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2026-10-02 06:22:54 +00:00

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using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.InteropServices.ComTypes;
using System.Text;
namespace AeroMCSetup;
/// <summary>
/// Verknüpfungen (.lnk) über die Shell-Schnittstellen – inklusive AppUserModelID, damit
/// Taskleiste und Windows-Benachrichtigungen AeroMC wie bisher zuordnen (wie beim alten NSIS-Setup).
/// </summary>
public static class Shortcut
{
public static void Create(string link, string target, string description, string appUserModelId)
{
Directory.CreateDirectory(Path.GetDirectoryName(link)!);
var shellLink = (IShellLinkW)new CShellLink();
try
{
shellLink.SetPath(target);
shellLink.SetWorkingDirectory(Path.GetDirectoryName(target)!);
shellLink.SetIconLocation(target, 0);
shellLink.SetDescription(description);
var store = (IPropertyStore)shellLink;
var key = new PropertyKey(new Guid("9F4C2855-9F79-4B39-A8D0-E1D42DE1D5F3"), 5); // PKEY_AppUserModel_ID
var value = new PropVariant { vt = 31 /* VT_LPWSTR */, p = Marshal.StringToCoTaskMemUni(appUserModelId) };
try
{
store.SetValue(ref key, ref value);
store.Commit();
}
finally { Marshal.FreeCoTaskMem(value.p); }
((IPersistFile)shellLink).Save(link, true);
}
finally { Marshal.ReleaseComObject(shellLink); }
}
/// <summary>Ziel einer vorhandenen Verknüpfung, oder null.</summary>
public static string? Target(string link)
{
if (!File.Exists(link)) return null;
var shellLink = (IShellLinkW)new CShellLink();
try
{
((IPersistFile)shellLink).Load(link, 0);
var sb = new StringBuilder(1024);
shellLink.GetPath(sb, sb.Capacity, IntPtr.Zero, 0);
return sb.ToString();
}
catch { return null; }
finally { Marshal.ReleaseComObject(shellLink); }
}
// ---------- COM ----------
[ComImport, Guid("00021401-0000-0000-C000-000000000046")]
private class CShellLink { }
[ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("000214F9-0000-0000-C000-000000000046")]
private interface IShellLinkW
{
void GetPath([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszFile, int cchMaxPath, IntPtr pfd, uint fFlags);
void GetIDList(out IntPtr ppidl);
void SetIDList(IntPtr pidl);
void GetDescription([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszName, int cchMaxName);
void SetDescription([MarshalAs(UnmanagedType.LPWStr)] string pszName);
void GetWorkingDirectory([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszDir, int cchMaxPath);
void SetWorkingDirectory([MarshalAs(UnmanagedType.LPWStr)] string pszDir);
void GetArguments([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszArgs, int cchMaxPath);
void SetArguments([MarshalAs(UnmanagedType.LPWStr)] string pszArgs);
void GetHotkey(out short pwHotkey);
void SetHotkey(short wHotkey);
void GetShowCmd(out int piShowCmd);
void SetShowCmd(int iShowCmd);
void GetIconLocation([Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszIconPath, int cchIconPath, out int piIcon);
void SetIconLocation([MarshalAs(UnmanagedType.LPWStr)] string pszIconPath, int iIcon);
void SetRelativePath([MarshalAs(UnmanagedType.LPWStr)] string pszPathRel, uint dwReserved);
void Resolve(IntPtr hwnd, uint fFlags);
void SetPath([MarshalAs(UnmanagedType.LPWStr)] string pszFile);
}
[ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99")]
private interface IPropertyStore
{
void GetCount(out uint cProps);
void GetAt(uint iProp, out PropertyKey pkey);
void GetValue(ref PropertyKey key, out PropVariant pv);
void SetValue(ref PropertyKey key, ref PropVariant pv);
void Commit();
}
[StructLayout(LayoutKind.Sequential, Pack = 4)]
private struct PropertyKey(Guid fmtid, uint pid)
{
public Guid fmtid = fmtid;
public uint pid = pid;
}
// PROPVARIANT: 16 Byte (32 Bit) bzw. 24 Byte (64 Bit)
[StructLayout(LayoutKind.Sequential)]
private struct PropVariant
{
public ushort vt;
public ushort r1, r2, r3;
public IntPtr p;
public IntPtr p2;
}
}