winmm topic

Windows Multimedia API

Microsoft Windows multimedia support enables applications to use sound and video.

Functions

mciGetDeviceID(PCWSTR pszDevice) → int

Retrieves the device identifier corresponding to the name of an open device.

mciGetDeviceIDFromElementID(int dwElementID, PCWSTR lpstrType) → int

Retrieves the MCI device identifier corresponding to an element identifier.

mciGetErrorString(int mcierr, PWSTR pszText, int cchText) → bool

Retrieves a string that describes the specified MCI error code.

mciSendCommand(int mciId, int uMsg, int? dwParam1, int? dwParam2) → int

Sends a command message to the specified MCI device.

mciSendString(PCWSTR lpstrCommand, PWSTR? lpstrReturnString, int uReturnLength, HWND? hwndCallback) → int

Sends a command string to an MCI device.

midiConnect(HMIDI hmi, HMIDIOUT hmo) → int

Connects a MIDI input device to a MIDI thru or output device, or connects a MIDI thru device to a MIDI output device.

midiDisconnect(HMIDI hmi, HMIDIOUT hmo) → int

Disconnects a MIDI input device from a MIDI thru or output device, or disconnects a MIDI thru device from a MIDI output device.

midiInAddBuffer(HMIDIIN hmi, Pointer<MIDIHDR> pmh, int cbmh) → int

Sends an input buffer to a specified opened MIDI input device.

midiInClose(HMIDIIN hmi) → int

Closes the specified MIDI input device.

midiInGetDevCaps(int uDeviceID, Pointer<MIDIINCAPS> pmic, int cbmic) → int

Determines the capabilities of a specified MIDI input device.

midiInGetErrorText(int mmrError, PWSTR pszText, int cchText) → int

Retrieves a textual description for an error identified by the specified error code.

midiInGetID(HMIDIIN hmi, Pointer<Uint32> puDeviceID) → int

Gets the device identifier for the given MIDI input device.

midiInGetNumDevs() → int

Retrieves the number of MIDI input devices in the system.

midiInMessage(HMIDIIN? hmi, int uMsg, int? dw1, int? dw2) → int

Sends a message to the MIDI device driver.

midiInOpen(Pointer<Pointer<NativeType>> phmi, int uDeviceID, int? dwCallback, int? dwInstance, MIDI_WAVE_OPEN_TYPE fdwOpen) → int

Opens a specified MIDI input device.

midiInPrepareHeader(HMIDIIN hmi, Pointer<MIDIHDR> pmh, int cbmh) → int

Prepares a buffer for MIDI input.

midiInReset(HMIDIIN hmi) → int

Stops input on a given MIDI input device.

midiInStart(HMIDIIN hmi) → int

Starts MIDI input on the specified MIDI input device.

midiInStop(HMIDIIN hmi) → int

Stops MIDI input on the specified MIDI input device.

midiInUnprepareHeader(HMIDIIN hmi, Pointer<MIDIHDR> pmh, int cbmh) → int

Cleans up the preparation performed by the midiInPrepareHeader function.

midiOutCacheDrumPatches(HMIDIOUT hmo, int uPatch, Pointer<Uint16> pwkya, int fuCache) → int

Requests that an internal MIDI synthesizer device preload and cache a specified set of key-based percussion patches.

midiOutCachePatches(HMIDIOUT hmo, int uBank, Pointer<Uint16> pwpa, int fuCache) → int

Requests that an internal MIDI synthesizer device preload and cache a specified set of patches.

midiOutClose(HMIDIOUT hmo) → int

Closes the specified MIDI output device.

midiOutGetDevCaps(int uDeviceID, Pointer<MIDIOUTCAPS> pmoc, int cbmoc) → int

Queries a specified MIDI output device to determine its capabilities.

midiOutGetErrorText(int mmrError, PWSTR pszText, int cchText) → int

Retrieves a textual description for an error identified by the specified error code.

midiOutGetID(HMIDIOUT hmo, Pointer<Uint32> puDeviceID) → int

Retrieves the device identifier for the given MIDI output device.

midiOutGetNumDevs() → int

Retrieves the number of MIDI output devices present in the system.

midiOutGetVolume(HMIDIOUT? hmo, Pointer<Uint32> pdwVolume) → int

Retrieves the current volume setting of a MIDI output device.

midiOutLongMsg(HMIDIOUT hmo, Pointer<MIDIHDR> pmh, int cbmh) → int

Sends a system-exclusive MIDI message to the specified MIDI output device.

midiOutMessage(HMIDIOUT? hmo, int uMsg, int? dw1, int? dw2) → int

Sends a message to the MIDI device drivers.

midiOutOpen(Pointer<Pointer<NativeType>> phmo, int uDeviceID, int? dwCallback, int? dwInstance, MIDI_WAVE_OPEN_TYPE fdwOpen) → int

Opens a MIDI output device for playback.

midiOutPrepareHeader(HMIDIOUT hmo, Pointer<MIDIHDR> pmh, int cbmh) → int

Prepares a MIDI system-exclusive or stream buffer for output.

midiOutReset(HMIDIOUT hmo) → int

Turns off all notes on all MIDI channels for the specified MIDI output device.

midiOutSetVolume(HMIDIOUT? hmo, int dwVolume) → int

Sets the volume of a MIDI output device.

midiOutShortMsg(HMIDIOUT hmo, int dwMsg) → int

Sends a short MIDI message to the specified MIDI output device.

midiOutUnprepareHeader(HMIDIOUT hmo, Pointer<MIDIHDR> pmh, int cbmh) → int

Cleans up the preparation performed by the midiOutPrepareHeader function.

