CentOS 7.0 - man page for tk_initstubs (centos section 3)
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Tk_InitStubs(3) Tk Library Procedures Tk_InitStubs(3)
Tk_InitStubs - initialize the Tk stubs mechanism
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 num-
bers separated by dots.
int exact (in) Non-zero means that only the particular Tk version speci-
fied 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 inco-
porating 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:
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 symbol. Typically, you would include the -DUSE_TCL_STUBS
flag 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 platforms, the library names are tclstub84.lib and
tkstub84.lib (adjust names with appropriate version number).
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 ver-
sion 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 con-
taining 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.
Tk 8.4 Tk_InitStubs(3)
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