Library Procedures - Tk_GetJoinStyle manual page

Tcl/Tk Documentation > TkLib > GetJoinStl

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Tk_GetJoinStyle, Tk_NameOfJoinStyle - translate between strings and join styles


#include <tk.h>
Tk_GetJoinStyle(interp, string, joinPtr)
const char *


Tcl_Interp *interp (in)
Interpreter to use for error reporting.
const char *string (in)
String containing name of join style: one of “bevel”, “miter”, or “round”.
int *joinPtr (out)
Pointer to location in which to store X join style corresponding to string.
int join (in)
Join style: one of JoinBevel, JoinMiter, JoinRound.


Tk_GetJoinStyle places in *joinPtr the X join style corresponding to string, which will be one of JoinBevel, JoinMiter, or JoinRound. Join styles are typically used in X graphics contexts to indicate how adjacent line segments should be joined together. See the X documentation for information on what each style implies.

Under normal circumstances the return value is TCL_OK and interp is unused. If string does not contain a valid join style or an abbreviation of one of these names, then an error message is stored in interp->result, TCL_ERROR is returned, and *joinPtr is unmodified.

Tk_NameOfJoinStyle is the logical inverse of Tk_GetJoinStyle. Given a join style such as JoinBevel it returns a statically-allocated string corresponding to join. If join is not a legal join style, then “unknown join style” is returned.


bevel, join style, miter, round
Copyright © 1995-1997 Roger E. Critchlow Jr. Copyright © 1990 The Regents of the University of California. Copyright © 1994-1996 Sun Microsystems, Inc.