PlaySound(PCWSTR? pszSound, HMODULE? hmod, SND_FLAGS fdwSound) → bool

Plays a sound specified by the given file name, resource, or system event.

timeGetTime() → int

Retrieves the system time, in milliseconds.

waveInAddBuffer(HWAVEIN hwi, Pointer<WAVEHDR> pwh, int cbwh) → int

Sends an input buffer to the given waveform-audio input device.

waveInClose(HWAVEIN hwi) → int

Closes the given waveform-audio input device.

waveInGetDevCaps(int uDeviceID, Pointer<WAVEINCAPS> pwic, int cbwic) → int

Retrieves the capabilities of a given waveform-audio input device.

waveInGetErrorText(int mmrError, PWSTR pszText, int cchText) → int

Retrieves a textual description of the error identified by the given error number.

waveInGetID(HWAVEIN hwi, Pointer<Uint32> puDeviceID) → int

Gets the device identifier for the given waveform-audio input device.

waveInGetNumDevs() → int

Returns the number of waveform-audio input devices present in the system.

waveInGetPosition(HWAVEIN hwi, Pointer<MMTIME> pmmt, int cbmmt) → int

Retrieves the current input position of the given waveform-audio input device.

waveInMessage(HWAVEIN? hwi, int uMsg, int? dw1, int? dw2) → int

Sends messages to the waveform-audio input device drivers.

waveInOpen(Pointer<Pointer<NativeType>>? phwi, int uDeviceID, Pointer<WAVEFORMATEX> pwfx, int? dwCallback, int? dwInstance, MIDI_WAVE_OPEN_TYPE fdwOpen) → int

Opens the given waveform-audio input device for recording.

waveInPrepareHeader(HWAVEIN hwi, Pointer<WAVEHDR> pwh, int cbwh) → int

Prepares a buffer for waveform-audio input.

waveInReset(HWAVEIN hwi) → int

Stops input on the given waveform-audio input device and resets the current position to zero.

waveInStart(HWAVEIN hwi) → int

Starts input on the given waveform-audio input device.

waveInStop(HWAVEIN hwi) → int

Stops waveform-audio input.

waveInUnprepareHeader(HWAVEIN hwi, Pointer<WAVEHDR> pwh, int cbwh) → int

Cleans up the preparation performed by the waveInPrepareHeader function.

waveOutClose(HWAVEOUT hwo) → int

Closes the given waveform-audio output device.

waveOutGetDevCaps(int uDeviceID, Pointer<WAVEOUTCAPS> pwoc, int cbwoc) → int

Retrieves the capabilities of a given waveform-audio output device.

waveOutGetErrorText(int mmrError, PWSTR pszText, int cchText) → int

Retrieves a textual description of the error identified by the given error number.

waveOutGetID(HWAVEOUT hwo, Pointer<Uint32> puDeviceID) → int

Retrieves the device identifier for the given waveform-audio output device.

waveOutGetNumDevs() → int

Retrieves the number of waveform-audio output devices present in the system.

waveOutGetPitch(HWAVEOUT hwo, Pointer<Uint32> pdwPitch) → int

Retrieves the current pitch setting for the specified waveform-audio output device.

waveOutGetPlaybackRate(HWAVEOUT hwo, Pointer<Uint32> pdwRate) → int

Retrieves the current playback rate for the specified waveform-audio output device.

waveOutGetPosition(HWAVEOUT hwo, Pointer<MMTIME> pmmt, int cbmmt) → int

Retrieves the current playback position of the given waveform-audio output device.

waveOutGetVolume(HWAVEOUT? hwo, Pointer<Uint32> pdwVolume) → int

Retrieves the current volume level of the specified waveform-audio output device.

waveOutMessage(HWAVEOUT? hwo, int uMsg, int dw1, int dw2) → int

Sends messages to the waveform-audio output device drivers.

waveOutOpen(Pointer<Pointer<NativeType>>? phwo, int uDeviceID, Pointer<WAVEFORMATEX> pwfx, int? dwCallback, int? dwInstance, MIDI_WAVE_OPEN_TYPE fdwOpen) → int

Opens the given waveform-audio output device for playback.

waveOutPause(HWAVEOUT hwo) → int

Pauses playback on the given waveform-audio output device.

waveOutPrepareHeader(HWAVEOUT hwo, Pointer<WAVEHDR> pwh, int cbwh) → int

Prepares a waveform-audio data block for playback.

waveOutReset(HWAVEOUT hwo) → int

Stops playback on the given waveform-audio output device and resets the current position to zero.

waveOutRestart(HWAVEOUT hwo) → int

Resumes playback on a paused waveform-audio output device.

waveOutSetPitch(HWAVEOUT hwo, int dwPitch) → int

Sets the pitch for the specified waveform-audio output device.

waveOutSetPlaybackRate(HWAVEOUT hwo, int dwRate) → int

Sets the playback rate for the specified waveform-audio output device.

waveOutSetVolume(HWAVEOUT? hwo, int dwVolume) → int

Sets the volume level of the specified waveform-audio output device.

waveOutUnprepareHeader(HWAVEOUT hwo, Pointer<WAVEHDR> pwh, int cbwh) → int

Cleans up the preparation performed by the waveOutPrepareHeader function.

waveOutWrite(HWAVEOUT hwo, Pointer<WAVEHDR> pwh, int cbwh) → int

Sends a data block to the given waveform-audio output device.