPER constant can also be used as a device identifier.
If you choose to have a window or thread receive callback information, the
following messages are sent to the window procedure or thread to indicate the
progress of waveform-audio input: MM_WIM_OPEN, MM_WIM_CLOSE, and MM_WIM_DATA.
If you choose to have a function receive callback information, the following
messages are sent to the function to indicate the progress of waveform-audio
input: WIM_OPEN, WIM_CLOSE, and WIM_DATA.
- Software for developers
Software for Android Developers
- More information resources
Unix Manual Pages
- Databases for Amazon shops developers
Amazon Categories Database
Browse Nodes Database