CODEWITHSUNDEEP
windowsdlltcl
Remo.D
Remo.D

Reputation: 16512

Calling a DLL function from tcl via twapi

I have a TCL application that is intented to run on Windows only and uses twapi to access some Windows-specific functions.

Now I need to call some C function that are in a custom DLL.

I know I can load the DLL with twapi::load_library (should be the same as LoadLibraryEx()) but I can't understand how to call a function within the DLL itself!

What did I miss?

I would prefer to avoid other dependencies (like critcl, for example) and to avoid to have to transform the current dll in a tcl extension (e.g. via SWIG) so a twapi only solution would be really helpful!

Upvotes: 1

Views: 1503

Answers (3)

APN
APN

Reputation: 11

twapi's load_library command is there for manipulating the resources in a dll (string tables, icon etc.). It's not intended for calling functions in the dll since that, as Donal points out, requires marshalling and some code generation.

Upvotes: 1

Donal Fellows
Donal Fellows

Reputation: 137567

TWAPI doesn't seem to provide any public binding of GetProcAddress (the Windows API function for getting from the name to the address of a function in a DLL).

Use ffidl for simple APIs (i.e., where there are no callbacks) or critcl (for all kinds of APIs, including those with callbacks, because it can do much more extensive code generation; more effort to use though).

Upvotes: 2

kostix
kostix

Reputation: 55453

Looks like you'll have to use ffidl to do the job.

Upvotes: 0

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