<p>Drumstick 是一个ALSA的音序器 （MIDI 接口）的C++封装库</p>    <p>示例代码：</p>    <pre class="brush:cpp; toolbar: true; auto-links: false;">#include <QApplication> #include <drumstick.h>  int main(int argc, char **argv) {     QApplication app(argc, argv, false);      // create a client object on the heap     drumstick::MidiClient *client = new drumstick::MidiClient;     client->open();     client->setClientName( "MyClient" );      // create the port     drumstick::MidiPort *port = client->createPort();     port->setPortName( "MyPort" );     port->setCapability( SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ );     port->setPortType( SND_SEQ_PORT_TYPE_MIDI_GENERIC );     // subscribe the port to some other client:port     port->subscribeTo( "20:0" ); // or "name:port", like in "KMidimon:0"      // create an event object on the stack, to send a note on message     drumstick::NoteOnEvent ev( 0, 66, 100 ); // (channel, note number, velocity)     ev.setSource( port->getPortId() );     ev.setSubscribers();   // deliver to all the connected ports     ev.setDirect();        // not scheduled, deliver immediately     client->output( &ev ); // or outputDirect() if you prefer not buffered     client->drainOutput(); // flush the buffer      // close and clean     client->close();     delete client;     return 0; }</pre>    <p><strong>项目主页：</strong><a href="http://www.open-open.com/lib/view/home/1326627919687" target="_blank">http://www.open-open.com/lib/view/home/1326627919687</a></p>    <p></p>