TIP #254: New Types for Tcl_LinkVar

Title:New Types for Tcl_LinkVar
Version:$Revision: 1.6 $
Author:Rene Meyer <rene dot meyer at sturmit dot de>
Created:Thursday, 21 July 2005


Currently only a limited set of types of C variable may be linked to using Tcl_LinkVar. This TIP proposes extending this to cover all the basic numeric C types.


With the current implementation it is not possible to link the following types directly to a Tcl variable, making it much more difficult to couple such variables to the Tcl level (compared with int or double variables). This TIP fixes this, making it easier to link C variables and embedded Tcl code.

There will be no impact on current applications.


The new types are inserted as new #define TCL_LINK_* statements in the tcl.h header file and in the switch statements in the Tcl_Link functions.

The documentation of Tcl_*Link* should mention the new types.

Reference Implementation

A reference implementation is available as Patch #1242844 on SourceForge[1].


This document has been placed in the public domain.

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