Add support for running a service exe as a console app.

[Type1J]

Suggestion

All of the Windows services that I've ever written in C or C++ could be run as a console application for one reason or another.

The windows-services crate could easily allow this functionality, and already detects if the process was started as a console app:

windows-rs/crates/libs/services/src/lib.rs

Line 132 in 6437f5e

if unsafe { StartServiceCtrlDispatcherW(table.as_ptr()) } == 0 {

There's more than 1 way to add this feature, but I think that there is 1 way that breaks the least: Add a .allow_console() (or choose a better name) to Service that when called allows .run() to return if the check on the call to StartServiceCtrlDispatcherW() (linked above) sees that it was run on the console. If the .allow_console() function is never called, then keep the existing functionaility.

The state in Service is all private, so adding to it would only affect code in the same file, but a bit in the existing u32 could be used, if that's acceptable.

Please add this functionality, as I can't use it without this feature.

[kennykerr]

Thanks I've been meaning to add such an ability but I'd like to do it in such a way as to also address #3610 in so far as we can generally run the service outside of the SCM for both console and testing purposes. I'm hatching a plan to make that possible but I don't think #3646 quite meets all of those requirements.

[Type1J]

Ok, I'll look at #3610. I'll have to use this fix in my own projects, for now, and I'll leave this issue open, so that the fix for #3610 can close this one, as well.

[kennykerr]

Thanks, I think I'm closer to a fix now - should have a PR out in the next day or two.

[kennykerr]

Please take a look at #3662 and in particular the tests and samples and let me know if you have any comments. Thanks for the suggestion!