Tcl - Accessing Fields from a C Struct

Question

I'm trying to do some automation in OrCAD Capture using its Tcl scripting interface. I've run into a problem of receiving a struct, but not having any exposed functions to deal with it. I know the structure of the struct (it's a LOGFONT) so is there anyway to unpack the struct?

I've found SWIG that allows creating Tcl interfaces to C libraries. I'd really rather not have to ship C code just to access a simple struct though!

Answer 1

This is really the kind of thing you need to be asking your product vendor about. Searching doesn't turn up much useful information, although several posts on Cadence forums seem to indicate that the documentation you need is in a file named "OrCAD_Capture_TclTk_Extensions.pdf", (look in instdir/tools/capture/tclscripts/). Also, _60e6d70d_p_LOGFONT is an object handle. It looks like it's a command... So, set $logfont [command_that_returns_this_handle], and then $logfont will be the command to invoke object methods, which should be documented in "OrCAD_Capture_TclTk_Extensions.pdf".

_{This was the sense that I extracted from http://www.cadence.com/Community/forums/p/15614/1294051.aspx. See for yourself.}