No way to change dwClsContext parameter to CoCreateInstance

[johnmave126]

I got 0x8004_0154 (Class not registered) when trying to create an instance of DesktopWallpaper with CLSID C2CF3110-460E-4FC1-B9D0-8A1C0C9CC4BD, where the interface is IDesktopWallpaper (https://docs.microsoft.com/en-us/windows/win32/api/shobjidl_core/nn-shobjidl_core-idesktopwallpaper).
Upon experimenting in C++, I found that creating such instance requires dwClsContext of CLSCTX_LOCAL_SERVER instead of CLSCTX_INPROC_SERVER. I am wondering whether it is possible to customize how we want to create an instance, or can we use CLSCTX_ALL for better compatibility.

Relevant code:
https://github.com/microsoft/com-rs/blob/master/src/runtime.rs#L124-L138

[rylev]

I'm not sure yet how I want to solve this. I've gone back and forth on how much utility to provide for instantiating the COM runtime with this crate. For now, the way to solve this is to call CoCreateInstance yourself. At some point, we'll need to revisit the runtime module and make it more flexible.