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[英]Wcf basicHttpBinding not working in Windows 8.1 app store
[英]Working with MIDI in Windows Store App (Win 8.1)
我的目标是在Windows应用商店应用中接收MIDI消息。 Microsoft提供了一个名为Microsoft.WindowsPreview.MidiRT
的API(作为nuget包)。
我设法得到一个midi端口,但是没有出现MessageReceived
事件,虽然我按下我的MIDI键盘上的键,其他MIDI程序显示我收到这些消息。
这是我的代码:
public sealed partial class MainPage : Page
{
private MidiInPort port;
public MainPage()
{
this.InitializeComponent();
DeviceWatcher watcher = DeviceInformation.CreateWatcher();
watcher.Updated += watcher_Updated;
watcher.Start();
}
protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{
base.OnNavigatingFrom(e);
port.Dispose();
}
async void watcher_Updated(DeviceWatcher sender, DeviceInformationUpdate args)
{
DeviceInformationCollection deviceCollection = await DeviceInformation.FindAllAsync(MidiInPort.GetDeviceSelector());
foreach (var item in deviceCollection)
{
Debug.WriteLine(item.Name);
if (port == null)
{
port = await MidiInPort.FromIdAsync(item.Id);
port.MessageReceived += port_MessageReceived;
}
}
}
void port_MessageReceived(MidiInPort sender, MidiMessageReceivedEventArgs args)
{
Debug.WriteLine(args.Message.Type);
}
}
有任何想法吗?
可能相关:您的设备观察程序代码未遵循正常模式。 这是你需要做的:
DeviceWatcher midiWatcher;
void MonitorMidiChanges()
{
if (midiWatcher != null)
return;
var selector = MidiInPort.GetDeviceSelector();
midiWatcher = DeviceInformation.CreateWatcher(selector);
midiWatcher.Added += (s, a) => Debug.WriteLine("Midi Port named '{0}' with Id {1} was added", a.Name, a.Id);
midiWatcher.Updated += (s, a) => Debug.WriteLine("Midi Port with Id {1} was updated", a.Id);
midiWatcher.Removed += (s, a) => Debug.WriteLine("Midi Port with Id {1} was removed", a.Id);
midiWatcher.EnumerationCompleted += (s, a) => Debug.WriteLine("Initial enumeration complete; watching for changes...");
midiWatcher.Start();
}
我设法让它发挥作用。 我已经将平台改为x64,现在它可以工作(我曾经为x86构建它)。 虽然存在问题(它甚至更大):我想将它与Unity3d集成,但Unity3d不允许构建x64 windows应用程序,另一方面x86 MIDI构建在x64机器上不起作用。
添加:
虽然这个API取决于你的架构,但据报道新的Windows 10 api没有,所以如果你的目标是Win10,它应该更简单。
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