juce::MidiDeviceListConnection Class Reference

To find out when the available MIDI devices change, call MidiDeviceListConnection::make(), passing a lambda that will be called on each configuration change. More...

#include "juce_MidiDevices.h"

Public Types
using	Key = uint64_t

Public Member Functions
	MidiDeviceListConnection ()=default
	Constructs an inactive connection.
	MidiDeviceListConnection (const MidiDeviceListConnection &)=delete
	MidiDeviceListConnection (MidiDeviceListConnection &&other) noexcept
MidiDeviceListConnection &	operator= (const MidiDeviceListConnection &)=delete
MidiDeviceListConnection &	operator= (MidiDeviceListConnection &&other) noexcept
void	reset () noexcept
	Clears this connection.

Static Public Member Functions
static MidiDeviceListConnection	make (std::function< void()>)
	Registers a function to be called whenever the midi device list changes.

Detailed Description

To find out when the available MIDI devices change, call MidiDeviceListConnection::make(), passing a lambda that will be called on each configuration change.

To stop the lambda receiving callbacks, destroy the MidiDeviceListConnection instance returned from make(), or call reset() on it.

// Start listening for configuration changes
auto connection = MidiDeviceListConnection::make ([]
{
    // This will print a message when devices are connected/disconnected
    DBG ("MIDI devices changed");
});
 
// Stop listening
connection.reset();

@tags{Audio}

Definition at line 49 of file juce_MidiDevices.h.

Member Typedef Documentation

Key

using juce::MidiDeviceListConnection::Key = uint64_t

Definition at line 52 of file juce_MidiDevices.h.

Constructor & Destructor Documentation

MidiDeviceListConnection()

juce::MidiDeviceListConnection::MidiDeviceListConnection ( MidiDeviceListConnection &&  other )

noexcept

Definition at line 59 of file juce_MidiDevices.h.

~MidiDeviceListConnection()

juce::MidiDeviceListConnection::~MidiDeviceListConnection ( )

noexcept

Definition at line 94 of file juce_MidiDevices.cpp.

Member Function Documentation

make()

MidiDeviceListConnection juce::MidiDeviceListConnection::make ( std::function< void()>  cb )

static

Registers a function to be called whenever the midi device list changes.

The callback will only be active for as long as the return MidiDeviceListConnection remains alive. To stop receiving device change notifications, destroy the Connection object, e.g. by allowing it to fall out of scope.

Definition at line 774 of file juce_Midi_linux.cpp.

operator=()

MidiDeviceListConnection & juce::MidiDeviceListConnection::operator= ( MidiDeviceListConnection &&  other )

noexcept

Definition at line 66 of file juce_MidiDevices.h.

reset()

void juce::MidiDeviceListConnection::reset ( )

noexcept

Clears this connection.

If this object had an active connection, that connection will be deactivated, and the corresponding callback will be removed from the MidiDeviceListConnectionBroadcaster.

Definition at line 79 of file juce_MidiDevices.h.

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The documentation for this class was generated from the following files:

• juce_audio_devices/midi_io/juce_MidiDevices.h
• juce_audio_devices/midi_io/juce_MidiDevices.cpp
• juce_audio_devices/native/juce_Midi_linux.cpp