Tk_InitStubs(3tk) Tk Library Procedures Tk_InitStubs(3tk)
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NAME
Tk_InitStubs - initialize the Tk stubs mechanism
SYNOPSIS
#include <tk.h>
const char *
Tk_InitStubs(interp, version, exact)
ARGUMENTS
Tcl_Interp *interp (in) Tcl interpreter handle.
char *version (in) A version string consisting of one or
more decimal numbers separated by
dots.
int exact (in) Non-zero means that only the particu-
lar Tk version specified by version is
acceptable. Zero means that versions
newer than version are also acceptable
as long as they have the same major
version number as version.
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INTRODUCTION
The Tcl stubs mechanism defines a way to dynamically bind extensions to
a particular Tcl implementation at run time. the stubs mechanism re-
quires no changes to applications incorporating Tcl/Tk interpreters.
Only developers creating C-based Tcl/Tk extensions need to take steps
to use the stubs mechanism with their extensions. See the Tcl_Init-
Stubs page for more information.
Enabling the stubs mechanism for a Tcl/Tk extension requires the fol-
lowing steps:
1) Call Tcl_InitStubs in the extension before calling any other Tcl
functions.
2) Call Tk_InitStubs if the extension before calling any other Tk
functions.
2) Define the USE_TCL_STUBS and the USE_TK_STUBS symbols. Typically,
you would include the -DUSE_TCL_STUBS and the -DUSE_TK_STUBS flags
when compiling the extension.
3) Link the extension with the Tcl and Tk stubs libraries instead of
the standard Tcl and Tk libraries. On Unix platforms, the library
names are libtclstub8.4.a and libtkstub8.4.a; on Windows plat-
forms, the library names are tclstub84.lib and tkstub84.lib. Ad-
just the library names with appropriate version number but note
that the extension may only be used with versions of Tcl/Tk that
have that version number or higher.
DESCRIPTION
Tk_InitStubs attempts to initialize the Tk stub table pointers and en-
sure that the correct version of Tk is loaded. In addition to an in-
terpreter handle, it accepts as arguments a version number and a Bool-
ean flag indicating whether the extension requires an exact version
match or not. If exact is 0, then the extension is indicating that
newer versions of Tk are acceptable as long as they have the same major
version number as version; non-zero means that only the specified ver-
sion is acceptable. Tcl_InitStubs returns a string containing the ac-
tual version of Tk satisfying the request, or NULL if the Tk version is
not acceptable, does not support the stubs mechanism, or any other er-
ror condition occurred.
SEE ALSO
Tcl_InitStubs
KEYWORDS
stubs
Tk 8.4 Tk_InitStubs(3tk)
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