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/*!
\page SendingMIDI Sending MIDI events
Once the synthesizer is up and running and a SoundFont is loaded, most people
will want to do something useful with it. Make noise, for example. MIDI
messages can be sent using the fluid_synth_noteon(), fluid_synth_noteoff(),
fluid_synth_cc(), fluid_synth_pitch_bend(), fluid_synth_pitch_wheel_sens(),
and fluid_synth_program_change() functions. For convenience, there's also a
fluid_synth_bank_select() function (the bank select message is normally sent
using a control change message).
The following example show a generic graphical button that plays a note when
clicked:
\code
class SoundButton : public SomeButton
{
public:
SoundButton() : SomeButton() {
if (!_synth) {
initSynth();
}
}
static void initSynth() {
_settings = new_fluid_settings();
_synth = new_fluid_synth(_settings);
_adriver = new_fluid_audio_driver(_settings, _synth);
}
/* ... */
virtual int handleMouseDown(int x, int y) {
/* Play a note on key 60 with velocity 100 on MIDI channel 0 */
fluid_synth_noteon(_synth, 0, 60, 100);
}
virtual int handleMouseUp(int x, int y) {
/* Release the note on key 60 */
fluid_synth_noteoff(_synth, 0, 60);
}
protected:
static fluid_settings_t* _settings;
static fluid_synth_t* _synth;
static fluid_audio_driver_t* _adriver;
};
\endcode
*/
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