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CentOS 7.0 - man page for tk_initstubs (centos section 3)

Tk_InitStubs(3) 		      Tk Library Procedures			  Tk_InitStubs(3)

_________________________________________________________________________________________________

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 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.
_________________________________________________________________

INTRODUCTION
       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).

DESCRIPTION
       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.

SEE ALSO
       Tcl_InitStubs

KEYWORDS
       stubs

Tk					       8.4				  Tk_InitStubs(3)


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