Author:         Rene Meyer <rene.meyer@sturmit.de>
State:          Final
Type:           Project
Vote:           Done
Created:        21-Jul-2005
Post-History:   
Tcl-Version:    8.5

Abstract

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.

Rationale

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.

• char

• unsigned char

• short

• unsigned short

• unsigned int

• long

• unsigned long

• Tcl_WideUInt

• float

There will be no impact on current applications.

Specification

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 SourceForgehttp://sf.net/support/tracker.php?aid=1242844 .

Copyright

This document has been placed in the public domain.