Flow.Launcher/Plugins/Flow.Launcher.Plugin.Program/Programs/ApplicationActivationHelper.cs

using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace Flow.Launcher.Plugin.Program.Programs
{
    public class ApplicationActivationHelper
    {
        // Reference : https://github.com/MicrosoftEdge/edge-launcher/blob/108e63df0b4cb5cd9d5e45aa7a264690851ec51d/MIcrosoftEdgeLauncherCsharp/Program.cs
        public enum ActivateOptions
        {
            None = 0x00000000,
            DesignMode = 0x00000001,
            NoErrorUI = 0x00000002,
            NoSplashScreen = 0x00000004,
        }

        /// ApplicationActivationManager
        [ComImport, Guid("2e941141-7f97-4756-ba1d-9decde894a3d"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
        interface IApplicationActivationManager
        {
            IntPtr ActivateApplication([In] string appUserModelId, [In] string arguments, [In] ActivateOptions options, [Out] out uint processId);
            IntPtr ActivateForFile([In] string appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] string verb, [Out] out uint processId);
            IntPtr ActivateForProtocol([In] string appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out uint processId);
        }

        // Application Activation Manager Class
        [ComImport, Guid("45BA127D-10A8-46EA-8AB7-56EA9078943C")]
        public class ApplicationActivationManager : IApplicationActivationManager
        {

            [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)/*, PreserveSig*/]
            public extern IntPtr ActivateApplication([In] string appUserModelId, [In] string arguments, [In] ActivateOptions options, [Out] out uint processId);

            [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
            public extern IntPtr ActivateForFile([In] string appUserModelId, [In] IntPtr /*IShellItemArray* */ itemArray, [In] string verb, [Out] out uint processId);

            [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]
            public extern IntPtr ActivateForProtocol([In] string appUserModelId, [In] IntPtr /* IShellItemArray* */itemArray, [Out] out uint processId);
        }
    }
}