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113 lines (99 loc) · 3.45 KB
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// Copyright (c) Richasy. All rights reserved.
using System;
using System.Linq;
using System.Runtime.InteropServices;
using System.Threading;
using System.Threading.Tasks;
using CleanReader.ViewModels.Desktop;
using Microsoft.UI.Dispatching;
using Microsoft.Windows.AppLifecycle;
using Windows.ApplicationModel.Activation;
using Windows.Storage;
namespace CleanReader.App;
/// <summary>
/// 应用入口点.
/// </summary>
internal class Program
{
private static IntPtr redirectEventHandle = IntPtr.Zero;
/// <summary>
/// 介入应用启动过程，在有多实例请求时重定向到已激活实例.
/// </summary>
/// <param name="args">启动参数.</param>
[STAThread]
internal static void Main(string[] args)
{
WinRT.ComWrappersSupport.InitializeComWrappers();
var isRedirect = DecideRedirection();
if (!isRedirect)
{
Microsoft.UI.Xaml.Application.Start((p) =>
{
var context = new DispatcherQueueSynchronizationContext(DispatcherQueue.GetForCurrentThread());
SynchronizationContext.SetSynchronizationContext(context);
_ = new App();
});
}
}
private static bool DecideRedirection()
{
var isRedirect = false;
var args = AppInstance.GetCurrent().GetActivatedEventArgs();
try
{
var keyInstance = AppInstance.FindOrRegisterForKey("CleanReader");
if (keyInstance.IsCurrent)
{
keyInstance.Activated += OnActivatedAsync;
}
else
{
isRedirect = true;
RedirectActivationTo(args, keyInstance);
}
}
catch (Exception)
{
isRedirect = true;
}
return isRedirect;
}
[DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
private static extern IntPtr CreateEvent(IntPtr lpEventAttributes, bool bManualReset, bool bInitialState, string lpName);
[DllImport("kernel32.dll")]
private static extern bool SetEvent(IntPtr hEvent);
[DllImport("ole32.dll")]
private static extern uint CoWaitForMultipleObjects(uint dwFlags, uint dwMilliseconds, ulong nHandles, IntPtr[] pHandles, out uint dwIndex);
// Do the redirection on another thread, and use a non-blocking
// wait method to wait for the redirection to complete.
private static void RedirectActivationTo(AppActivationArguments args, AppInstance keyInstance)
{
redirectEventHandle = CreateEvent(IntPtr.Zero, true, false, null);
Task.Run(async () =>
{
await keyInstance.RedirectActivationToAsync(args);
SetEvent(redirectEventHandle);
});
uint cWMO_DEFAULT = 0;
var iNFINITE = 0xFFFFFFFF;
_ = CoWaitForMultipleObjects(
cWMO_DEFAULT,
iNFINITE,
1,
new IntPtr[] { redirectEventHandle },
out var handleIndex);
}
private static async void OnActivatedAsync(object sender, AppActivationArguments args)
{
if (args.Kind == ExtendedActivationKind.File)
{
var fileArgs = args.Data as FileActivatedEventArgs;
var file = fileArgs.Files.FirstOrDefault();
if (file is StorageFile f)
{
AppViewModel.Instance.InitializeFilePath = f.Path;
await LibraryViewModel.Instance.CheckOpenFileOrImportAsync();
}
}
}
}