winmm topic

Windows Multimedia API

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

Functions

mciGetDeviceID(Pointer<Utf16> pszDevice) → int

The mciGetDeviceID function retrieves the device identifier corresponding to the name of an open device.

mciGetDeviceIDFromElementID(int dwElementID, Pointer<Utf16> lpstrType) → int

The mciGetDeviceIDFromElementID function retrieves the MCI device identifier corresponding to an element identifier.

mciGetErrorString(int mcierr, Pointer<Utf16> pszText, int cchText) → int

The mciGetErrorString function retrieves a string that describes the specified MCI error code.

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

The mciSendCommand function sends a command message to the specified MCI device.

mciSendString(Pointer<Utf16> lpstrCommand, Pointer<Utf16> lpstrReturnString, int uReturnLength, int hwndCallback) → int

The mciSendString function sends a command string to an MCI device. The device that the command is sent to is specified in the command string.

midiConnect(int hmi, int hmo, Pointer<NativeType> pReserved) → int

The midiConnect function connects a MIDI input device to a MIDI thru or output device, or connects a MIDI thru device to a MIDI output device.

midiDisconnect(int hmi, int hmo, Pointer<NativeType> pReserved) → int

The midiDisconnect function disconnects a MIDI input device from a MIDI thru or output device, or disconnects a MIDI thru device from a MIDI output device.

midiInClose(int hmi) → int

The midiInClose function closes the specified MIDI input device.

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

The midiInGetDevCaps function determines the capabilities of a specified MIDI input device.

midiInGetErrorText(int mmrError, Pointer<Utf16> pszText, int cchText) → int

The midiInGetErrorText function retrieves a textual description for an error identified by the specified error code.

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

The midiInGetID function gets the device identifier for the given MIDI input device.

midiInGetNumDevs() → int

The midiInGetNumDevs function retrieves the number of MIDI input devices in the system.

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

The midiInMessage function sends a message to the MIDI device driver.

midiInOpen(Pointer<IntPtr> phmi, int uDeviceID, int dwCallback, int dwInstance, int fdwOpen) → int

The midiInOpen function opens a specified MIDI input device.

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

The midiInPrepareHeader function prepares a buffer for MIDI input.

midiInReset(int hmi) → int

The midiInReset function stops input on a given MIDI input device.

midiInStart(int hmi) → int

The midiInStart function starts MIDI input on the specified MIDI input device.

midiInStop(int hmi) → int

The midiInStop function stops MIDI input on the specified MIDI input device.

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

The midiInUnprepareHeader function cleans up the preparation performed by the midiInPrepareHeader function.

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

The midiOutCacheDrumPatches function requests that an internal MIDI synthesizer device preload and cache a specified set of key-based percussion patches.

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

The midiOutCachePatches function requests that an internal MIDI synthesizer device preload and cache a specified set of patches.

midiOutClose(int hmo) → int

The midiOutClose function closes the specified MIDI output device.

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

The midiOutGetDevCaps function queries a specified MIDI output device to determine its capabilities.

midiOutGetErrorText(int mmrError, Pointer<Utf16> pszText, int cchText) → int

The midiOutGetErrorText function retrieves a textual description for an error identified by the specified error code.

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

The midiOutGetID function retrieves the device identifier for the given MIDI output device.

midiOutGetNumDevs() → int

The midiOutGetNumDevs function retrieves the number of MIDI output devices present in the system.

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

The midiOutGetVolume function retrieves the current volume setting of a MIDI output device.

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

The midiOutLongMsg function sends a system-exclusive MIDI message to the specified MIDI output device.

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

The midiOutMessage function sends a message to the MIDI device drivers. This function is used only for driver-specific messages that are not supported by the MIDI API.

midiOutOpen(Pointer<IntPtr> phmo, int uDeviceID, int dwCallback, int dwInstance, int fdwOpen) → int

The midiOutOpen function opens a MIDI output device for playback.

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

The midiOutPrepareHeader function prepares a MIDI system-exclusive or stream buffer for output.

midiOutReset(int hmo) → int

The midiOutReset function turns off all notes on all MIDI channels for the specified MIDI output device.

midiOutSetVolume(int hmo, int dwVolume) → int

The midiOutSetVolume function sets the volume of a MIDI output device.

midiOutShortMsg(int hmo, int dwMsg) → int

The midiOutShortMsg function sends a short MIDI message to the specified MIDI output device.

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

The midiOutUnprepareHeader function cleans up the preparation performed by the midiOutPrepareHeader function.

PlaySound(Pointer<Utf16> pszSound, int hmod, int fdwSound) → int

The PlaySound function plays a sound specified by the given file name, resource, or system event.

waveOutClose(int hwo) → int

The waveOutClose function closes the given waveform-audio output device.

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

The waveOutGetDevCaps function retrieves the capabilities of a given waveform-audio output device.

waveOutGetErrorText(int mmrError, Pointer<Utf16> pszText, int cchText) → int

The waveOutGetErrorText function retrieves a textual description of the error identified by the given error number.

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

The waveOutGetID function retrieves the device identifier for the given waveform-audio output device.

waveOutGetNumDevs() → int

The waveOutGetNumDevs function retrieves the number of waveform-audio output devices present in the system.

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

The waveOutGetPitch function retrieves the current pitch setting for the specified waveform-audio output device.

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

The waveOutGetPlaybackRate function retrieves the current playback rate for the specified waveform-audio output device.

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

The waveOutGetPosition function retrieves the current playback position of the given waveform-audio output device.

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

The waveOutGetVolume function retrieves the current volume level of the specified waveform-audio output device.

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

The waveOutMessage function sends messages to the waveform-audio output device drivers.

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

The waveOutOpen function opens the given waveform-audio output device for playback.

waveOutPause(int hwo) → int

The waveOutPause function pauses playback on the given waveform-audio output device. The current position is saved. Use the waveOutRestart function to resume playback from the current position.

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

The waveOutPrepareHeader function prepares a waveform-audio data block for playback.

waveOutReset(int hwo) → int

The waveOutReset function stops playback on the given waveform-audio output device and resets the current position to zero. All pending playback buffers are marked as done (WHDR_DONE) and returned to the application.

waveOutRestart(int hwo) → int

The waveOutRestart function resumes playback on a paused waveform-audio output device.

waveOutSetPitch(int hwo, int dwPitch) → int

The waveOutSetPitch function sets the pitch for the specified waveform-audio output device.

waveOutSetPlaybackRate(int hwo, int dwRate) → int

The waveOutSetPlaybackRate function sets the playback rate for the specified waveform-audio output device.

waveOutSetVolume(int hwo, int dwVolume) → int

The waveOutSetVolume function sets the volume level of the specified waveform-audio output device.

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

The waveOutUnprepareHeader function cleans up the preparation performed by the waveOutPrepareHeader function. This function must be called after the device driver is finished with a data block. You must call this function before freeing the buffer.

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

The waveOutWrite function sends a data block to the given waveform-audio output device.