- NAME
- Tk_InitStubs — initialize the Tk stubs mechanism
- SYNOPSIS
- #include <tk.h>
- const char *
- Tk_InitStubs(interp, version, exact)
- ARGUMENTS
- INTRODUCTION
- DESCRIPTION
- SEE ALSO
- KEYWORDS
Tk_InitStubs — initialize the Tk stubs mechanism
#include <tk.h>
const char *
Tk_InitStubs(interp, version, exact)
- 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 particular 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.
The Tcl stubs mechanism defines a way to dynamically bind
extensions to a particular Tcl implementation at run time.
the stubs mechanism requires 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_InitStubs page for more information.
Enabling the stubs mechanism for a Tcl/Tk extension requires the following
steps:
-
Call Tcl_InitStubs in the extension before calling any other
Tcl functions.
-
Call Tk_InitStubs if the extension before calling any other
Tk functions.
-
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.
-
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
platforms, the library names are tclstub84.lib and
tkstub84.lib. Adjust 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.
Tk_InitStubs attempts to initialize the Tk stub table pointers
and ensure that the correct version of Tk is loaded. In addition
to an interpreter handle, it accepts as arguments a version number
and a Boolean 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 version is acceptable.
Tcl_InitStubs returns a string containing the actual version
of Tk satisfying the request, or NULL if the Tk version is not
acceptable, does not support the stubs mechanism, or any other
error condition occurred.
Tcl_InitStubs
stubs
Copyright © 1999 Scriptics Corporation