Generate Guid or Guid* static properties from ROS<byte>

[0x5bfa]

Background

I have been working with many COM interfaces and what I found it useful when the runtime marshaling is disabled is that CsWin32 generates Guid* too.

When I initialize a COM interface, I have to do:

IDesktopWallpaper* pDesktopWallpaper = default;
Guid CLSID_DesktopWallpaper = typeof(DesktopWallpaper).GUID;
Guid IID_IDesktopWallpaper = typeof(IDesktopWallpaper).GUID;
HRESULT hr = PInvoke.CoCreateInstance(
    &CLSID_DesktopWallpaper,
    null,
    CLSCTX.CLSCTX_INPROC_SERVER,
    &IID_IDesktopWallpaper,
    (void**)&pDesktopWallpaper);

Idea

There would be a few options to lower the lines of code:

• Generate every Guid, such as CLSID, IID, SID, PID and BHID from ROS and via MemoryMarshal.AsRef and also optionally generate Guid* as well as Guid for them above
• Expose Guid (alternatively Guid*) property (IComIID.Guid) placed in the COM interfaces and do the same in COM classes too. This looks like generated from ROS<byte> already tho. AFAIK this isn't exposed because I couldn't access from my code.

public static ref readonly Guid CLSID_DesktopWallpaper
    => ref MemoryMarshal.AsRef<Guid>([0x00000000, 0x00, ....]);

// Additionally (optional), you could create a new NativeMethods.json Boolean property for this or name this the similar way like below and create this:
public static ref readonly Guid* CLSID_DesktopWallpaper_AsPointer
    => (Guid*)Unsafe.AsPointer(ref Unsafe.AsRef(in CLSID_DesktopWallpaper));

References

• CsWin32/#752
• Terrafx.Interop.Windows Guids I desire

What do you think?