The Win32 implementations of [Perl] and [Python] more-or-less build in
direct access to all of [Microsoft]'s Win32 API(s).  

[[more detail - what kind of interface is this?]]


[Tcl] does not, a crippling disadvantage in some contexts.

[[What is the proposed solution here then?]] 

However, Tcl has its own approaches, including [ffidl] ...





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The no-charge version of bcc55 [[...]]
includes a no-charge version of a reference
to the Win32 API
[[...]].

[PT] The entire Win32 API documentation is available from http://msdn.microsoft.com/library/

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The [TWAPI] project intends to remedy this by providing access to Win32 API's (NT based platforms, not Win98) not directly available from Tcl.