DOKK / manpages / debian 11 / tk8.6-doc / Tk_GetCapStyle.3tk.en
Tk_GetCapStyle(3tk) Tk Library Procedures Tk_GetCapStyle(3tk) 







Tk_GetCapStyle, Tk_NameOfCapStyle - translate between strings and
    cap styles








#include <tk.h>

int
Tk_GetCapStyle(interp, string, capPtr)

const char *
Tk_NameOfCapStyle(cap)









  
Tcl_Interp *interp (in)

  
Interpreter to use for error reporting.

  
const char *string (in)

  
String containing name of cap style - one of “butt”,
      “projecting”, or “round” - or a
      unique abbreviation of one.

  
int *capPtr (out)

  
Pointer to location in which to store X cap style corresponding to
      string.

  
int cap (in)

  
Cap style: one of CapButt, CapProjecting, or
      CapRound.
    
    

    

  










Tk_GetCapStyle places in *capPtr the X cap style
    corresponding to string. This will be one of the values
    CapButt, CapProjecting, or CapRound. Cap styles are
    typically used in X graphics contexts to indicate how the end-points of
    lines should be capped. 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 cap style
    or an abbreviation of one of these names, then an error message is stored in
    interpreter interp's result, TCL_ERROR is returned, and
    *capPtr is unmodified.


Tk_NameOfCapStyle is the logical inverse of
    Tk_GetCapStyle. Given a cap style such as CapButt it returns a
    statically-allocated string corresponding to cap. If cap is
    not a legal cap style, then “unknown cap style” is
  returned.








butt, cap style, projecting, round







  

    
    Tk