Can anybody think of any reason why building with Wails would interfere with go-ole (ie windows COM)?

[campbellwmorgan]

Background

I've recently added some code that uses the go-ole library to make some windows COM calls.

When I build my project just from the go build function without the flags desktop,production or without dev my calls work fine (via a cli command). They also work fine when the GUI is running.

However, when I build with wails using the new -windowsconsole flag (yes thank you for adding that!!) the initialization of my ole interface fails with InvalidFunction. (Specifically i call https://github.com/go-ole/go-ole/blob/bac9a21098b9908a7260c558a678008c6e4fead4/com.go#L80)

Interestingly the failure only occurs when executing the executable from the command line. If called via the GUI, it works fine

Question

Does Wails internally use the windows COM interface for something? Does it hook into any windows interfaces that may be overwriting a reference to something?

[campbellwmorgan]

Just to reply to my own comment. I realise this must be because wails also uses go-ole which would make sense (here

wails/v2/internal/go-common-file-dialog/cfd/CommonFileDialog_windows.go

Line 10 in 6a07cbd

_ = ole.CoInitializeEx(0, ole.COINIT_APARTMENTTHREADED|ole.COINIT_DISABLE_OLE1DDE)

)

And i've resolved my issue by just ignoring the error as has been done in wails. So far everything seems to work fine :)

[leaanthony]

Thanks for coming back with that and I'm pleased you got it fixed. This sounds like it would be a great addition to our Troubleshooting guide. Would you consider adding a section in that? All you'd need to do is follow this link and start typing 👍 https://github.com/wailsapp/wails/edit/master/website/docs/guides/troubleshooting.mdx

[campbellwmorgan]

Sure! Will do it later in the week